Using the 723 integrated circuit, this power supply has the voltage determined by R2 and R3, which can be changed. The circuit is from a Radio Electronics magazine from July 1971.
This circuit generates a PWM control signal using TTL logic. We found this configuration in a 1976...
This circuit, found in EDN documentation from the 90's, implements a clamp without signal...
September 2017 - Arduino Lucky Shield shields containing a 5 V OMRON-g6RL relay, a Everylight...