Adjustable Dual Output Positive & Negative Voltage Power-Supply
Kit (Adj. output +/- 1.25V to +/-24 VDC)
is an OEM electronics board that allows you to connect up to
Dual 30V AC on one side of the board and get adjustable voltage
regulated (VDC) on the other side.
Every facility should have a few of these boards handy. The
boards will allow you to easily power all your HVAC controller,
interface board and low-voltage equipments components (i.e.
+/-0-10V, +/-12VDC, +/-15VDC, +/-24VDC). The Terminal Block TB
connector is included and makes it easy to use.
With optional high-current configuration
of the features of the PS (LM317 and LM337) include: 1% output voltage tolerance, max. 0.01%/V line
regulation, max 1A output current, adjustable output down to
+/-1.25V, current limit constant with temperature, 80 dB ripple
rejection, output is short-circuit protected.
The board includes protection diode prevent capacitors from
discharging thru the regulator during an input short circuit.
Heat sinking block is usually require when pulling current > 250mA
(optional). Heat sink are manly manufacture from Aluminum
As a general rule the input voltage should be limited to 2 to 3 volts
above the output maximum voltage. The board can handle up to
+/-36 volts input, be advised that the power difference between
the input and output appears as heat. If the input voltage is
unnecessarily high, the regulator will overheat. Unless
sufficient heat dissipation is provided through heat sinking,
the regulator will shut down.
Therefore, you will need to mount a heat-sink on the
regulator that is capable of dissipating the access heat
produced. please also note, that the metal body of the
regulators LM317, LM337 and LM338 (TO-220 package) is
connected internally to the output leg of the IC (Not to
with central tap (CT) configuration, see schematic below.
our line of transformers click
Here or for
Isolation AC Power Transformer board
Please drop us a line at
firstname.lastname@example.org and let us know where you use this unique
dual power supply board. Or, of course, if you have any adjustments deemed important--and
one of our engineers will be happy to help you achieve them.