Equipment information:

Sorensen Company DCR-20-80B Power supply
Sorensen Company
Model: DCR-20-80B
Date: 1985
Category: Measurement instruments
Group: Power supply
Description: 1800 Watt Power Supply
Designed for either bench or rack use, the typical DCR-B
power supply provides
a highly regulated, precise dc output, adjustable over a
wide range.
It operates from a nominal 115 Vat (208/220/230 Vat inputs
are available as options)
and exhibits a rapid response to transients, both load and line.
DCR-B series supplies are phase controlled type with SCR’s
(Silicon Controlled
Rectifiers) or Triacs at the input to the transformer,
followed by a passive LC
filter. This design allows for a wide range of output
voltages, simplicity of
design, and offers large amounts of regulated power at
relatively high efficiencies
compared to linear regulators.
Silicon type semiconductors are used extensively in DCR-B
circuitry, and contribute
significantly, to the units’ wide ambient temperature range
Low dissipation transistors and diodes are located on a
single printed circuit
board while high dissipation devices are heat sinked to
aluminum brackets and
All controls used during normal operation, except the OVP
control, are mounted
on the front panel. These include a power circuit breaker,
VOLTAGE adjust potentiometers, and FINE and COARSE CURRENT
adjust potentiometers.
The system output is taken across a terminal pair at rear
strip TB2.
A variety of Sorensen power supply application notes are
available through your
Sorensen Service Representative. These notes detail many
hook-up configurations
and special usages available to meet most power supply
1.2.2 Automatic Crossover
There are two basic operating modes, voltage and current. In
the voltage mode,
the voltage is held constant while the current varies with
the load.

These manuals are available for the above equipment:

Sorensen Company -- DCR-20-80B -- Service and User Manual
File name: Sorensen-7359-Manual-Page-1-Picture
Manual Type: Service and User Manual
Pages: 67
Size: 5.47 Mbytes (5733964 Bytes)
Language: english
Revision: D
Manual-ID/Number: 165041
Date: September 1985
Quality: Scanned document, all readable.
Upload date:
MD5: 1f4116af7341666a2162dfbcb138a0f0
ed2kID: b2e27ac8f737ab8cd9dd3dcd6c3dc5bb
Downloads: 121 since 15 November 2015
This manual contains operation and maintenance data on the
1800 watt units of
the DCR-B series Sorensen Power Supplies. It is intended to
familiarize the
user with the functioning of the unit, to introduce the
varied applications to
which the unit may be adapted, and to furnish sufficient
maintenance data to
assure long operating life.
Six major sections form the manual divisions. Section 1
contains a brief functional
description of the DCR-B series power supplies. Initial
inspection and checkout
procedures are outlined in section 2. Operating
instructions, including methods
for adapting units to various applications, comprise section
3. Sections 4 and 5
provide the principles of operation and maintenance
procedures respectively.
System drawings and the replacement parts list are provided
in section 6.
Start Free Download


No comments yet.

Add Comment

* Required information
(never displayed)
Bold Italic Underline Strike Superscript Subscript Quote Line Bullet Link Email Image Video
Smile Sad Huh Laugh Mad Tongue Crying Grin Wink Scared Cool Sleep Blush Unsure Shocked
Enter the last letter of the word satellite.
Enter answer:
Notify me of new comments via email.
Remember my form inputs on this computer.
Powered by Commentics