This circuit was found in documentation from the 1970s. The transistor supports modern equivalents. L1 with C4 determines the frequency range of the signals that will be produced.
This inverter amplifier is suggested by a technical documentation from Texas Instruments. The RF...
This circuit was obtained in old documentation, but it is valid for modern triacs that must be...
Found in English documentation, this timer produces an audio signal at the end of the timing. The...