This multi-output power supply was found in an article in Radio Electronics magazine in November 1985. Voltage regulators must be equipped with heat sinks.
This micro AM radio will tune strong stations in the frequency range between 530 and 1,600 kHz....
This circuit was obtained in a Electronics World of 1968. The transistors can be equivalent as the BC558...
Based on an integrated circuit of the time, this circuit appeared in the October 1979 issue of...