This circuit that converts voltages from a battery into high voltages for tube circuits was found in Radio Electronics magazine from February 1960. The transformer is of a special type.
Found in a 90s Popular Electronics, this sensor operates by infrared reflection. The components are...
This simple PWM circuit was found in the March 1991 issue of Radio Electronics magazine. The...
This flasher was found in an old Hands On, but uses common components. The optocoupler can be...