This bridge circuit is designed for 8-ohm speakers delivering a few watts of power. The circuit is from a Radio Electronics from March 1990.
This 7400 TTL circuit has a memory, keeping the LED on when a pulse is detected. The circuit must be...
The frequency produced by this oscillator depends on the temperatire sensed by a thermistor. The...
We find this power oscillator circuit in a 90's Popular Electronics. The circuit can be powered by...