We found this circuit for video games in a Radio Electronics magazine from August 1977. The transistor can be any common RF type that reaches the desired signal frequency.
This interesting circuit, which can be used as an alarm, was found in a 1997 documentation. It...
The figure shows how to implement a No – OR or NOR function with 1 general purpose transistor. The supply...
This circuit was obtained in Linear Technology documentation from 1993. The circuit provides 3.3 V and...