This cassette player motor speed control was found in the January 1991 issue of Radio Electronics magazine. The circuit is for voltages from 9 to 12 V.
Found in a Hands On Electronics from the 90s, this circuit can be easily assembled today, as the...
This 9 + 9 V symmetrical power supply was obtained in a 1977 symmetric publication but can still be...
This simple circuit for switching RF signals was found in an RF Design from the 90s. The circuit...