Common collector stage (CB22226E)

This circuit employs an old germanium transistor. The circuit is from a 1950s publication and uses RC coupling.

Power CMOS Shield (CB19763E)
Bipolar transistors are types of general use like BC548, while the power MOSFET can be of any type...
Noise Generator (CB17203E)
This circuit generates a signal rich in harmonics that extends up to close to 1 GHz, serving for...
Salen Key Low Pass Filter (CB4865E)
This second-order low-pass Salen-Key filter was obtained from an American 1980s documentation. Formulas...