Equipment information

BK Precision 1651 Power supply
Manufacturer:
BK Precision
Model: 1651
Date:
Category: Measurement instruments
Group: Power supply
Description: Triple Output DC POWER SUPPLY
Information:
                                    The B & K-Precision Model 1651 Triple Output DC Power Supply
is a high quality, general purpose dc power source. It
provides two supplies with a 0-24 volt dc output and one
with a fixed 5 volt dc output. The 0-24 V supplies are
adjustable and are capable of current output of 0-0.5 amp.
The fixed 5 V supply has a current output of 0-4 amps,
allowing it to handle extensive digital logic circuitry. Two
panel mounted meters can simultaneously monitor the output
current and output voltage of either of the 0-24 V supplies.
The two 0-24 volt supplies can be operated independently or
in one of two tracking modes. In the series tracking mode,
the “B” supply tracks the voltage of the “A” supply. In the
series tracking mode the “A” and “B” supplies are connected
in series, allowing a single output of 0-48 V at up to 0.5
amp. In the parallel tracking mode, the two supplies are
connected in parallel, allowing a single 0-24 V output at up
to 1 amp.
Both 0-24 volt supplies may be used in constant voltage or
constant current applications. The crossover from constant
voltage to constant current modes is smooth and automatic.
LED’s indicate the Constant Current mode of operation. In
constant voltage applications, a current limit may be
preset. When load variations cause the current to reach the
preset limit, the unit then regulates output current rather
than output voltage. Current limits are adjustable from 6%
to 100% of maximum. In constant current applications, the
maximum voltage may be preset. When load variations cause
current to drop below the regulated value, the unit reverts
to regulated voltage operation at the preset value.
The fixed 5 V supply is ideal for powering digital logic
circuitry. The 0-4 amp capacity allows the supply to be used
for large circuits. Built-in overload protection
automatically limits the current output to a maximum of 4
amps. An LED indicator lights when the supply is overloaded.
The Model 1651 exhibits excellent regulation and low ripple
characteristics. The circuit design incorporates a
pre-regulator, which greatly reduces internal power
dissipation at low output voltages.
Reverse polarity protection prevents accidental damage to
the power supply from improper connection to an external
voltage, and current limiting protects the equipment being
powered, as well as the power supply.
The output is isolated from chassis and earth ground, which
permits full flexibility of connections. When needed, the
(+) or (-) polarity may be strapped to ground, or either
polarity may be floated to an external voltage.
Additionally, the two 0-24 volt supplies can be used as a
“split supply” with two positive voltages and a common
negative, two negative voltages and a common positive, or
one positive, one negative, and a common. All of these
configurations can be used with either matching (tracking)
or differing (independent) voltages.
The features and versatility of the unit, especially the
triple output and tracking features, make it an ideal
general purpose power supply for engineering lab
applications. It can serve as a single or multi-voltage
power source, including the bias supply, for breadboard and
prototype

TRIPLE OUTPUT
Operates as three separate power supplies. Each has floating
output and is completely isolated from the other two.
ONE FIXED 5 V SUPPLY
0-to-4 amp fixed 5 volt supply is ideal for use with most
digital logic circuitry. Adequate current capacity for
extensive circuitry.
TWO 0-24 VOLT SUPPLIES
“A” and “B” supplies are continuously variable over 0-to-24
volt range. Each supply has a 0.5 amp current capacity.
UNIQUE TRACKING FEATURE
The two 0-to-24 V supplies can be operated so that the “B”
supply tracks the “A” supply. Outputs can be strapped for
two positive voltages with a common negative, two negative
voltages with a common positive, or one positive and one
negative with a neutral common.
SINGLE 0-48 V SUPPLY
Series tracking feature allows use of “A” and “B” supplies
as one 0-to-48 V, 0.5 amp supply.
SINGLE 0-24 V 1 AMP SUPPLY
Parallel tracking feature allows use of “A” and “B” supplies
as a 0-to-24 V supply with a 1 amp current capacity (through
“A” output terminals).
CONSTANT VOLTAGE OR CONSTANT CURRENT
The “A” and “B” supplies provide regulated dc voltage output
or regulated dc current output. Crossover is smooth and
automatic.
METERING
Two, easy-to-read analog meters monitor output voltage and
output current of the “A” and “B” supplies. Use of two
meters allows simultaneous current and voltage metering when
using “A” and “B” supplies in tracking or independent operation.
LABORATORY QUALITY
Excellent regulation, low ripple.
LED INDICATORS
Identify mode of operation.
PRE-REGULATOR
Limits internal dissipation for higher reliability and
efficiency.

These manuals are available for the above equipment:

Manual Type: User Manual BKPrecision-8512-Manual-Page-1-Picture
Pages: 40
Size: 2.14 Mbytes (2240887 Bytes)
Language: english
Revision:
Manual-ID/Number:
Date:
Quality: Scanned document, all readable.
Upload date:
MD5: 71ceebf7a28ab83965bd7b5e1da39fff
Downloads: 100 since 24 January 2017
Information:
TEST INSTRUMENT SAFETY ...............................inside
front cover
INTRODUCTION.....................................................................................
1
FEATURES
...............................................................................................
3
SPECIFICATIONS
...........................................................................
5
CONTROLS AND
INDICATORS.......................................................
7
“A” Supply Controls And
Indicators................................................ 7
“B” Supply Controls And Indicators
................................................ 9
Fixed 5 V Supply Terminals and
Indicator......................................10
Rear Panel
Controls..............................................................................10
OPERATING INSTRUCTIONS
..........................................................12
Safety
Precautions..................................................................................12
Equipment Precautions
........................................................................12
Independent Use Of “A” Or “B”
Supply.........................................12
Series Tracking
Operation....................................................................18
Page
Parallel Tracking
Operation.................................................................22
Fixed 5 V Power Supply
Operation...................................................25
APPLICATIONS.........................................................................................29
General......................................................................................................29
Electronics Servicing
...........................................................................29
Electronics
Manufacturing....................................................................29
Electronics Design Lab
........................................................................30
Electronics
Education...........................................................................30
Battery
Charging...........................-........................................................30
Split
Supply............................................................................................30
MAINTENANCE.....................................................................................37
Fuse
Replacement..................................................................................37
Line Voltage Conversion
....................................................................37
WARRANTY SERVICE INSTRUCTIONS LIMITED ONE-YEAR WARRANTY
BKPrecision-8512-Manual-Page-1-Picture


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