Found in American documentation from the 90's, this circuit is very current and can be implemented with transistors of general use. Never use a power supply without a transformer.
Found in Philips documentation from 1968 this circuit operates at frequencies up to 10 MHz with 76...
This circuit was found in a European technical documentation from 1991. It is a circuit that must...
This harmonic oscillator controlled by crystal was found in an American documentation of the 90's....