This simple low current circuit was found in a Radio Electronics magazine from August 1960. The circuit does not use transistors in regulation, but only zeners directly.
The original frequency of the Pierce Oscillator with bipolar transistor is given by the crystal, which...
Of course, the design indicates a specific application for a touch switch. Thus, analyzing the...
This circuit converts signals from the 350 to 500 kHz band to the 4.36 to 4.5 MHz band, enabling...