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$3.74 Shipping Condition: Neu Location: China 5: The range of the number of pulses: 0~999000; adjust by the encoder knob; when the number is set to zero; continuous output PWM. 8: Output PWM drive ... morecapability: the output is driven by high-power NPN type IRF3205; the maximum driving current can reach 10A without heat dissipation.
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$3.00 Shipping Condition: New Location: China Onboard NE555 IC. single channel signal output, the output duty cycle about 50% square wave. NOTE:Can not adjust duty ratio, can only adjust frequency. ... moreHowever, we will try our best to minimize it.
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Free Shipping Condition: New Location: Lewis, United States MOSFET IGBT Driver UCC27423 turns FET full on DIP8. INVERTING logic. DUAL 4 Amp Gate Driver for power MOSFETs and IGBT's. It will both source and sink ... morecurrent from MOSFET gates to provide fast switching.
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$3.00 Shipping Condition: New Location: China The main chip: NE555;. 1/2/5/10PCS X NE555 Duty Cycle and Frequency Adjustable Module Square Wave. -Low-frequency stall: 1Hz ~ 50Hz. -IF stall: 50Hz ~ ... more1kHz. -In the high-frequency stall: 1KHz ~ 10kHz.
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$3.75 Shipping Condition: Neu Location: China JDS2900 generator 1. Arbitrary waveforms can be drawn using the host computer software;. Burst function: 4 trigger modes, sine wave, square wave, sawtooth ... morewave, or arbitrary wave can be used to generate pulse train, the number of pulse period is continuously adjustable between O-1048575.
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$75.50 Shipping Condition: Used Location: Toledo, United States ebay template The Following Items Are Included: Acterna EDT-135 E1 and Data Tester(BC# 13139) w/ Options: BN4562/00.36: Extended PRBS Option BN4562/00.52: ... moreE1 Level Measurement Option 25 Pin to 25 Pin Interface Cable(2) BNC To BNC Cables Software Options Manual for EDT-135 Manual For EDT-135 AC Adapter/Charger Power Cord Acterna EDT Software Manager Carrying Case BE SURE TO CHECK OUR EBAY STORE FOR OTHER ITEMS! This Item Has A Current Calibration! Acterna EDT-135 E1 and Data Tester BN4562/34: E1& Data Tester Without X.50 Testing Interface Installed Options: BN4562/00.36 Extended PRBS Option BN4562/00.52 E1 Level Measurement Option This powerful tester includes a full set of measurements to install. Commission and troubleshoot E1 and data circuits, along with the services that run over them. Includes Carrying Case And Accessories As Listed Above! Working Condition: Excellent Condition: Refurbished Calibrated: Yes Warranty: 90 Day Exchange Warranty Acterna EDT-135 E1 and Data Tester BN4562/34: E1& Data Tester Without X.50 Testing Interface Applications Installing. Commissioning and maintaining E1 circuits and multiplexers Commissioning and maintainng datacom and V.24 modem circuits Commissioning Frame Relay services Installing and maintaining GSM circuits This powerful tester includes a full set of measurements to install. Commission and troubleshoot E1 and data circuits, along with the services that run over them. Installation tests require basic out-of-service Bit Error Rate(BER) testing to assess cabling integrity. Full commissioning requires extended BER testing to international standards. As well as stress testing and complete assessment of link performance with respect to error and alarm reporting. For successful maintenance. Rapid identification of the current line status is critical to the speedy resolution of problems. Specific services(such as Frame Relay and GSM) have their own testing requirements, and require a tailored solution to ensure satisfactory operation. Functions E1 and n x 64k BERT
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Free Shipping Condition: New Location: Lewis, United States MOSFET IGBT Driver UCC27423 turns FET full on DIP8. DUAL 4 Amp Gate Driver for power MOSFETs and IGBT's. It will both source and sink current from MOSFET ... moregates to provide fast switching. This test is easy for any engineer or technician.
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$2.83 Shipping Condition: New Location: China
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Free Shipping Condition: New Location: China The pressure loss is reduced and it is suitable for working situations where the gas source pressure is low. 1pc CE1-6-M-B05C-1-4-D pressure sensor. Electromagnetic ... morepulse valve (also known as diaphragm valve) is the compressed air "switch" of the dust cleaning and blowing system of the pulse bag type dust collector.
