Extech Extech 382200 Manual

99 Washington Street
Melrose, MA 02176

Phone [phone]
Toll Free 1-800-517-8431

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User's Manual

DC Regulated Power Supplies

Models 382200 (1Amp) and 382202 (3Amp)

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX [phone] - TestEquipmentDepot.com

Introduction

Congratulations on your purchase of the Extech DC Regulated Power Supply. These
units are solid state, compact, regulated supplies suitable for many applications
including bench testing, field service, hobby and telecommunication equipment use. This
meter is shipped fully tested and calibrated and, with proper use, will provide years of
reliable service.

Specifications

Model 382200 382202
Display Dual LCD
Display Accuracy (V) ±(1.5%rdg +5D)
Display Accuracy (A) ±(2.0%rdg + 5D)
Voltage Output, DC 30.0 Volts 18.0 Volts
Current Output, DC 0 – 1.00 Amp 0 – 3.00 Amps
Ripple and Noise <0.5mV/<3mA
Line Regulation < 0.01% + 3mV/< 0.2% + 3mA
Load Regulation < 0.01% + 2mV/< 0.2% + 3mA
Power 110/220VAC (50/60Hz)
Dimensions 9.4 x 4.25 x 6" (240 x 108 x 154mm) (WxHxD)
Weight 4.4lbs. (2 kg) 6.6lbs. (3kg)

Meter Description

1. Voltage display

2. Current display

3. Negative (-) output terminal

4. Positive (+) output terminal

5. Illuminated On/Off switch

6. Current adjustment

7. Voltage adjustment

1

2

4

2 382200 and 382202 V3.0 01/06

3

7

6

5

Operation

CAUTION: Verify that the AC voltage setting matches your power source
BEFORE applying power to the instruments. Do not connect to a voltage
source that is greater.

CAUTION: Limit full load operation (>25watts for the 382200 and >45watts for
the 382202) to 15 minutes continuous operation. Always allow a cool down
period after full load operation.

1. The Power Supply must be powered using the rated line voltage within +

2. Before turning the power supply ON, remove any load and set the Voltage and
Current Adjustment Knobs to their full counter-clockwise positions.

3. Use the Current and Voltage Adjustment knobs for setting variable Current and
Voltage output signals respectively.

4. The LCD displays will indicate actual current and voltage outputs.

5. Keep the meter's cooling vents (top and sides) clear of obstacles to prevent
overheating.

Current Limit

To avoid having the load draw too much current, a current limit can be set as follows:
With the voltage and current output adjustments set fully off, carefully short the positive
and negative output terminals together. Turn the Output Voltage knob clockwise to the
25% position (approx). Adjust the Output Current knob clockwise until the desired
current level is displayed. Turn the Output Voltage knob counter-clockwise (current
display will go to 0.00). Connect a load to the output terminals and adjust the voltage to
the desired level.

10%.

3 382200 and 382202 V3.0 01/06

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX [phone] - TestEquipmentDepot.com