3 W Stereo Amplifier (T368E)

This 3.5 W circuit per channel was found in the 1961 RCA tube manual. The circuit is power grid directly rectified without a power transformer

Temperature Controller (CB6010E)
This triac temperature control circuit was found in an 80s power semiconductor documentation. The circuit...
Complete Shift Register Using the 4027 (CB157E)
Figure bellow shows how n flip-flops can be associated to perform a shift register. Data is...
Automatic Station Finder (CB4318E)
This circuit is from 1986 documentation, being adaptable in radios of that time. The circuit uses the...