Circuitron
PS-2A Converter & Regulator

Walthers Part # 800-5305, p. 774 Walthers 2012 HO Scale Reference
A scale, $34.95, currently in stock at Walthers

 
A self-contained AC to DC converter with an adjustable voltage can be adjusted anywhere between 1.25 and 12.00 volts DC. Maximum continuous current output of the PS-2A is in excess of one amp. Ideal for powering any low current DC accessories including 1.5V micro-lamps. The AC or unfiltered DC input should be about 5-6V higher than the desired regulated aouput. The input voltage to allow maximum current output. The input voltage may be as high as 22V, but this may result in reduced current available at the output, particularly at lower voltage settings.