This circuit is used in magnetic tape recorders, having been found in documentation in the 1960s. The circuit uses Japanese transistors, and the critical components are transformers.
This circuit activates a relay when the sensor receives light indicating dawn. A relay with a 4k7...
This small automotive NiCad battery charger uses only passive components and has the number of...
When the voltage in the circuit exceeds the value set in the trimpot, the LED goes off and, if a...