Only for reference this is a circuito f a commercial receiver of the year 1958. The circuit uses coils and transformers hadr to find in our days. The circuit is destinated to receive MW stations.
We find this circuit in the manual of the used integrated circuits. The manual is from Linear...
The slope of an object causes the sensor, a mercury switch to be triggered. The circuit activates...
This circuit uses a photoransistor to control the frequency for this oscillator. Power supply...