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GENERAL INFORMATION
DESCRIPTION
The Model E3620A Dual Output Power Supply is a compact,
constant voltage/current limiting supply that delivers two iso-
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
are required. Each output voltage is continuously variable
throughout its range and separate current limit circuits protect
each output against overload or short circuit damage.
Connections to the outputs are made to binding post type ter-
minals on the front panel. The outputs can be used individu-
ally or in combination to satisfy any number of output
demands. The positive or negative terminal of each output
can be grounded or each output can be left floating. A chassis
ground terminal is located on the front panel of the supply.
The front panel also contains a line switch, output voltage
controls, an autoranging digital voltmeter and a single-range
digital ammeter, and two meter select pushbutton switches.
The meter pushbuttons select both voltage and current
monitoring for the output V1 and V2. The supply is furnished
with a detachable, 3-wire grounding type line cord. The ac
line fuse is an extractor type fuseholder on the rear heat sink.
SAFETY CONSIDERATIONS
This product is a Safety Class I instrument, which means that
it is provided with a protective earth ground terminal. This ter-
minal must be connected to an ac source that has a 3-wire
ground receptacle. Review the instrument rear panel and this
manual for safety markings and instructions before operating
the instrument. Refer to the Safety Summary page at the
beginning of this manual for a summary of general safety
information. Specific safety information is located at the
appropriate places in this manual.
SAFETY AND EMC REQUIREMENTS
This power supply is designed to comply with the following
safety and EMC(Electromagnetic Compatibility) require-
ments:
B
IEC 1010-1(1990)/EN 61010 (1993): Safety Require-
ments for Electrical Equipment for Measurement, Control,
and Laboratory Use
CSA C22.2 No.231: Safety Requirements for Electrical
and Electronic Measuring and Test Equipment
UL 1244: Electrical and Electronic Measuring and Testing
Equipment
EMC Directive 89/336/EEC: Council Directive entitled
Approximation of the Laws of the Member States relating
to Electromagnetic Compatibility
EN 55011(1991) Group 1, Class B/CISPR 11 (1990):
Limits and Methods of Radio Interference Characteristics
of Industrial, Scientific, and Medical(ISM) Radio-
Frequency Equipment
EN 50082-1(1992) /
IEC 801-2(1991): Electrostatic Discharge Requirements
IEC 801-3(1984): Radiated Electromagnetic Field
Requirements
IEC 801-4(1988): Electrical Fast Transient/Burst
Requirements
INSTRUMENT AND MANUAL IDENTIFICATION
A serial number identifies your power supply. The serial num-
ber encodes the country of manufacture, the week of the lat-
est significant design change, and a unique sequential
number. The letter "KR" designates Korea as the country of
manufacture, the first one digit indicates the year (4=1994,
5=1995, and so forth), and the second two digits indicate the
week. The remaining digits of the serial number are a unique,
five-digit number assigned sequentially.
If the serial number on your supply does not agree with those
on the title page of the manual, a yellow Change Sheet is
supplied with the manual to explain the difference between
your instrument and the instrument described by this manual.
The Change Sheet may also contain information for correct-
ing errors in the manual.
OPTIONS
Options 0E3 and 0E9 determine which line voltage is
selected at the factory. The standard unit is configured for
115 Vac ± 10%, 47-63 Hz input.
Option No.
Description
0E3:
230 Vac ± 10%, 47-63 Hz Input
0E9:
100 Vac ± 10%, 47-63 Hz Input
ACCESSORY
The accessory listed below may be ordered from your local
Hewlett-Packard Sales Office either with the power supply or
separately. (Refer to the list at the rear of the manual for
address.)
HP Part No.
Description
5063-9240
Rack Kit for mounting one or two 3 1/2" high
supplies in a standard 19" rack
The rack mount kit is needed for rack mounting of the
E3620A power supply.
ORDERING ADDITIONAL MANUALS
One manual is shipped with each power supply. (Option 910
is ordered for each extra manual.) Additional manuals may
also be purchased separately for your local Hewlett-Packard
sales office (see the list at the rear of this manual for
addresses). Specify the model number, serial prefix, and the
HP Part Number provided on the title page.
SPECIFICATIONS
Instrument specifications are listed in Table 1. These specifi-
cations are performance standards or limits against which the
instrument is tested.
Summary of Contents for E3620A
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