This circuit is from a 90s Popular Electronics. The circuit employs a ZN461E that is not a common component today.
Common diodes when forward biased present a voltage fall of about 0.6 to 0.7 V. This voltage fall...
This simple circuit was found in an English magazine that no longer exists, January 1970 issue. This...
The 60 Hz hum or noise from the power grid (hum, in English) is one of the biggest enemies of...