Voltage Monitor MC34064 (CB14536E)

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

Audio wattmeter (CB19768E)
The integrated circuits in this application are not very common today. One consists of an A / D...
General Purpose Preamplifier (CB26257E)
Found in the Encyclopedia of Electronic Circuits Volume 5 of 1995 this circuit has the gain...
1.2 W Amplifier TBA820M 1 (CB15212E)
The output power of this amplifier depends on the supply voltage that can be between 3 and 16 V....