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PRECISION
HEWLET PACKARD POWER SUPPLIES
n Low-Cost CaKbrator : ,'
l Precision Lab StipgMy
n High StabMy @@ference
COPYRIGHT AND DISCLAIMER NOTICE
Copyright - Agilent Technologies, Inc. Reproduced with the permission of Agilent
Technologies Inc. Agilent Technologies, Inc. makes no warranty of any kind with regard
to this material including, but not limited to, the implied warranties of merchantability
and fitness for a particular purpose. Agilent Technologies, Inc. is not liable for errors
contained herein or for incidental or consequential damages in connection with the
furnishing, performance, or use of this material or data.
Output voltage eccurecy of Models 6114A end 6115A is however. that the wpplv mey not be stable under eil load
0.025% (25Oppm) plus 1mV - for example, at 40 volts conditions when the output capacitor is disconnected). This
output, the owxn voltege of Mcdel 6114A is eccurete feature is also useful when e specific application requires
within il 1mV. This xcurecy is etteined after only five local load decoupling.
minutes werrrwp, thus making these supplies especially
suitable for application es portable calibrators. Remote Programming
Models 6104A end 6105A (illustrated below) ere intended All four of these supplies ten be remote programmed by
for applications where the supply is to be primarily remote means of XI external voltage or resistince; when retnote
prqwmed. The output voltage control on these units resistance programmed, output voltage eccurecy is 0.01%
is e ten-turn potentiometer; en optional three.digit Decadial plus the ecwrecy of the remote progremming resistor, and
is available for improved resettability (Option 013). output current eccurecy is 0.25% plus the eccwecy of the
remote prcgramming resistor. All four m&Is ten be also
operated in autoseries, auto~parallel, and aut*tracking con.
,; `,, figurations.
For computer controlled applications, these supplies we
designed to be digitally programmed with the HP Model
694OA Multiprogrammer or 694lA Multiprogrammer Ex-
tender. The table below indicates the Multiprogrammer out.
pot cards required.
Output Metering
A single meter is provided on the supplies with pushbutton
voltage controls; the meter ten be switched to reed either
output voltage or output current. separate output voltage
end current meters ere provided ore the models with ten-
tunl voltage colltrol~.
OutPut current colltrols
Overvoltage Protection
A front-panel current control allow the maximum output A built-in overvoltage protection circuit (err SCR crowber)
current of these supplies to be set to eny desired value monitors the output end reduces the output voltage end
within the maximum rating. Using this control, the sup-
current to zero whenever e preset voltage limit (adjustable
plies can be operated es constant current sources with
from the front panel) is exceeded. This feature provides e
0.01% current regulation, A current mode indicator la light- convenient methcd of limiting the maximum output volt-
emitting diode) immediately lights when either the supply
ege supplied to voltage-sensitive loads.
is owerated in the gross current limit region, or the output
current level established by the setting of the front panel A new circuit technique used in these supplies permits the
control is reached. When the indicator is lighted, the out. output voltage to drop completely to zero once the over-
put voltage is uncalibrated, but the front panel voltmeter voltage protection circuit has been triggered, rather than to
continues to indicate the output voltage with en eccorecy only I-3V e* is typical with other SCR crowbars. This
of 2%. An optional tewturn current control with or with- swne circuit technique also permits the trip threshold to be
out e three-digit Demdial is available for increased resolu- set es low es 0.5V. thus providing load protection et very
tion end resettebility (Options 014 and 006, respectively). low wtpllt voltage levels.
The output capacitor ten be disconnected to reduce current Protection circuit operation is indicated bye light emitting
Surges, thereby improving the performance of the supply es diode located adjacent to the front panel overvoltage con.
a constant current wwce; this also increases programming trol. For systems applications, the overvoltage protection
speed by approximately one order of magnitude, (Note, circuits in e group of supplies ten be slaved.
-cv/cc
operation
with mode
indicator
witchab
to volts
or alTIps Ml25% output voltage
*cc"racy (at frmt or rear
terminals), available after
5.minute cold-start ~mn~up.
