This circuit for musical instruments was found in a 90’s Elektor. The circuit still applies, as the components used can still be obtained with some ease.
This power charger was found in a 1990s issue of Popular Electronics. Integrated circuits must be...
This power supply originally created for the CB16776E project but can be used for any type of 12 V...
This circuit produces a low frequency magnetic field used in old inductive remote controls with a...