The circuit shown is from Texas Instruments optoelectronics documentation. The input signal is audio and equivalent LEDs can be used. Other operational amplifiers can also be used.
We found this simple IF circuit in a book from the 50's. The transistor is made of germanium and...
This circuit uses two transistors, the low noise BC549. Its quality is very good and it has a...
September 2016 - Mouser Electgronics already has in stock the new moisture digital sensor HDC1010...