Radio with amplifier (CB20486E)

We found this circuit in a publication of 1991. The audio amplifier is an operational that admits equivalent.

Debuncer 4049 (CB24877E)
Another of the many anti-bounce circuits that we have in this section of our website. This one...
Transistor Radio TR 182 (CB18374E)
We found the circuit of this Japanese transistorized commercial receiver in a documentation from...
Pool Alarm (CB15424E)
Here is an interesting project for those who own a pool and are afraid that someone will fall into...