
INSTRUCTION
MANUAL
POWER SUPPLIES
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com

TABLE O
1. SAFETY INSTRUCTIONS AND PRECAUTIONS ..................................................... 3
2. INTRODUCTION .......................................................................................................... 4
3. SPECIFICATIONS ........................................................................................................ 5
4. CONTROLS AND INDICATORS ................................................................................ 6
5. OPERATION PROCEDURES ...................................................................................... 9
Limited Warranty .................................................................................................................. 10
Service Information .............................................................................................................. 11
F CONTENTS

1. SAFETY INSTRUCTIONS
1. Do not use this apparatus near water.
2. Clean only with dry cloth.
3. Do not block any ventilation openings.
4. Do not install unit near any heat source or heating emitting devices.
5. Prevent the power cord from being walked on or pinch ed.
6. Unplug this unit during lightin g st orms or when unused for long peri ods of time.
PRECAUTIONS
1. The unit must be used within its specified range.
2
. The rated input voltages can be found on the rating label at the back the unit.
3
. Before plugging int o the AC supply, check with the rating label.
4. R
efer all servicing to manufacturer.
Model 1667 has maximum output voltage up to 60Vdc. It may be hazardous to touch metal part of the
output terminals. User must avoid touching live metal part of the output terminals.

2. INTRODUCTION
Model 1665 only: V meter max. di spl ay
These Laboratory Grade Switching DC Power Supplies were built with coarse and fine output voltage and current
limiting controls.
Current limiting control with automatic crossover of constant voltage (CV) and constant current (CC) indicators make this
series ideal for research and development work in laboratories.
Above 19.9 9 outpu t volt age, V met er di splay

3. SPECIFICATIONS
Output Voltage: I-19VDC 1-40VDC 1-60VDC
Output Voltage Control: Fine & Coarse Fine & Coarse Fine & Coarse
Output Current: 0-10A 0-5A 0-3.3A
Ripple & Noise (P-P): 20mV 20mV 20mV
Load Regulation: 0.5% + 200mV 0.5%+200mV 0.5% +200mV
Input Voltage: 100 - 240 VAC, 50Hz / 60Hz
Voltmeter Resolution: 10 mV 10 mV 10 mV
Ammeter REsolution: 10 mA 10 mA 10 mA
Voltmeter Accuracy: 1% + 2 counts
Cooling System: Thermostatic control fan
Protection Devices: Appr ovals: CE
Dimension (WxHxD): 8" x 4.5" x 11" (205 x 115 x 275 mm )
Specifications 1665 1667 1667
Line Regulation: 50mV 50mV 50mV
Ammeter Accuracy: 0.5% + 2 counts
Indicators: CC & CV
NOTE: Specifications and information are subject to change without notice. Please visit www.bkprecision.com for the most current product
information.