100 mA regulator (CB21168E)

This 2-terminal regulator was obtained from a 1990s National Semiconductor manual. The components admit modern equivalents.

LM741 Buffered Peak Detector (CB25219E)
This circuit with the LM741 operational amplifier can be applied to other operational amplifiers. We...
Remote Control Test (CB4376E)
This circuit came out in the American magazine Electronics Now, in a 1993 issue. The magazine no...
12 V x 30 mA power supply (CB13958E)
This small source was found in an English documentation from 1970. The diodes can be 1N4002 for...