This circuit was found in an old American documentation. Its purpose is a proportional scanning signal for the oscilloscope of the time, which used cathode ray tubes.
This circuit was found in an American documentation from the 60's. The transistors are from the...
This oscillator is indicated for the adjustment of FI of FM radios, having its frequency...
This configuration triggers an external circuit or simply an LED for time given by R1 and C1 (T =...