Suggested by Philips documentation from 1968, this circuit uses components from the era that can be replaced by modern equivalent types. The double transistor can be replaced by a matched pair.
Texas Instruments PCM5242 Audio Stereo Differential-Output DAC is a monolithic CMOS integrated...
Emitt This crystal-controlled oscillator can generate signals from 100 kHz to over 30MHz. The...
With this circuit it is possible to fire an SCR from the light that falls on a phototransistor. The circuit...