Found in an Electronic Design from the 90s, this circuit does not need sinks for its components. The circuit converts 8 to 12 V input into 5 V x 3 A output.
This old receiver (1967) uses germanium transistors from the time and coupling transformers,...
This circuit can act as a shield being controlled by a microcontroller by pin 1 or 2. The...
A negative pulse applied to the input of the circuit shown in figure bellow turns on the relay....