Linear Ramp Generator (CB5929E)

This circuit appears elsewhere on this site. This is from an American 80's circuit manual. Components used are not common today.

Opto-Coupler Tester (NI0023E)
A complete test for opto-couplers can be made using the circuit Bellow. The function generator...
Tool Torque Control (CB5422E)
This circuit can be used with common drills connected to the 110 V network. With change of R1 and...
Texas Instruments PCM5242 Audio Stereo Differential-Output DAC
Texas Instruments PCM5242 Audio Stereo Differential-Output DAC is a monolithic CMOS integrated...