Inverter Amplifier MC33171 (CB14468E)

This circuit with 5 V power was suggested by Motorola's Linear Databook of 1990. The circuit has gained 10 and a pass band of 100 kHz.

Shadow Relay (CB1305E)
This well-known circuit triggers a relay when light striking the phototransistor is cut off. The...
Simple Voltage Monitor (CB14978E)
In this circuit the transistor switches when the voltage reaches the pre-set value in the trimpot. The...
20 to 20 kHz generator (CB9240E)
This rectangular signal generator was found in an Electronics World of 1966. The transistors are...