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INTRODUCTION

The 

B+K  Precision

  Model  1670A  is  a  general  purpose  triple 

output DC power supply. Their main outputs are versatile constant 
voltage or constant current regulated power source that is variable 
from  0  to  30  volts  and  0  to  3  amps.  An  indicator  lights  in  the 
constant current mode, and serves as an overload indicator in the 
constant voltage mode.

While  this  model  is  competitively  priced  with  most  single 

output  power  supplies,  they  have  the  added  advantage  of  fixed  5 
volt and 12 volt outputs capable of providing up to 0.5 amps each. 
One  common  application  for  these  power  supply  is  powering  of 
circuit  boards  while  troubleshooting.  Many  circuit  boards  require 
two or three input voltages, with the most common values being 5 
volts  and  12  volts. These  power  supplies  can  provide  up  to  three 
outputs  simultaneously.  Since  each  output  is  fully  isolated,  any 
output can be connected for positive or negative polarity. 

The  main  output  voltage  and  current  are  continuously 

monitored  by  two  digital  LCD  meters  with  resolution  of  0.1  volt 
and 0.01 amp.

The  Model  1670A  can  operate  continuously  at  its  maximum 

rated output and is fully overload protected.

This  manual  provides  the  information  to  help  assure  the 

maximum performance and longest life for your power supply.

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www.calcert.com

[email protected]

1.800.544.2843

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Summary of Contents for 1670A

Page 1: ...INSTRUCTION MANUAL MODEL 1670A INSTRUCTION MANUAL MODEL 1670A Triple Output DC POWER SUPPLY www calcert com sales calcert com 1 800 544 2843 0 5 10 15 20 25 30...

Page 2: ...long after the equipment is turned off 2 Use only a polarized 3 wire ac outlet This assures that the power supply chassis case and ground terminal are connected to a good earth ground and reduces dang...

Page 3: ...t 7 Typical Constant Voltage Output 8 Setting Current Limit 8 Typical Constant Current Operation 8 Page Constant Voltage Current Characteristics 9 12 Vdc Output 9 5 Vdc Output 10 Dual or Triple Output...

Page 4: ...r these power supply is powering of circuit boards while troubleshooting Many circuit boards require two or three input voltages with the most common values being 5 volts and 12 volts These power supp...

Page 5: ...05 10 mV RIPPLE AND NOISE 5 mV rms CONSTANT CURRENT MODE LOAD REGULATION 0 4 10 mA LINE REGULATION 108 TO 132 VAC 0 4 10 mA RIPPLE AND NOISE 10 mA rms PROTECTION Current limiting short circuit protect...

Page 6: ...ECTION Short circuit protection thermal overload protection OUTPUT NO 3 VOLTAGE Fixed 5 VDC 5 CURRENT 0 to 500 mA continuous POLARITY Positive or Negative CONNECTORS Wire Clips LOAD REGULATION no load...

Page 7: ...ltage DIMENSIONS H x W x D 4 9 x 8 5 x 9 5 124 x 216 x 242mm WEIGHT approx 10 lbs 4 5 kg ACCESSORIES SUPPLIED Instruction Manual Spare fuse OPTIONAL ACCESSORIES Power Supply Hook up Cables Model TL 5A...

Page 8: ...A Meter Indicates output current of variable supply 7 V Meter Indicates output voltage of variable supply 8 OUTPUT Terminal Red Positive polarity output terminal 9 OUTPUT Terminal Black Negative polar...

Page 9: ...CONTROLS AND INDICATORS 14 15 16 Figure 1 Front Panel Controls and Indicators Model 1670A Figure 2 Rear Panel Model 1670A 6 www calcert com sales calcert com 1 800 544 2843 0 5 10 15 20 25 30...

Page 10: ...lly a two inch space at the sides as well as a six inch space at the top and rear of the power supply is adequate DO NOT block the fan opening at the rear of the power supply or the vent on top of the...

Page 11: ...he output current Setting Current Limit 1 Determine the maximum safe current for the device to be powered 2 Rotate the VOLTAGE control away from zero until some low voltage under 1 volt is indicated 3...

Page 12: ...the point where the preset current limit is reached At that point the output current becomes constant and the output voltage drops in proportion to further increases in load The crossover point is ind...

Page 13: ...ound and each other thus each output may be connected for the either positive or negative polarity A typical example of a triple output application would be powering a circuit board that requires thre...

Page 14: ...xample of Triple Output Hook up for 5V 12V and 12V Figure 5 Connecting Outputs in Series for Variable 17 to 47 volt output OPERATING INSTRUCTIONS www calcert com sales calcert com 1 800 544 2843 0 5 1...

Page 15: ...e of the correct rating The fuse is located on the rear panel see Fig 2 LINE VOLTAGE 115V 230V FUSE VALUE F3AL250V F1 6AL250V INSTRUMENT REPAIR SERVICE Because of the specialized skills and test equip...

Page 16: ...the device Customers not on open account must include payment in the form of a money order or credit card For the most current repair charges please visit and click on service repair Return all merch...

Page 17: ...ng a warranty registration form online at within fifteen 15 days of purchase Exclusions This warranty does not apply in the event of misuse or abuse of the product or as a result of unauthorized alter...

Page 18: ...t is connected to an ac outlet even if the equipment is turned off 7 B K Precision products are not authorized for use in any application involving direct contact between our product and the human bod...

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