EXTECH 382203

User's Manual
Three Output DC Regulated Power Supplies
Models 382203 (Analog) and 382213 (Digital)
EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects
in parts and workmanship for one year from date of shipment (a six month limited
warranty applies on sensors and cables). If it should become necessary to return the
instrument for service during or beyond the warranty period, contact the Customer
Service Department at (781) 890-7440 for authorization. A Return Authorization (RA)
number must be issued before any product is returned to Extech. The sender is
responsible for shipping charges, freight, insurance and proper packaging to prevent
damage in transit. This warranty does not apply to defects resulting from action of the
user such as misuse, improper wiring, operation outside of specification, improper
maintenance or repair, or unauthorized modification. Extech specifically disclaims any
implied warranties or merchantability or fitness for a specific purpose and will not be
liable for any direct, indirect, incidental or consequential damages. Extech's total liability
is limited to repair or replacement of the product. The warranty set forth above is
inclusive and no other warranty, whether written or oral, is expressed or implied.
Congratulations on selecting Extech's Model 382203 (analog) or 382213 (digital)
Regulated DC Power Supply. The 382203 and 382213 are solid state, compact, well
regulated supplies suitable for many applications including bench testing, field service,
hobby and telecommunication equipment use.
Dual Analog Metering
Dual 3-digit LCD Displays
Voltage Output, DC
Current Output, DC
0 - 3 Amps
Current Limiting Indicator
Status LED
± 7% Full Scale
Ripple and Noise
< 5mV
Line Regulation
Fixed Output Voltage
± 1% Full Scale + 2 digits
< 0.05% + 10mV
5V / 0.5A (continuous); 1A (max.)
12V / 0.5A (continuous); 1A (max.)
110/220VAC 50/60Hz (switchable)
6 x 5.6 x 9.5" (152 x 142 x 242mm) (WxHxD)
10 lbs. (4.5 kgs)
Meter Description
1. Voltage and Current LCD displays
2. Current limit status LED
3. Power switch with status LED
4. 5V & 12V fixed output terminals
5. Output terminals for variable supply
6. Variable voltage and current adjustment knobs
Note: The Model 382213 (LCD metering) is shown above. The Model 382203 (shown on
the cover page) uses analog metering.
1. The Power Supply must be powered using the rated line voltage (110V or 220V) within
+ 5%.
2. Before turning the power supply ON, remove all connected loads and set the Voltage
Adjustment Knob to the full counter-clockwise position (0V DC output).
3. To operate the power supply as a constant current supply, the current output should be
set between 10% and 100% of the rated value (3A). The Current Limiting Indicator will
light when the current limiting circuit is activated.
4. Use the Current and Voltage Adjustment knobs for setting variable Current and Voltage
output signals respectively. Use Variable Output Terminals for connections.
5. For 5VDC and 12VDC outputs, use the Fixed Output Terminals.
6. The analog or digital displays will indicate actual current and voltage outputs.
7. Keep the meter's cooling vents (top and sides) clear of obstacles to prevent
Calibration and Repair Services
Extech offers complete repair and calibration services for all of the products we sell.
For periodic calibration, NIST certification or repair of any Extech product, call customer
service for details on services available. Extech recommends that calibration be
performed on an annual basis to insure calibration integrity.
Support Hotline (781) 890-7440
Tech support: Ext. 200; Email: [email protected]
Repair/Returns: Ext. 210; Email: [email protected]
Website: www.extech.com
Copyright © 2002 Extech Instruments Corporation. All rights reserved including the
right of reproduction in whole or in part in any form.
Version 1.6
31 July 2002