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
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. [...]
58.80 $ 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 shop. If you have any problems, please contact me and I will try my best to satisfy you. We specialize in T-con boards and other electronic products. We have our own factory and a large number of T-con boards and power boards for sale. Please contact me what model you want [...]
83.05 $ Add to cartNew BN96-12944C/B BN96-12941A For Samsung TV UA32C4000P LCD TV Speakers Feature s: l Brand new and high quality l High quality for professional use l Replace the original damaged parts to ensure long lifetime and better work performance l Easy to use stable performance Specification: l Types: High-Pitched Speaker Core/ Bass S peaker CoreOptional l Applicable M odel : for Samsung TV UA32C4000P l Quantity: 1 PCS Package: [...]
52.99 $ Add to cartmost hdd boards have the unique biosrom or nvram chip which includes the unique data to access the hdd system area. if the bios information is not compatible with your hdd, there is no way to read the hdds data. because of this, we should use the original pcbs bios when we swap pcb. bios chip swapping is a must. before you purchase, please read: 1 this is just a pcb printed circuit boards, not the whole hard drive; 2 pcb board number is printed on the board, not on the sticker; 3 these boards are used, not brand [...]
61.24 $ 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 cartFeatures ● infrared resolution: 120 × ninety● temperature measurement range: - 20 ~ 400 ℃● temperature measurement mode: center point, high and low temperature tracking● photo storage: 16GB TF Card● high and low temperature alarm: image, beep, LED flashing● laser indication / LED lighting● three prevention design: IP54 / two meter fall prevention● PC analysis software● six palette options● adjustable emissivity● the service time shall not be less than 9 hours● 3.7v/2600mah rechargeable lithium battery● bottom design ¼ Screw holes can be used with tripod Uti120s detailed description 1. WORLDWIDE SHIPPING.Except some countries and APO/FPO2. Orders processed timely after [...]
282.00 $ 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 cartDear buyer Have a nice day!! Welcome to my shop. If you have any questions, please contact me. I will try my best to meet you. We specialize in TV accessories and other electronic products. We have our own factory and a large number of T-con boards for sale. Please contact me what model you want and I will give you the most favorable price. Some products are not brand [...]
83.99 $ Add to cartUTi260B Heavy Duty Thermal Camera UTi260B is a featured product of UNI-T heavy duty series thermal cameras. It is cost effective and with a wide temperature range: -20℃~550℃. It has higher IR resolution: 256×192 pixels than other models, and includes 7 color palettes and four display modes: thermal, visual image, fusion, and picture in picture. It is also user friendly and rugged enough to pass IP65 and 2m drop test. Technical Parameter 1.Temperature measurement range: -15℃ ~ measurement accuracy; ±2℃/±2 whichever is greater3.Thermal imaging pixels: 256 x 192 491524.Visible light lens: 640 x 480Only UTI260B5.Image [...]
790.33 $ 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.