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Free Shipping Condition: New Location: China Play music on the device, and the music will be emitted from the arc. Step 4: Test the ion windmill, turn off the power switch and stop the Tesla coil. ... moreThen turn on the power switch and the Tesla coil works.
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Free Shipping Condition: New Location: United States USB to serial port chip model: CH340G. It has 14 digital input/output pins (6 of which can be used as PWM outputs), 6 analog inputs, 16MHz crystal clock, ... moreUSB connection, power socket, IIC, SPI interface, and reset button.
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$2.99 Shipping Condition: New Location: China The output of this module can be supplied to the driver as a pulse signal. When used with the driver, the common anode wiring is used. The related wiring ... moreis OC-OUT, which is connected to the driver's PUL- or PUL.
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$3.86 Shipping Condition: Neu Location: China GM328A transistor tester X1. Nano Sheild. Pulse signal generator, turn left or right test button to adjust the pulse duty cycle from 1% to 99%. Press ... moreand hold the test button to exit the pulse signal generator.
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Free Shipping Condition: New Location: China 1000W DC12V Inverter Module High Frequency Module Board Current Boost Step-up Car Converter DC-AC 4X7A. Power: 1000W. The product is widely used. It has ... morehigh energy efficiency, long life, low power consumption, convenient and safe use, energy saving and durable.
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Free Shipping Condition: New Location: China The silver-coated side of the ceramic plate of the transducer is a negative electrode, while the larger side of the other two silver layers is a positive ... moreelectrode, and the smaller side is a negative plate.
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$0.49 Shipping Condition: New Location: United States Step 4: Test the ion windmill, turn off the power switch and stop the Tesla coil. Then turn on the power switch and the Tesla coil works. The arc is ejected ... morefrom the two ends of the ion windmill fittings and starts to drive the windmill to rotate.
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Free Shipping Condition: Neu Location: China "Setpoint Output" can choose whether to save when power off (set by F0-8). -Newly added automatic operation function, one-button turn off output and other ... morefunctions. GND: power and signal ground. MIA: external button, increase signal.
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$3.99 Shipping Condition: New Location: Miami, United States Part Number: TL16C752BPT / TL16C752BPT. An internal loopback capability allows onboard diagnostics.The UART transmits data, sent to it over the peripheral ... more8-bit bus, on the TX signal and receives characters on the RX signal.
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$8.00 Shipping Condition: New Location: China Q1: What is GNSS?. What is GNSSDO?. Use GNSS timing to adjust clocks to make clocks more accurate. Q3: Where is the GNSSDO applied?. Without antenna, ... morethe GNSSDO is used as an OCXO with keeping performance.
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$3.00 Shipping Condition: New Location: China To clear the count number, just press and hold the encoder for 3 seconds. Current:40A / 100A (Optional). 40A/100A LED Single Pulse. 40A/100A LCD Double ... morePulse. Welding strength 30%-99% is adjustable.
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Free Shipping Condition: New Location: Fort Lauderdale, United States 1 x CD4046BE. Choice of two phase comparators: - Exclusive-OR network (I). Buy 3, Get 1 at 50% OFF. Buy 4, Get 1 at 70% OFF. 100% tested for quiescent ... morecurrent at 20 V. Friendly Note : Be mindful of the many, inexpensive, counterfeits available on the market.
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Free Shipping Condition: New Location: United States 103 Monolithic Capacitor X3. 30P Porcelain Chip Capacitor X2. The second signal generator consists of CD4060 and CD4013, which generates a square wave ... moresignal with a frequency of 1HZ. CD4060 is a 14-level binary frequency divider/oscillator.
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$3.20 Shipping Condition: New Location: China Working current: digital tube OFF (power saving state): relay OFF 6MA, relay ON 35MA. Digital tube ON (working state): relay OFF 29MA, relay ON 56MA. ... morePulse count value 0-9999 can be set. Output port: 10A relay NO COM NC three ports.
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$5.36 Shipping Condition: Neu Location: China DDS technology, FPGA design, ultra-low power consumption. - Basic function waveforms including sine wave, triangle wave, square wave, sawtooth wave, and ... morepulse wave with adjustable duty cycle. Automatically recall the data of M0 when it is powered on.
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Free Shipping Condition: New Location: China Number for. Specifications: Material:PCB.
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$3.20 Shipping Condition: New Location: China Working current: digital tube OFF (power saving state): relay OFF 6MA, relay ON 35MA. Digital tube ON (working state): relay OFF 29MA, relay ON 56MA. ... moreOutput port: 10A relay NO COM NC three ports. Pulse count value 0-9999 can be set.
