This circuit has tone control, and its power depends on the supply voltage. The circuit is from the Philips integrated circuits manual from 1990.
Found in an Electronics World of 1968 this circuit has a 40 to 12 000 Hz bandwidth providing a 1.9 Vpp...
This amplifier was obtained in an Electronics Now based on the LM1875. The circuit must be powered...
This timer controls two relays, each with a different timing, activated separately. The circuit is from...