Oscillator HA7210 (CB22402E)

This circuit is from an old documentation and can be used to generate signals in different frequency bands.

High Current Regulator (CB10982E)
This circuit was obtained in a 1978 English magazine. This adjustable stabilized power source...
Transistor Push Pull Power Amplifier (CB20005E)
This circuit of a few watts of power shows a typical configuration from the 70s using driver and...
CW practice oscillator (CB7316E)
This circuit is from American documentation from the 90s. The configuration is very current and can...