This circuit was obtained from Popular Electronics from June 1978. It doubles the input DC voltage. Obtained current is very low, serving only for polarization circuits.
This circuit was found in a General Electric documentation from 1970. It is used in an optical...
Scratch is the scratching noise that occurs mainly with old records. This high frequency noise is...
Based on Allegro's A6275, this circuit controls the brightness of various displays. The circuit is valid...