LED Monitor for Stepper Motor Operation (MEC166E)

Figure 1 LED monitor.

Unijunction rectangular generator (CB9248E)
Found in an Electronic Design of 1964, this circuit operates with control voltages from 0 to 12 V...
Very simple remote control (CB24458E)
This circuit uses an SCR as an active component, working only at short distances. The circuit was...
Pulse generator 2N2646 (CB23922E)
We found this circuit in a Radio Electronics from July 1968. The circuit generates rectangular pulses...