The purpose of this circuit found in an old Elektor is to light a lower power lamp when the bigger one burns out. The loads depend on the triacs.
Found in an American documentation from 1968, this circuit senses the temperature through an...
This circuit is intended to trigger an alarm when the input voltage exceeds one value and to...
This 80's amplifier delivers 6 W of 8 ohm speaker power without using an output transformer....