FURMAN AR-1215 Voltage Regulator
DESCRIPTION
The 15 amp
AR-1215 AC Line Voltage Regulator is intended±5V. Voltages beyond that range±0.15%. If a voltage fluctuation requires
to protect audio, video, computer and other electronic equipment
from problems caused by AC line voltage irregularities—sags,
brownouts, or overvoltages that can cause sensitive digital
equipment to malfunction, or, in extreme cases, to sustain
damage.
The AR-1215 is designed to provide a steady, stable 120 VAC
output. It accepts any input voltage from 97V to 141V and
transforms it to a constant 120V,
may also be converted to usable levels, depending on how far out
of range they are. The AR-1215 can handle loads totaling up to
15 amps as long as the input voltage is above 124 volts. For
voltages below that level, its capacity must be derated at
approximately .15 ampere per volt.
The AR-1215 has been designed specifically with the unique
needs of audio and video in mind. Its technology differs from that
of computer-oriented voltage regulators in many important ways.
For example:
The AR-1215 does not use a ferro-resonant transformer,
which would be heavy and bulky, radiate a large magnetic field,
and be too frequency-sensitive to be usable with generators.
Instead, it uses a use a design based on an eight-tap toroidal
autoformer. The toroidal design assures minimal leakage of stray
magnetic fields.
The AR-1215 circuitry monitors the incoming line voltage with
each cycle, comparing it to an extremely precise voltage
reference, accurate to
that a different tap be selected, the new tap is electronically
switched exactly at the zero-crossing, to avoid distorting the AC
waveform. (Most commercial voltage regulators using multipletapped
transformers switch taps at uncontrolled times, thereby
creating voltage spikes, and often creating clicks that can leak
into the audio.) Hysteresis of 1.5V in the switching circuits avoids
“chatter.” The design is not sensitive to small errors in line
frequency, making them ideal for use with generators.
The AR-1215 also features power conditioning that is truly in a
class by itself, thanks to the quantity, quality and configuration of
the overvoltage suppression devices used. These include MOV’s
and high voltage inductors and capacitors. This unique
combination can safely divert large spikes as well as filter audible
high frequency noise.
An additional feature, Extreme Voltage Shutdown, senses
dangerously high or low voltages and shuts down the output
before any damage is done. The output remains off until the
overvoltage
AR-1215 FEATURES
- Delivers a stable 120 ±5 VAC whenever the input AC line voltage is between 97V and 141V
- Eight outlets on the back panel, one on the front
- Output capacity 15 amps
- Eight-tap toroidal autoformer
- 10-LED bar-graph Input Voltage meter
- Extreme overvoltage/undervoltage causes instant shut down, protecting equipment
- Extreme Voltage Shutdown indicator LED
- Output In Regulation indicator
- Low stray magnetic field leakage
