Additional information
Compatible Audio & Video Equipment Style | Professional Audio Equipment |
---|---|
Brand Name | HAXNFIELEC |
Certification | NONE |
Origin | Mainland China |
Working Voltage | DC 12V |
Working Current | Above 100mA |
Internetowy sklep tanio
58.80 $
400 in stock
Compatible Audio & Video Equipment Style | Professional Audio Equipment |
---|---|
Brand Name | HAXNFIELEC |
Certification | NONE |
Origin | Mainland China |
Working Voltage | DC 12V |
Working Current | Above 100mA |
Operational Amplifier OP AMP Tester
For Single Dual OPAMP TL071 TL072 TL081/082
Notice:
This board is only for people with professional electronic knowledge, we do not provide operation guidance and technical support. Beginners please do not buy! !
From September 27, 2021, the PCB changed to black color.
Application:
Single op amp and dual op amp screening circuit board, the circuit board can judge whether the IC can be used for amplification, and can roughly judge the conversion rate of the chip at the same time. Can find out those low-speed chips that pretend to be high-speed chips.
Working Voltage:
DC 12V
Working Current:
Above 100mA
Principle Introduction:
IC1a in the circuit is connected to a multivibrator with a frequency of about 1Hz, and the OP Amp. to be tested is connected to a unity gain inverting amplifier working state.
IC2 is an EX-OR gate, and its truth table is that the output is 1 when the two inputs are inverted.
Therefore:
If OP Amp. is normal, points A and B of IC2 must be reversed, so C is 1, and it is still 1 after IC1b and 1d, so the yellow LED D3 lights up;
If the OP Amp. output is open, the point C of IC2 must always be 0, and it becomes 1 after IC1c, so that the red LED D4 lights up.
If the internal short circuit of OP Amp. makes the output voltage fixed to positive or negative, the output of IC1c is also a 1Hz low frequency square wave, and the red and yellow LEDs will flash alternately.
For chips with a low conversion rate, the status indicated by the LED is always yellow, and red will flicker faintly. This can also be used to roughly judge the conversion rate of the chip. Because most of the second-hand chips on the market use low conversion rate instead of high rate, it can also judge whether the chip is counterfeit or not.
The actual test of low conversion rate chips such as: OP07, LM741, the yellow light is always on, the red light is slightly bright.
The actual test of high conversion rate chips such as: TL071, NE5534, MC34071 and other chips, the yellow light is always on, the red light is off.
Single op amp model: LM741, LF356, NE5534, TL071, TL081, OP07 and other standard package single op amp.
Dual op amp model: LM358, NE5532, TL072, TL082, MC1458, RC4558, OP275, AD827 and other standard package dual op amps.
Packing List:
1pcs x Operational Amplifier Tester
94735 ESP Module TTGO T-Display ESP32 WiFi BT Module Development Board For Arduino 1.14 Inch LCD Control Board Development Board Features: 1. 32-bit low-power dual-core CPU for application processors Up to 240 MHz of main frequency 600 DMPS computing power. 2. Built-in 520 kb SRAM, 4 meters external psram. 3. Supports interfaces such as UART / SPI / I2C / PWM / ADC / DAC. 4. Support ov 2640 and ov 767 cameras, built-in flash wifi image support up TF card support. 5. Multi-mode support Pink lwip and freedos integrated sta [...]
72.63 $ Add to cartSpecification: Input voltage: 12V-60V Input current: maximum input current 15A Output voltage: 12v-80v continuously adjustable Output current: maximum output current 10A adjustable Output power: effective power P = input voltage V x 10A Conversion efficiency: up to 95 input voltage and current; output voltage and current affect conversion efficiency Short circuit protection: fuses Module size: 73 x 51 x 32mm/2.87 x 2 x 1.25 Weight: 177g Module nature: non isolated boost module boost Input voltage: 12-60VDC input for wide input voltage range applications Input current: 15A max over 10A, please strengthen heat dissipation Static working current: 15mA [...]
53.50 $ Add to cartHDMI To I2S Receiver IIS To HDMI Transmit Signal Conversion Board DAC Decoder Description: It adopts four-channel CMOD circulation differential line receiver driver, which is designed for applications that require ultra-low power consumption and high data rate. The device uses low-voltage differential signaling LVDS technology and supports data rates in excess of 400Mbps 200MHz. Notice: 1. The HDMI to I2S receiver board cannot be used for the HDMI interface output of Blu-ray players, etc.; 2. The I2S to HDMI transmit board cannot be used for the HDMI interface input of power amplifiers, TVs, etc. Packing List: 1pcs x Module [...]
