This circuit was found in the 1990 Motorola Dataar Linear. We can mount it with more modern equivalent transistors. Output transistors shall be provided with heat radiators.
This filter was found in an 80's English publication. However, it can be implemented with modern...
This circuit, which can be used as a shield, was found in old documentation. The circuit must be...
Found in Philips documentation from 1968 this circuit operates at frequencies up to 10 MHz with 76...