User guide

3-14 V DC Power Supply
Model 1686A
Data Sheet
www.bkprecision.com
Technical data subject to change
© B&K Precision Corp. 2014
v050114
Features & Benefits
■ 3 V to 14 V variable output
■ 12 A output at 13.8 V*
■ Thermostatically controlled cooling fan
■ Continuous operation at full load without
overheating
■ Connect two or more units in parallel or series
for higher current or voltage
■ Convenient 2 A tie point terminals on front
panel
■ Overvoltage protection, foldback current
limiting, and reverse polarity protection
Specifications 1686A
O
utput
Voltage 3 - 14 V
Current (Proportional to Output Voltage) *12 A (at 13.8 V)
Load Regulation ≤ 0.8%
Line Regulation (108-132V AC) ≤ 0.8%
Ripple and Noise ≤ 10 mVrms
Metering
Voltmeter Range 0-20 V
Voltmeter Accuracy ±7% F.S.
Ammeter Range 0-20 A
Ammeter Accuracy ±7% F.S.
General
AC Input 115/230 VAC ±10%, 50/60 Hz
Power Consumption 400 W
Operating Temperature 32˚ to 104˚F (0˚ to 40˚C), ≤ 85% R.H.
Storage Temperature 5˚ to 158˚F (-15˚ to 70˚C), ≤ 75% R.H.
Dimensions (HxWxD) 4.9” x 8.5” x 11.5" (124 x 216 x 292 mm)
Weight 12.1 lbs (5.45 kg)
One-Year Warranty
Included Accessories Instruction Manual, Line Cord, Spare Fuse
Model 1686A is a high quality 3 to 14 V bench DC power supply primarily designed for powering
automotive and marine electronic equipment. It has a maximum output current proportional to the voltage
setting (see voltage and current output graph) and two panel mounted meters that continuously monitor
the output voltage and current.
Designed for continuous duty without overheating, this 12 A DC power supply is an ideal car battery
substitution allowing servicing or powering of mostly any car radio, car stereo, PA systems, low to medium
power CB transceivers, or marine equipment. The 1686A uses thermostatically controlled fan cooling for
improved heat dissipation while keeping bulk and weight to a minimum.
Model 1686A
Graph showing relationship between
output voltage and output current
024 6810 12 14 16
Output Voltage (V)
Output Current (A)
20
15
10
5
0
* see graph for output current and output voltage
Output Voltage and Current