Simple 5V regulator (CB8815E)

This simple 5.6 V regulator circuit was found in a 1966’s Philips. The zener can be changed to obtain other voltages.

CMOS Mixer (CB11502E)
This digital mixer uses CMOS integrated circuits. The circuit was originally published in an...
Crystal Oscillator II (CB19018E)
The maximum frequency of this oscillator depends on the voltage comparator used. For common types,...
omplex Signal Generator or Ramdom Pulses 4093 (CB13173E)
C The combination of rectangular signals of different frequencies and intensities can result in...