Power Supply A fixed Voltage of 6V, 9V or 12V, max output 1A.
When see the circuit that me will advise this. As a result may think back go to many year , because of the equipment and model old circuit is exceedingly. But I believes in that many you may like. Because be the character of easy circuit , equipment , base , seek easy , build easy with. This circuit be DC power supply model Fix voltage 6V,9V or 12V give current about 1A topmost. Use Zener Diode be formed Regulated part Q1 be Transistor power perform enlarge current tallly go up go out to load next.