Found in Popular Electronics from the 90s, this 1.5 A power supply can supply voltages selected by a switch. The splitter resistors determine the output steps.
This power supply originally created for the CB16776E project but can be used for any type of 12 V...
The circuit shown in the figure below is suggested by ON Semiconductor (www.onsemi.com), based on...
Using an RCA CA3035 integrated circuit, this turntable circuit was found in the February 1970...