DC Amplifier MC33171 (CB14469E)

The circuit shown is powered by 5 V and was suggested by Motorola's Linear Databook of 1990. Equivalent operational amplifiers can be used.

LM380 2.5 W amplifier (CB10900E)
The traditional circuit was taken from a French magazine Radio Plans that no longer exists but can...
Monostable with LED Indicator (CB13595E)
This monostable circuit, from a 1977 Radio Shack documentation, uses a 7400. The time is given by the...
Night Switch (CB12701E)
The circuit shown in the figure activates a small indicator lamp that will start to flash when the...