Used by radio amateurs to accompany telegraphic transmissions, this circuit generates an audio tone. The power comes from the transmitted RF signal itself.
This circuit functions as a thermostat triggering a relay when the boil control temperature...
This 1 MHz oscillator was found in the February 1992 issue of Radio Electronics magazine. The...
In this circuit we have the voltage multiplied by 5, obtaining between 50 and 80 V output when the...