Voltage Monitor MC34064 (CB14536E)

The component used in this circuit is uncommon today. The circuit is from Motorola's 1990 Linear Databook.

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...