55.26 $ Add to cartSmall volume DC-DC synchronous rectifier step-down module Application fields: DIY mobile power supply, vehicle power supply, communication equipment power supply, various occasions with strict requirements on volume and weight such as aviation model, etc.. Technical parameters: Model name Mini360 Ultra small volume DC-DC synchronous rectifier step-down module Module properties Non isolated Depressurization Rectification mode Synchronous rectification input voltage 4.75V-23V output voltage 1.0V-17V Output current Peak 3a, long time 1.8A conversion efficiency 96 high switching frequency 340KHz Output ripple 30mV when no load Load adjustment rate ± 0.5 Voltage adjustment rate± 2.5 working temperature-40 ° C to +85 ° C [...]
43.50 $ Add to cartProduct Name: R411b01_3v3_3pcs 3.3v Rs485 To Lvttl Rs232 Transceiver Converter Sp3485 Module For Esp8266 Raspberry Pie Breadboard Banana Pie Package inlcuded: 3 PCS R411B01_3V3 DC 3.3V RS485 to LvTTL RS232 converter Description: Read/write automatic control RS485 TO RS2323.3V TTL Logic level converter Operating Voltage : DC 3.3V Logic level : 3.3V LvTTL Logic level RS485 BUS IC : SP3485 Read and write automatic control IC :SM74HC04 7x 2.54MM pin Does not include pin ,mini size. Size : 17.9x11.7x2.8mm very small Weight :Only 0.7g Very light Application RS485 Temperature and humidity sensor PTZ camera LED controller MODBUS RTU RS485 Relay 485 [...]
47.04 $ Add to cartExcelValley - Mono Patch Cable Splitter - TS 3.5mm 1/8 - Modular Synth Eurorack Mono Audio Multi Splitter Adapter A passive 1 into 5 multiplier in a star shape. Suitable for your Eurorack modular synthesizer, or other general patching duties, where a mono 3.5mm cable is needed. Features Connect up to 5 devices to one source device - 6 Ports, 5 Way Nickel plated connectors provide high corrosion protection 3.5 mm adapter splits line into five 3.5 mm ports 1 input / 5 outputs any socket can be used as input Compatible with: Roland, Moog, Doepfer, Arturia, Korg Specifications Color [...]
50.48 $ Add to cartIf you are not sure about the model of the board, please send us a clear picture of the original board. Have a nice day!!Welcome to my store,Please contact me if you meet any question,I will try my best to satisfy you. We specialized in T-con board and other electronic products. We have own factory and a large number of T-con boards to sell, please contact me what model you [...]
47.90 $ Add to cartHW-882 2S 3A 18650 Li-ion Lithium Battery Charger Protection Board BMS Module 7.4V 8.4V Feature: 2S 7.4V/8.4V 18650 lithium battery protection board, suitable for protecting two rechargeable li-ion/lithium polymer batteries in series from overcharge and overdischarge. Specification: Charging voltage: 8.4V-9V Maximum working current: 3A Maximum instantaneous current: 5A Quiescent current: less than 3uA Internal resistance: less than 45mΩ Over-discharge voltage range: 2.3-3.0V ±0.05V Overcharge voltage range: 4.25-4.35V ±0.05V Short circuit protection: it can be protected and needs to be recharged Product size: 36 x 6 x 2mm Product weight: 3g Packing size: 50 x 50 x [...]
40.46 $ Add to cartDescription: 1. The TP5100 is a switching step-down dual section 8.4v/single section 4.2v lithium battery charging management chip. Its QFN16 subcompact package and simple peripheral circuits make the TP5100 ideal for high-current charging management applications in portable devices. 2. Meanwhile,TP5100 has built-in input overcurrent, undervoltage protection, chip overtemperature protection, short-circuit protection, battery temperature monitoring and battery reverse connection protection. 3. The TP5100 has a wide input voltage of 5v-18v, and the battery charging is divided into three stages: trickle precharging, constant current and constant voltage. [...]
