The diagram is from a 1990s document. The integrated circuit must be equipped with a heat sink. The table shows the component values for different output voltages.
This circuit was found in a 90s Radio Electronics. It is intended to amplify the sound channel of...
This circuit uses a 4020 counter that divides the frequency up to 210, being found in a former...
This circuit was found in a Radio Electronics magazine from May 1967. The circuit has the time...