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$5.36 Shipping Condition: Neu Location: China 3-Channel DDS Function Signal Arbitrary Waveform Generator 4-Channel TTL Signal Generator FY8300S-20M. Rich shortcut keys simplify complicated operation. ... moreEspecially suitable for electronic enthusiasts, scientific research institutions and high-tech enterprises, automotive repair and other fields.
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$40.00 Shipping Condition: New Location: Canada They can be used as both sound or PEMF ( pulsed electromagnetic fields - silent). Sound of Stars ( Donald Adams ) reserves the right to delete any objectionable ... morematerials. you can use these frequencies with your device.
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Free Shipping Condition: New Location: China The silver-coated side of the ceramic plate of the transducer is a negative electrode, while the larger side of the other two silver layers is a positive ... moreelectrode, and the smaller side is a negative plate.
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Free Shipping Condition: New Location: China The silver-coated side of the ceramic plate of the transducer is a negative electrode, while the larger side of the other two silver layers is a positive ... moreelectrode, and the smaller side is a negative plate.
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$2.59 Shipping Condition: New Location: China Output current: 5A. Full power, high stability output. Output power: 60W. Switch Upgraded Tactical Dockable Trigger Hand Grip Case for NS Switch. Due ... moreto the light and screen difference, the item's color may be slightly different from the pictures.
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Free Shipping Condition: New Location: China The silver-coated side of the ceramic plate of the transducer is a negative electrode, while the larger side of the other two silver layers is a positive ... moreelectrode, and the smaller side is a negative plate.
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$3.20 Shipping Condition: Neu Location: China Model: utg932e 30MHz, utg962e 60MHz (optional). Waveform: sine wave, square wave, oblique wave, pulse wave, noise, DC, arbitrary waveform. Nano Sheild. ... moreProduct application: waveform signal setting output.
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$4.99 Shipping Condition: New Location: Millersport, United States Product Name: NE555 Duty Cycle and Frequency Adjustable Module Square Wave. Description Module Scope: 1. Used as a square wave signal generator produces ... morea square wave signal for the experimental development use. 2. Used to generate the square wave signal to drive a stepper motor drive. 3. Produce adjustable pulse for the MCU to use. 4. Generating adjustable pulse to control the associated circuits. A brief description: 1. Size: 3.5CM* 3.6CM 2. The main chip: NE555; 3. Input voltage: 5V-15VDC. 5V power supply. The output current can about 15MA; 12V power supply, the output current can be so 35MA; 4. Input Current: 100MA 5. Output amplitude: 4.2V V-PP to 11.4V V-PP(depending on the input voltage. The output amplitude is not the same) 6. Maximum output current: 15MA(5V power supply. V-PP greater than 50% 35MA(12V power supply, V-PP greater than 50% Advantages: 1. Output with LED indication. There is no output LED quantity(low straightforward, high level LED off relatively low frequency LED flashes) 2. Output frequency range grade optional continuously adjustable output frequency; Low-frequency stall: 1Hz ~ 50Hz IF stall: 50Hz ~ 1kHz In the high-frequency stall: 1KHz ~ 10kHz High-frequency stall: 10kHz ~ 200kHz 3. the output duty cycle can fine-tune the duty cycle and frequency is not adjustable separately adjust the duty cycle will change the frequency 4. the output frequency is adjustable; Cycle T = 0.7*Ra + 2*Rb)C Ra. Rb:0-10K adjustable; LF gear C = 0.001UF; IF file C = 0.1UF; In the high-frequency file C = 1UF; High-frequency gear C = 100UF. The waveform frequency buyers can own calculations. NOTE:Output duty cycle can fine-tune the duty cycle and frequency is not adjustable separately adjust the duty cycle will change the frequency. For more quantity. Please contact us, 1) We accept PayPal payment ONLY. inkfrog terapeak. I000000. InkFrog Analytics. C2g3.RcmdId ViewItemDescV4,RlogId p4%60bo7%60jtb9%3Fuk.rp*5f%3Ec2g3-13f1ff2aef7-0xf4-
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$3.00 Shipping Condition: New Location: China Signal load capacity: output current 5~30mA. XXX (no decimal point): value 1Hz~999Hz, unit 1Hz. XX (the decimal point is in the hundred digits): the value ... moreis 1.00KHz~9.99KHz, the unit is 0.01KHz. 3.XX.X (decimal point is ten): value 10.0KHz~99.9KHz, unit 0.1KHz.
