This circuit is from a Radio Electronics from October 1963. The transistor is a power transistor of the time, and two transformers are used. The input has 10k impedance and is powered by 12 V.
This is the suggested transmitter circuit for the CB16880E. The emitting LED must be a...
Using a period sensor, this circuit triggers a relay when pressure changes occur. The circuit is...
The presented circuit provides voltages from 4.5 V to 12 V with currents up to 1 A. We obtained this...