This 4-voltage power supply using zener diodes has a maximum recommended current of 25 mA. The circuit was found in the May 1966 Radio Electronics magazine.
This simple circuit indicates when the two channels of stereo equipment are balanced. The diodes can...
We found this circuit with an operational transconductance amplifier in the Motorola Linear...
This circuit was obtained in an English magazine from 1978. We can easily assemble it because all...