EXTECH 382270 User Guide

User's Guide

Model 382270

High Precision Quad Output

DC Power Supply

Introduction

Congratulations on your purchase of the Extech 382270 DC Power Supply. The Model 382270 can be
used for many applications including bench testing, field service, hobby, educational, maintenance,
and telecommunication equipment use.

The Model 382270 is a high-precision DC regulated power supply with four outputs. Of which, two are
completely adjustable and two are semi-adjustable. The two adjustable outputs can be configured for
constant voltage or constant current. The two adjustable outputs can be connected in parallel or in
series. The 3 digit LED display indicates each of the two adjustable outputs.

The two semi-adjustable outputs (one is 3~6.5V/3A and the other is 8~15V/1A) have good stability and
ripple factor, and reliable overload protection to protect the unit against overloads or short circuits.

This power supply is shipped fully tested and calibrated and, with proper use, will provide years of
reliable service.

Safety Information

Safety Precautions

To ensure safe operation of the equipment and eliminate the danger of serious injury due to short­circuit (arcing), the following safety precautions must be observed.

• Prior to connection of the equipment to the mains outlet, check that the available mains
voltage corresponds to the voltage setting of the equipment.

• Connect the mains plug of the equipment only to a mains outlet with an earth ground
connection.

• Do not place the equipment on damp or wet surfaces.

• Do not subject the equipment to direct sunlight or extreme temperatures.

• Do not subject the equipment to extreme humidity or dampness

• Replace a defective fuse only with a fuse of the original rating. Never short circuit the fuse or

the fuse housing

• Do not exceed the maximum permissible input rating.

• Comply with the warning labels and other info on the equipment.

• Do not insert metal objects into the equipment by way of the ventilation slots

• Do not place water-filled containers on the equipment

• Do not operate the equipment near strong magnetic fields (motors, transformer etc.)

• Do not subject the equipment to shocks or strong vibrations

• Keep hot soldering irons away from the equipment

• Allow the equipment to stabilize at room temperature before use

• Do not modify the equipment in any way

• Do not place the equipment face-down on any surface, table or work bench

• All service and repair must be performed by qualified service personal.

Cleaning the meter housing

Prior to cleaning the meter housing, disconnect the mains plug from the power outlet. Clean only
with a damp, soft cloth and a commercially available mild household cleaner. Ensure that no water
gets inside the equipment to prevent possible shorts and damage to the equipment.

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