The transistors in this circuit can be the BC548 and it also functions as a logic function. The supply voltage depends on the circuit to be excited.
This circuit combines field effect and bipolar transistors to obtain a 20 gain with a pass band...
We found this simple toy organ circuit in the February 1968 issue of Radio Electronics magazine. The...
The sensor for this alarm is a thin wire that, when interrupted, triggers a buzzer and turns on a...