BK Precision 1686A Power supply
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3 to 14 VOLT DC POWER SUPPLY
The B+K Precision Model 1686 is a high quality 3 to 14 Volt
DC Power supply
primarily designed for bench powering of
automotive and marine electronic equipment. The Model 1686
has a maximum output current proportional to the voltage
setting, the maximum current of 12 amps available from 13.8
to 14 volts and is reduced to 2.5 amps at 3 volts. Two panel
mounted meters continuously monitor the output voltage and
The 12-amp output of the Model 1686 Power supply
bench powering of most any car radio, sound system
(including most “high- power” car stereo
receiver/amplifiers), tape systems, PA systems, and
low-to-medium power 2-way radios, such as CB transceivers,
VHF/UHF commercial equipment, marine, car telephone, and
The Power supply
utilizes thermostatically controlled fan
cooling for improved heat dissipation and reliability while
keeping bulk and weight to a minimum.
Foldback current limiting protects the Power supply
accidental short circuits and overload conditions. The
output is isolated from chassis and earth ground, permitting
full flexibility of connections. When desired, the positive
(+) or negative (-) polarity outputs may be strapped to
ground, allowing use with negative-ground and
positive-ground automotive equipment.
Advanced design, quality, and sturdy construction of the
Model 1686 assures continued reliability. To gain the most
effective use of this instrument, we recommend that you
study the entire manual before operating the Power supply
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24 January 2017