Amplifier with the 6FS5 (T393E)

This amplifier stage with the 6SF5 triode valve was found in a book with modern tube designs. The circuit has a gain of -47 times.

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...