LM3900 Rectangular Oscillator (CB25179E)

This 1 kHz oscillator uses a Norton LM3900 operating system. The frequency depends on C1 and R1 and can be changed.

Monostable 7555 (CB25126E)
This circuit has a start and reset switches and can generate signals at long intervals determined by the...
PC resistance meter (CB20544E)
We found this circuit in English documentation for PCs from 1996. The ZN448 is a very uncommon...
Power Sequencer for Stepper Motor ULN2001 (CB11864E)
This circuit produces a sequence of steps controlled by P1 and applied to a 12V stepper motor with...