Found in a 90’s Popular Electronics, this circuit can use other power MOSFETs. The transformer has a primary according to the desired continuous voltage at the output.
This audio-driven relay was published in the July 1977 issue of Radio Electronics magazine. The...
This circuit can be used for signaling a panel with a common incandescent lamp. The lamp will...
This crystal oscillator is indicated for the calibration of IF steps of common radio receivers. The...