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Free Shipping Condition: New Location: Brentwood, United States Because the output current is not large, it is only suitable for powering small current circuits. With 1 channel buzzer. Can test the continuity of the ... morewire, and can also test low-frequency signals.
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Free Shipping Condition: New Location: China 5 PCS TCS3472 Color Sensor Recognition Module RGB IIC with IR Filter for Arduino STM32 Description: This module is based on the AMS TCS3472XFN color light ... moredigitizer as the core color sensor. The sensor provides digital output of Red, Green, Blue (RGB) and clear light sensing values. The integrated IR blocking filter minimizes the IR spectral component of the incident light and allows for accurate color measurement. Communication via I2C interface. Product Parameters: Operating voltage: 3.3V/5V Control chip: TCS3472XFN Logic voltage: 3.3V/5V Communication interface: I2C Package Included: 5 X TCS3472 Sensor Module(Double orifice version) See more in the flyfuntech2022.
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$14.45 Shipping Condition: New Location: Rolla, United States Peak Pulse Power 180 kW Test with 500 ns pulse width TLP at 1 Hertz. Usable Frequency Range DC – 3.5 GHz. SMA connector interface, up to 3 kV peak pulse ... morecapability. Nominal Impedance 50 Ohm
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Free Shipping Condition: New Location: China The diaphragm moves back and compressed air is blown through the valve output port. The pulse is in the "on" state. Z type pulse valve is a right angle ... morevalve with 90° angle between import and export, which is suitable for the installation link between air bag and blowing tube, with smooth airflow, and can provide the required air pulse for dust cleaning.
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Free Shipping Condition: Neu Location: China Bring more practical functions to users with a small size, it also has good portability. Automatic detection of pin definition. Automatically analyze ... moreNEC protocol infrared code. DSO-TC3 transistor tester is especially suitable for fast pairing of transistors, identification of mixed surface mount and wordless components, and preliminary screening of small batch components.
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Free Shipping Condition: New Location: China Pac king: 1PC. The pressure loss is reduced and it is suitable for working situations where the gas source pressure is low. Electromagnetic pulse valve ... more(also known as diaphragm valve) is the compressed air "switch" of the dust cleaning and blowing system of the pulse bag type dust collector.
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$2.70 Shipping Condition: New Location: China 5PCS USB 3.1 Type C Connector 16 Pins Female Socket Receptacle Adapter 2.54mm Connector Socket Solder- Wire & Cable PCB Board. 5x USB 3.1 Type-C Connector. ... more5PCS USB 3.1 Type-C Connector Female Test PCB Board Power Adapter 16P 2.54mm.
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$2.99 Shipping Condition: New Location: China MAX30100 Purple Board. It integrates a red LED and an infrared LED, photodetector, optical device, and low-noise electronic circuitry with ambient light ... moresuppression. This particular LED color combination is optimized for reading the data through the tip of one’s finger.
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$3.00 Shipping Condition: New Location: China 10Pcs Wave Frequency Adjustable NE555 Square Duty Cycle Pulse Signal Generator. Function: produce different frequency square wave or rectangular wave. ... moreOUT is the output signal frequency. (6) The output frequency is calculated: Period T = 0.7 (Ra + 2Rb) C Ra, Rb is 0-10K adjustable.
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Free Shipping Condition: New Location: China 1-5V accuracy 1%,
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Free Shipping Condition: New Location: Tomball, United States Input Signal Characteristics NPN open collector input. Protection Class Front Panel. Industry-leading 0.87" (22 mm) height, 6 digit, red LED display enables ... moreviewing from greater distances. 1/8 DIN size with minimal depth of only 3.6" (92 mm) allows mounting in small enclosures Product Specifications.
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Free Shipping Condition: New Location: Melrose, United States Triplett 3399 Fox & Hound Premium Tone and Probe Kit with Adjustable Sensitivity, Bandpass Filter, and Tone Selector. The Triplett 3399 Fox & Hound Premium ... moreTone and Probe Kit consists of a versatile Fox 2 Tone Generator (Toner) and a high performance Hound 3 Inductive Amplifier (Probe).
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Free Shipping Condition: New Location: Lathrop, United States (★Dual MOS output: This MOS tube pulse generator uses dual MOS parallel active output, lower internal resistance, higher current, and strong power. 15A, ... more400W at normal temperature. Dual MOS output. Normal temperature 15A 400W).
