Synchronized automatic switch (CB9260E)

This control circuit up to 1 kW was found in a 1967 RCA documentation. The components are from that time, and modern equivalents can be used.

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1 W Amplifier with the TAA300 (CB6164E)
Found in a 1968 documentation, this small amplifier was very popular at the time being used in...
Signal follower (CB9983E)
This simple audio signal tracer or follower can be made with a BC548 instead of the original...
Farm Protection System (CB16952E)
According to the 1990 documentation in which we found this circuit, the chickens must be fed at...