40.70 $ Add to cartDescription: 1. The TP5100 is a switching step-down dual section 8.4v/single section 4.2v lithium battery charging management chip. Its QFN16 subcompact package and simple peripheral circuits make the TP5100 ideal for high-current charging management applications in portable devices. 2. Meanwhile,TP5100 has built-in input overcurrent, undervoltage protection, chip overtemperature protection, short-circuit protection, battery temperature monitoring and battery reverse connection protection. 3. The TP5100 has a wide input voltage of 5v-18v, and the battery charging is divided into three stages: trickle precharging, constant current and constant voltage. The [...]
40.74 $ Add to cart2S-6S Lithium Battery Balanced Charger Expansion JST XH Adapter Board for MEGA Power 860 960 RC Lipo Battery Charging Specification: JST XH Balance Charging Adapter 6S Expansion Board Support 2S-6S lithium battery Suitable for MEGA Power 860 and 960 chargers Dimensions: 60 x 25 x 15mm Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. 1 X Battery [...]
41.14 $ Add to cartFeatures: 100 Brand new and high quality; Silicone material, flexible, realistic and vivid. Transparent leaves are dotted with fluorspar luster. Can add beauty and delight to your aquarium. No harm to pet fish and easy to wash. It does not need any fertilizer or sand, directly Putting it into the aquarium fish tank. Simple and easy to use, it will always remain realistic looking. With the silicone sucker base to keep coral firmly in place. Material: Silicone Color: Green [...]
40.78 $ Add to cartThis Universal Fuel Filter Features an ultra fine filter element and permanently enclosed in a clear plastic housing that takes the new fuel we have and they hold up very well to the heat and vibration of your air cooled motors. Features: 100 Brand new and high quality New 3 PCS Fuel Gas Filters for Scooter Motorcycle Easy to install No additional tools are needed Gas Filter Fits Most Atvs, Dirt bikes, Go Karts, Scooters, etc Material: Plastic Color: As the picture Color random Size: Approx. 5.7 x 2.5cm L x Body D Tube [...]
40.36 $ Add to cartUSB 3.0 To Type C Adapter OTG Adapter Type C USB Portable Converter For Macbook Xiaomi Samsung Mobile Phone Adapters Connector Description: Features: Remind: Please make sure your phone support OTG function. 100 Brand New Type-C Male to USB Female Adapter Can be Used to Connect USB Peripherals / Devices to Mobile Keyboard, Mouse, Printers and Many More USB Devices Can be Connected and Uused with Mobile Very Compact & Ultra Stylish form Factor Connector is Made Up of High Electical Conducting Materials for Long Life, Good Connectivity and High SpeedData Transfer Specification: Size:1.8 [...]
40.38 $ Add to cartBullet Points:1、【Keep Lens Clean】: Front is a super useful tool, that can be used to prmise that your lens wont get dirty. And it prevents water, dirt, and fine dust and sand from staining your lens.2、【Wide Range Of Lenses】:Front Cover is suitable for a wide range of lenses, and it can extend from 60mm to 90mm and can be used as front and rear lens caps to provide great Absorption】: Rear Lens Cover is a useful tool. So slapping, bumping, or bumping your lens is no longer a problem for you need to worry, when you are using Rear [...]
41.14 $ Add to cartFeature: 100 brand new and high quality. New generic USB Data / Charging Adapter compatible for iPod shuffle 2nd Gen, Black Upload and charge your 2nd generation Shuffle through the USB port Unlike the perfect fit cradle, there is no need to remove Shuffle from your protective cases in order to plug into the charging port With this 2 in 1 cable adapter you can charge and transfer music simultaneously Accessory ONLY. Length: 100cm Package Content: 1X 3.5mm To USB [...]
40.63 $ Add to cartChcę coś kupić ale szukam informacji jak zamówić... |
Kupiłem coś ale chcę poznać status zamówienia... |
Odebrałem paczkę ale mam pytanie lub problem... |
Chcę dokonać zwrotu i potrzebuję informacji... |
Droptech Sp. z o.o. droptech.polska@gmail.com |
ul. Łódzka 118, Piotrków Tryb. Sprzedajemy tylko przez internet |
NIP: 7712911090 REGON 386758083 |
Wysyłka bezpośrednio od producenta lub dostawcy |
DARMOWA WYSYŁKA + ubezpiecznie dostawy + śledzenie przesyłki |
CAŁKOWITY ZWROT podczas reklamacji |
Reviews
There are no reviews yet.