This circuit is from an Electronics World of 1968. The transistors are of the time and the power is supplied with a voltage of 40 V. The circuit is high fidelity.
This single-cell Li-Ion battery charger was found in a 2005 Linear Technology manual. The circuit...
This circuit was obtained from a Popular Electronics of 1994. The magazine no longer exists in its...
Using this circuit the lamps glow in sequence in a speed given by the capacitors. The SCRs present a...