Found in old documentation, this circuit uses a double gate MOSFET. The operating frequencies depend on the coil, and the indicator is a microammeter.
This vibrato circuit was found in Motorola's 1966 documentation. The circuit uses transistors of the...
The CMOS 4046 integrated circuit is not very common today, consisting of a very efficient PLL for...
We found this circuit in an old publication. The transformer has a 9 or 12 V secondary, and the...