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$13.65 Shipping Condition: Used Location: Thomastown, Australia
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$3.75 Shipping Condition: Neu Location: China JDS2900 generator 1. Arbitrary waveforms can be drawn using the host computer software;. Burst function: 4 trigger modes, sine wave, square wave, sawtooth ... morewave, or arbitrary wave can be used to generate pulse train, the number of pulse period is continuously adjustable between O-1048575.
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Free Shipping Condition: Neu Location: 荔湾区, China ã¦â€“â°ã¥â»âºã§â½â€˜ã©â¡âµ 6 NE555 Frequency ... moreAdjustable Module Duty Cycle Square Wave Stepper Motor Driver Description: 100% brand new and high quality Quantity:1pc Weight:7 g Color: as picture show Size:30mmx22mmx13mm/1.18"x0.87"x0.51"inch) approx) The scope of this module: 1.Is used as a square wave signal generator generates a square wave signal used for experimental development. 2.To drive a stepper motor for generating a square wave drive signal. 3.Adjustable pulse generated for use by MCU. 4.Adjustable pulse generation. Control circuitry associated. A brief description: 1. The main chip: NE555; 2. Input voltage: 5V-15VDC. 5V power supply. The output current can 15MA around; 12V power supply, the output current can 35MA around; 3. The input current: ≥ 100MA; 4. The output amplitude: 4.2V V-PP to 11.4V V-PP. Different depending on the input voltage. The output amplitude will be different) 5. The maximum output current: ≥ 15MA(5V power supply. V-PP greater than 50% ≥ 35MA(12V power supply, V-PP greater than 50% Advantages: 1. The output with LED indication. There is no output straightforward(low LED volume, high LED off frequency is relatively low, the LED flashes) 2. The output level selectable frequency range. The output frequency is more continuously adjustable; LF file: 1Hz ~ 50Hz IF file: 50Hz ~ 1kHz High-frequency file: 1KHz ~ 10kHz HF file: 10kHz ~ 200kHz 3. The output duty cycle can fine-tune. Duty cycle and frequency is not separately adjustable, adjusting the duty cycle will change the frequency 4. The output frequency is adjustable; Period T = 0.7(RA +2 RB) C RA. RB is 0-10K adjustable; Low profile when C = 0.001UF; IF stalls C = 0.1UF; High-frequency file C = 1UF; HF stalls C = 100UF. So the frequency of the waveform buyers can own calculations. Note: Due to the difference between different monitors. The picture may not reflect the actual color of the item. Thank you! Package
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Free Shipping Condition: New Location: Chicago, United States The MIC2755 is composed of multiple comparators, a reset pulse generator, and logic. The MIC2755 detects three different battery states: battery OK, low ... morebattery, and dead battery. The reset (/RST) output is asserted for at least 700ms when a fresh battery is inserted.
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$3.00 Shipping Condition: New Location: China The main chip: NE555;. 1PCS X NE555 Duty Cycle and Frequency Adjustable Module Square Wave. -Low-frequency stall: 1Hz ~ 50Hz. -IF stall: 50Hz ~ 1kHz. ... more-In the high-frequency stall: 1KHz ~ 10kHz. -High-frequency stall: 10kHz ~ 200kHz.
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$2.99 Shipping Condition: New Location: China General purpose crystal oscillator, used in various circuits to generate oscillation frequency. Quartz crystal resonator for CTVVTR. ✨ Material：Quartz ... moreCrystal. Quartz crystal resonators for clock pulses, used in conjunction with other components to generate standard pulse signals, widely used in digital circuits.
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$5.36 Shipping Condition: Neu Location: China FY-Economic series adopt direct digital synthesis (DDS) technology and FPGA design. With 14 kinds of frequently-used waveform internal preinstalled, it ... morecan also output arbitrary 8-bit 256 dots user-defined waveform.
