Found in a 1980s American documentation, this circuit is based on the common CMOS series activating a relay. The circuit is double-timed.
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....