30W Amplifier (T1544E)

This hi-fi amplifier is from a 1975 RCA tube manual. The critical components are the transformers. Power supply is included.

TTL Power Indicator (CB17285E)
This circuit excites incandescent lamps by making them flash alternately. There are 4 outlets and...
VCR Amplifier (CB25269E)
This circuit for VCR recording heads was found in the February 1990 issue of Radio Electronics magazine....
CW practice oscillator (CB7316E)
This circuit is from American documentation from the 90s. The configuration is very current and can...