This circuit was obtained from HAM Radio magazine in an 80's issue. The FETs are types of the time and the frequency is determined by the crystal. The circuit operates at voltages from 3 to 9 V.
Data applied to the input of this circuit is shifted one ceII to right following the clock pulse....
This shield circuit was found in an American publication from the 80's. The triac is of low...
This is a battery powered 3W power amplifier using germanium transistors. The circuit is from an...