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$3.69 Shipping Condition: New Location: China NEW DC 3v-6v to 400kV 400000V Boost Step-up Power Module High-voltage Generator Description: input voltage: DC 3 V to 6 V Input current: 2 a- 5 a High ... morepressure type: the type of pulse current Output voltage: 400000 v(Please pay attention to safety) High pressure discharge distance between: 10 mm- 20 mm The output high voltage wire length: 100 mm Input power cord length: 100 mm(the red line is positive) Wiring: Red and green power connection red line:+" green line" output: the other side.Same color cable pls notice: the high-voltage module should avoid the use of electricity in high voltage no-load. Power must be adjusted to a suitable distance to the high-voltage output line. Battery capacity is proportional to the distance and the use of the high-pressure arc( not a voltage as high as possible, you must provide enough current) Experimental test of the arc distance from short to long, Do not exceed the maximum arc distance electricity, energy can not be released due to high pressure, can easily damage the module. Work: intermittent. Continuous work does not allow more than 1 minute and the output side does not allow shorting. Improper voltage and long working hours easily damaged module Package included: 100% BRAND NEW 1pcs DC 3v-7.2v to 200kV 200000V Boost Step-up Power Module High-voltage Generator About Payment: We accept PayPal only. All major credit cards are accepted through secure payment processor PayPal. Payment must be received within 7 days of auction closing. If you have bought multiple items from me. You can send me one payment for all the items instead of paying for them individually. When you click the Pay Now button, eBay will automatically determine if there are other items you have won or purchased from me and will combine them for your review. About Returns: If you are dissatisfied with our item or service. Then please follow the good eBay practice to contact us by ebay message before leaving any feedback. We are committed to resolve all issues in a friendly and satisfa
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Free Shipping Condition: New Location: United States 30P Porcelain Chip Capacitor X2. 103 Monolithic Capacitor X3. The second signal generator consists of CD4060 and CD4013, which generates a square wave ... moresignal with a frequency of 1HZ. CD4060 is a 14-level binary frequency divider/oscillator.
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$3.50 Shipping Condition: New Location: China Hot sale $16.99 $5.81 $3.44 $3.55 $5.44 $9.44 New Arrival $27.73 $127.95 $3.51 $5.65 $3.40 $2.42 Payment info $6.08 $3.43 $8.18 $7.29 $7.14 $5.55 $4.01 ... more$6.16 Product Name:1pcs NE555 Duty Cycle and Frequency Adjustable Module DIY Kit Square Wave SKU:3210 Items Description Features: 1.square wave signal generator. 2.Adjustable pulse 3.PCB size: 3.5x3.6cm 4.input voltage:5V-15VDC Package Listing: 1.5k ohm resistor x1 PCB x1 3296-103 potentiometer x2 male several short cap x1 3mm LED x1 104 cermaic capacitor x2 102 cermaic capacitor x1 DIP8 IC socket x1 NE555 x1 1uf 25v capacitor x1 $27.25. $12.80 $27.28 $12.25 $34.68 $26.49 $24.07 $8.40 Hot Category in our shop! Discount up to 50% Payment, Shipping, Feedback, Returns, About Us, FAQ, We accept PAYPAL payment ONLY. All the item(s) will shipped to your PAYPAL ADDRESS. Please update your Latest Detailed. Exact and Precise PAYPAL Address when purchase. 1) Items will be sent out in 1-2 working days when your payment is clear. 2) For US customers.We use E-Packet(China Post) Delivered in 7-15 days. For Other countries. We use Singapore/Hongkong Post for Free shipping. Order ≥ $40. Free Registered Tracking is provided for you. Order ≤ $40. But need Tracking, you may pay extra cost for $3-$5. 3) Expetited Shipping Service(DHL.FEDEX,EMS) is also provided,Plz contact us for details. 4) About tax.We will do our best to help you to clear the goods,and the tax depends on each country custom. 5) As it is international shipping. Please be patient for your package. We offer Replacment or Refund if you cant get package. When you are satisfied with our service or product. Please leave us Positive Feedback& 5 Star DSR as the following image. Your satisfaction and support is extremely important to our work! If you experience any problem. Please feel free to contact us in advance. We promise to try our best to safisfy you! Please view How to leave us the Positive feedback STEP BY STEP. 1)If for some reason you're not satisfied with our service or product quality. Please
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$3.20 Shipping Condition: Neu Location: China GM328A transistor tester X1. Pulse signal generator, turn left or right test button to adjust the pulse duty cycle from 1% to 99%. Press and hold the ... moretest button to exit the pulse signal generator. Square wave generator, with multi gear square wave frequency selectable.
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$2.99 Shipping Condition: New Location: China It integrates a red LED and an infrared LED, photodetector, optical device, and low-noise electronic circuitry with ambient light suppression. Wear the ... moredevice for heart rate and blood oxygen collection, and wear it on your fingers, earlobes and wrists.
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