POWER-AC3PNDC-15C.  Low Current Dual Output 15 & -15 Voltage DC power supply board/Regulator Interface board.


the POWER-AC3PNDC-15C. is an Electronics board that allows you to connect Low voltage AC Center Trace (TC) or 17 to 32VAC on one side of the board and get dual low current regulated voltages, 15VDC and -15VDC  on the other side. Every industrial application designer should have a few of these boards handy. The boards will allow you to easily power all your Industrial Op-Amp transducers. The Terminal Block TB connector is included and makes it easy to use. 


The POWER-AC3PNDC-15C. board is designed to convert low current low voltages AC to stabilize +/- 15V DC. If used properly, it will eliminate the need for expensive industrial power supplies, which would otherwise be needed to carry out the same task. Commonly utilized as the heart of DC Power Supply for Amplified and In-Line Amplified Transducer.


AC3PNDC-15 C is easy to install, setup and operate. If you want to  professionally power your HVAC products, POWER-AC3PNDC-15C offers the features you need. Mounted easily via tow 0.125" mounting holes.


The board is designed to attenuate, filter and regulate low current low voltage AC to stable +/-15V DC.


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Standard Board


Basic operation of the voltage regulator board


The full diodes bridge D1-D4, together with the capacitor C1, C3 will convert input dual AC voltages to dual DC voltages.


The other side of the diodes bridge drives the low current voltage regulators U1 and U2. The voltage regulators are the main component of this regulators. The POWER-AC3PNDC-15C board typically has the ability to drive currents up to 80mA. For maximum voltage regulation, adding capacitors C2 and C4 correspondingly in parallel between the common leg and the output. This eliminates any high frequency AC voltage that could otherwise combine with the output voltage.




Transformer with central tap (CT) configuration, see schematic below.






Dual AC (AC1 and AC2) convert to low current -15VDC and +15VAC with common ground





Figure A


1. Output +/- 15V DC.

2. Input AC Voltage from CT transformer).

3. LED Power Indicator.


Mounting Option


Simply snap the Din-Rail mounted enclosure into your NEMA 4 box (enclosure) for watertight applications



The board Model C shown above mounted in EID-1593KBK black ABS plastic instrument enclosure with Din-Rail mounting options


Plastic enclosure and Din-Rail-clip are sold separately (for demonstration only).



POWER-AC3PNDC-15C Features


  • Up to 80mA output.

  • +/-5% voltage stability.

  • Power switch option.

  • Generally powered from any power source, Dual AC or DC, that is larger then 2 volts of the desired +/-15VDC output voltage.


  • Input voltage                           15-30V AC or DC

  • Relative Output voltage stability  +/-5%

  • Output current                         Up to 80mA, higher output current models are available.

  • PCB material                             FR4

  • Output Voltage                         +/-15VDC

  • Max power consumption             5W

  • Storage temperature                 40 - 70   [F]

  • Operating temperature               32 - 140 [F] (0 to 60C) @ 95% RH

  • Low board DC voltage                30[V] max

  • Manufactured                           100% in USA



* Prices, P#, SKU# and colors are subject to change without notice. 


Description and SKU#



15VDC and  -15VDC PS Low current Input up to 36V AC, outputs  +15V /80mA & -15V /80mA