B203T

The B203T is a linear bench power supply with three outputs, made by Oltronix (the logo reads 'ØLTRONIX'; it is sometimes misread as 'LTRONIX'). Our listing's details come from the front and rear panels in our photos; we found no datasheet for this model.

The front panel is marked 'Power Supply B 203 T'. U2 and U3 together give ±0-30 V at up to 1 A and are set with a single locking dial that has a turns counter, so the voltage can be set again precisely. The panel marks U2 and U3 for master/slave tracking. Each of the two outputs has a constant-current adjuster and a current-limit (CL) lamp. U1 is a logic supply, adjustable from 3.0 to 5.5 V at up to 3 A, with overvoltage protection at 6.2 V and an overcurrent lamp above 3 A. One LCD panel meter shows the voltage or current of any output, picked with a six-position meter selector.

The unit has an extruded aluminium case with a carry handle and runs on 230 V AC mains through an IEC inlet, with a 1 A slow fuse at the rear. Oltronix was a Swedish maker of laboratory power supplies (LABPAC range). Its rear label gives contact numbers in Switzerland, the Netherlands and Sweden. The CE mark shows this is a later Oltronix model, not one of the 1970s LABPAC units.