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 was taken from Maxim documentation from the 1990s. It can be implemented on the basis...
This circuit allows linear brightness control of an LED from an input voltage. The power supply must...
This circuit is from a Hands-On Electronics from 1987, but it can still be easily assembled, as...