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I
DUAL OUTPUT POWER SUPPLY
Agilent MODEL E3620A
OPERATING AND SERVICE MANUAL
FOR INSTRUMENTS WITH SERIAL NUMBERS
KR71804262 AND ABOVE
For instruments with Serial Numbers above
KR71804262, a change page may be included.
Manual Part No. E3620-90001 April 2000
Edition 6
SAFETY SUMMARY
The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument.
Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design,
manufacture, and intended use of the instrument. Agilent Technologies assumes no liability for the customer's failure to comply
with these requirements.
BEFORE APPLYING POWER. SAFETY SYMBOLS
Verify that the product is set to match the available line volt-
Instruction manual symbol; the product
age and that the correct fuse is installed.
will be marked with this symbol when it is
GROUND THE INSTRUMENT. ! necessary for the user to refer to the
instruction manual.
This product is a Safety Class I instrument (provided with a
protective earth terminal). To minimize shock hazard, the
instrument chassis and cabinet must be connected to an or Indicate earth(ground) terminal.
electrical ground. The instrument must be connected to the
ac power supply mains through a three-conductor power
cable, with the third wire firmly connected to an electrical
ground(safety ground) at the power outlet. Any interruption of The WARNING sign denotes a hazard. It
calls attention to a procedure, practice,
the protective(grounding) conductor or disconnection of the WARNING
or the like, which, if not correctly per-
protective earth terminal will cause a potential shock hazard
formed or adhered to, could result inper-
that could result in personal injury. If the instrument is to be
sonal injury. Do not proceed beyond a
energized via an external autotransformer for voltage reduc- WARNING sign until the indicated con-
tion, be certain that the autotransformer common terminal is ditions are fully understood and met.
connected to the neutral(earthed pole) of the ac power lines
(supply mains).
The CAUTION sign denotes a hazard. It
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE. calls attention to an operating procedure,
Do not operate the instrument in the presence of flammable CAUTION or the like, which, if not correctly per-
gases or fumes. formed or adhered to, could result in
damage to or destruction of part or all of
the product. Do not proceed beyond
KEEP AWAY FROM LIVE CIRCUITS.
CAUTION sign until the indicated condi-
Operating personnel must not remove instrument covers.
tions are fully understood and met.
Component replacement and internal adjustments must be
made by qualified service personnel. Do not replace compo-
nents with power cable connected. Under certain conditions, The NOTE sign denotes important infor-
NOTE
dangerous voltages may exist even with the power cable mation. It calls attention to a procedure,
removed. To avoid injuries, always disconnect power, dis- practice, condition or the like, which is
charge circuits and remove external voltage sources before essential to highlight.
touching components.
DO NOT SERVICE OR ADJUST ALONE. DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT.
Do not attempt internal service or adjustment unless another Because of the danger of introducing additional hazards, do
person, capable of rendering first aid and resuscitation, is not install substitute parts or perform any unauthorized modi-
present. fication to the instrument. Return the instrument to a Agilent
Technologies Sales and Service Office for service and repair
to ensure that safety features are maintained.
Instruments that appear damaged or defective should be made inoperative and secured against unintended
operation until they can be repaired by qualified service personnel.
1-2
Table of Contents
SAFETY SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
SAFETY AND EMC REQUIREMENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
INSTRUMENT AND MANUAL IDENTIFICATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
ACCESSORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
ORDERING ADDITIONAL MANUALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
LINE FUSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
INITIAL INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Mechanical Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Electrical Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
INSTALLATION DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Location and Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Outline Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
INPUT POWER REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Power Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Line Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Voltage and Current Metering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Voltage Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
TURN-ON CHECKOUT PROCEDURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Overload Protection Circuits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Operation Beyond Rated Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Connecting Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Series Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Parallel Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
LOAD CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
PULSE LOADING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
REVERSE CURRENT LOADING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
OUTPUT CAPACITANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
REVERSE VOLTAGE PROTECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
1-3
GENERAL INFORMATION n EN 50082-1(1992) /
IEC 801-2(1991): Electrostatic Discharge Requirements
IEC 801-3(1984): Radiated Electromagnetic Field
DESCRIPTION Requirements
The Model E3620A Dual Output Power Supply is a compact, IEC 801-4(1988): Electrical Fast Transient/Burst
constant voltage/current limiting supply that delivers two iso- Requirements
lated 0 to 25 V outputs rated at 1 A. It is an ideal power supply
for design and breadboard work where single or dual voltages INSTRUMENT AND MANUAL IDENTIFICATION
are required. Each output voltage is continuously variable A serial number identifies your power supply. The serial num-
throughout its range and separate current limit circuits protect
ber encodes the country of manufacture, the week of the lat-
each output against overload or short circuit damage.
est significant design change, and a unique sequential
number. The letter "KR" designates Korea as the country of
Connections to the outputs are made to binding post type ter-
manufacture, the first one digit indicates the year (4=1994,
minals on the front panel. The outputs can be used individu-
5=1995, and so forth), and the second two digits indicate the
ally or in combination to satisfy any number of output
week. The remaining digits of the serial number are a unique,
demands. The positive or negative terminal of each output
five-digit number assigned sequentially.
can be grounded or each output can be left floating. A chassis
ground terminal is located on the front panel of the supply.
If the serial number on your supply does not agree with those
on the title page of the manual, a yellow Change Sheet is
The front panel also contains a line switch, output voltage
supplied with the manual to explain the difference between
controls, an autoranging digital voltmeter and a single-range
your instrument and the instrument described by this manual.
digital ammeter, and two meter select pushbutton switches.
The Change Sheet may also contain information for correct-
The meter pushbuttons select both voltage and current
ing errors in the manual.
monitoring for the output V1 and V2. The supply is furnished
with a detachable, 3-wire grounding type line cord. The ac
OPTIONS
line fuse is an extractor type fuseholder on the rear heat sink.
Options 0E3 and 0E9 determine which line voltage is
selected at the factory. The standard unit is configured for 115
SAFETY CONSIDERATIONS
This product is a Safety Class I instrument, which means that Vac ◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo