This circuit was found in the February 1997 issue of Electronics Now magazine. The frequencies depend on the crystal and other tuned circuits.
We found this circuit in the magazine Eletcronics Now of July 1994. The power supply is according to...
This circuit uses the 7815 regulator to obtain a voltage for motor control num shield for PC. The...
This simple Philips circuit from the 1960s can use any general-purpose transistor. The signal is...