This small regulator with transistors can supply 75 mA currents for charging NiCad rechargeable batteries. The circuit is from the 90s, using components from that time.
This circuit is from an American publication from the 60's. The power is on the order of 600 mW....
Other operational amplifiers series, such as the MC34072, MC34074, MC35071, MC35072, MC35074 d...
Found in a European magazine from the 90s, this circuit emits beeps that are several seconds apart to...