AC Tachometer (CB9353E)

This circuit was found in a 1969 EEE. It detects when there is a phase failure in a circuit using an inductive sensor.

| Clique na imagem para ampliar |

Single Pulse Trigger (CB23925E)
Using the 2N2646 this circuit was found in a Radio Electronics magazine from July 1968. The...
Comparator Reverse Switching For Interface or Shield (CB4590E)
Reversing the switching action, with the output going high when the input is low, can be done by...
RC Amplifier Circuit (CB4249E)
In the figure we have a two-stage amplifier circuit showing the voltages at various points. The...