Owruoltage promtim
to
crowbar (with
;ndicator~ adinstable down 0.5V
r
Remotely programmable Auto-wins, auto-parallel, and
v&age and current output auto-tracking operation
Remotely
controllable
crowbar
L'Swtchable 115/23IlVac input L Remote sensing for
point-of4wd regulation
Rmovable output capacitor for
improved constant mrent operation
These four 40.watt precision power supplies are highaccw
acy instruments desigtwd for we as low cost calibrators,
working voltage standards, systems reference supplies, or
high-performance lab supplies. They are ideal for applica-
tions where an accurate, highly stable, easy-to-use source
of dc voltage is required. Operating characteristics of these
supplies are one or two orders Qf magnitude better than
typical laboratory supplies.
Output Ratings
All four models feature automatic dual-range operation.
For example, Models 6104A and 6114A can supply 0.2OV
at 0.ZA, and 20.40V at O-l A, without manual range witch.
ing. Automatic output current range cros,~over occws when
the supply is providing greater than one-half of the maxi-
mum rated output voltage. As shown in the sketch below,
each supply will deliver full rated output current while op.
erated in the lower half of the calibrated output voltage
range, and one half the rated output current while operated
in the upper half of the calibrated output voltage range
Pushbutton voltage controls on Models 6114A and 6115A
allow the output voltage to be set rapidly and accurately.
The setting is displayed in large, easy-to-read numeral$. A
four-digit pushbutton witch increases or decreases the out-
put voltage in wit steps, and the switches godiwxly from
"9" to "0" withwt backing down. A fifth digit, set via a
thumbwheel on the witch assembly, provides output volt-
age resolution of 20@0J.
O.Ol%`b mo!d m,%+ 508PA
----,-,,-...
o.om%+ 100"" 0.0005%+ ,OLlu"
0.005% + m!JA j mls%+ mA
jh" -, .EC!..-- ,,,,,
-,-,
8rllA *InA
i
Rack Adapter Frame, HP Part No. 5@60-8762: For permanently or
semi-permanently mounting one or two Precision Power Supplies
in a standard 19.inch rack.
Blaok Panel, HP Part No. 5flW876Q: Filler panel for blocking uw
used half of rack frame (or combining case below) when rack
mounting only one Precision Power Supply.
Carrying Handle, Model llO57A: Easily attached handle for added
portabiliw and handling convenience.
Comhinirq Case, Model lO52A: For mounting on8 or two Precision
Power Supplies in a standard 19.inch rack where quick and easy
removal and reinstallation of instruments isdesirable. A cooling
kit (listed below) must be installed at the roar of the combining
case when one r~r two Precision Power Supplies are operated in
the case.
Combining Case Cording Kit, HP Part No. 566M-0769: For 115Vac,
50.6OHz input.
Eombining Case Cooling Kit, HP Part nb Wl5MU%: For 23OVac,
506OHz input.
Prices*
Precision i%wer Supplies: Accessories:
6104A .,,....,.,,..,,.,........................,,..,..,,.................. : S440. Rack Adapter Frame, HP Part No. 5060.9762 . . . . . . . . $25.
6105A ,.,,,,,,..............................,....................................... $455. 6lank Panel, HP Part No. 5060-6760 $7.
61 14A ,,,.,......................................................................... $525. Carrying Handle, Model 11057A . . . . . . . . . . . . . . . . . . . $5.
61 15A . . . . . . . . . . . . . . . . . . . . . .. . . .. . . .. . . . . . . .. . . .. . . .. . . .. . . .. . . . . . . . . . . . . . . . . . . . . . . . $540. Combining Case, Model 105ZA ,,,,.................................... $150.
Options: Combining Case Cooling Kit (11 Wac), HP Part
008, Ten.turn output current ContrLll 525. No. 5060.0789 . . . . . . . . .. . . .. . . .. .. .. .. .. . . .. . . .. . . . . . . .. . . . . . . . . . . . . . . . . . . $35.
013, Three Digit Graduated Decadial Voltage Control $35. Combining Case Cooling Kit (23OVac1, HP Part
014, Three Digit Graduated Decadial Current Control ,..,,. $60. No, 5060.0796 . . . . . . . . . . . . . . . . . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . . . . . . . . . . . $36.50
*Prices apply to domestic U.S.A. customers only. For price information in other countries, contact your local HP Field Engineer.