Found in an ancient American documentation, this circuit can generate signals up to 40 MHz for a Z80, microcontroller widely used at the time. The circuit must be powered with 5 V and also serves as a shield.
This circuit generates signals with two waveforms. The circuit is from a documentation from the...
This circuit was found in an 80's Radio Electronics. The circuit multiplies the frequency of a low...
Found in Electronics Now from the 1980s, this amplifier can also be seen in commercial amplifiers...