This vibrato circuit was found in Motorola's 1966 documentation. The circuit uses transistors of the time that can be replaced with current common types. Power is done with 3 9V batteries.
This is a common crystal oscillator configuration with 80s transistors. The circuit has the...
This CMOS integrated alarm was found in the July 1992 Radio Electronics magazine. The circuit has...
This circuit was found in an Electronics World of 1966. It has a range of 5 to 25 000 Hz at 1 dB...