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A9 – SR-19900
Description
For applications requiring a shunt regulator, Galil offers a small mountable model that can be configured for
varying voltage levels. Two fixed voltage threshold settings are available with jumpers, which can be set at either
33 or 66 volts. Additionally, a user defined voltage threshold can be set by changing a simple resistor. This shunt
regulator operates with hysteresis, where the regulator switches on at the set voltage threshold and switches off
at 2 volts below.
The shunt regulator should be placed in parallel with the power supply as in the figure below, and it should be
mounted to a metal surface using thermal grease to aid in heat transfer. Connections are made to the unit at VS
(voltage supply) and PG (power ground) using either the 4-pin connector or the 8-pin connector.
For a summary of shunt regulator operation, as well as details to help determine if one is required , please refer to
application note #5448 at:
A9 – SR-19900 ▫ 194
https://www.galil.com/support/appnotes/miscellaneous/note5448.pdf
.
DMC-21x5 User Manual 1.0a1
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