>>> DUAL REGULATOR ASSEMBLY <<<
The voltage regulator assembly shown in figures 1 and 2 can be powered from a 28 or 36 volt center taped secondary winding of a power transformer with a 117 volt, 60 Hz primary winding, or for portable equipment applications, standard alkaline batteries. Three 9 volt or five 6 volt batteries connected in series are suggested (27 or 30 volts). The circuit diagram of figures 3 and 4 show AC and DC sources driving the regulator. For battery operation, diodes, D1 – 4 provide reverse battery polarity protection. The board size is 4.0 X 2.2 (inches).
Figure 1, Dual Regulator Assembly, Side 1
===
Figure 2, Dual Regulator Assembly, Side 2
===
Figure 3, AC Power Line Operation
To power the DRA12, use transformer P/N F122X or 166G28, and to power the DRA15 and DRA18, use transformer P/N P-8612.
===
Figure 4, Battery Operation
Three 9 volt or five 6 volt batteries connected in series (27 or 30 volts) will power the DRA12 and DRA15.
===
DRA PC Board Wiring Diagram
===
Plus & Minus 12 volt Regulator Assembly DRA12
===
Plus & Minus 15 volt Regulator Assembly DRA15
===
Plus & Minus 18 volt Regulator Assembly DRA18
===
===