This IEC Regulator Module is a small but useful device that can be connected to any AC or DC power source and will convert the AC or unfiltered DC to a DUAL positive and negative smooth, adjustable, metered and regulated output of +/- 1.2 to 20V.DC at 200mA for electronic studies. Input and output is via 4mm sockets. The small meter monitors output voltage on one half of the output. NOTE that some electronic circuits require both positive and negative power supplies for them to operate properly. See also the positive regulator module LB2645-001.