Audiovox 1286492 User Manual

ADC700
POWER INVERTER

Owner’s Manual

TABLE OF CONTENTS

1. INTRODUCTION ............................................................................3

2. HOW YOUR AUDIOVOX ADC700 WORKS ................................. 4

Operation ....................................................................................4

Audiovox ADC700 Output Waveform...................................... 5

3. INSTALLA TION...............................................................................6

Power Source Requirements................................................. 6

Connection to Power Source .....................................................7

Connection to Load ............................................................... 7

Fuse Replacement..................................................................8

Placement of the ADC700..........................................................9

4. OPERATING TIPS..........................................................................10

Rated Versus Actual Current Draw of Equipment .....................10

Battery Operating Time ..............................................................11

5.TROUBLESHOOTING ....................................................................11

Protective Features of the ADC700...........................................11

Common Problems.....................................................................12

Troubleshooting Guide ...............................................................13

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1. INTRODUCTION

Y our new Audiovox ADC700 inverter is one in a series of the most advanced
DC to AC inverters available today. With proper care and appropriate us­age, it will give you years of dependable service in your car, truck, RV, boat
or even airplane.

The ADC700 supplies 700 Watts of continuous power, with a 1400 Watt
peak, in the form of a household-type outlet that is ready to deliver 110-volt
AC power whenever and wherever you need it! Simply connect the inverter
to the vehicle battery to run almost any small household or electronic appli­ance including: color TVs (up to 21"); VCRs; portable radios/boom boxes;
laptop computers; camcorder, cellular phone and power tool chargers; lamps
(up to 700 watts); light duty power tools (up to 1.75A); and many more. The
ADC700 AC receptacle is fully polarized, weatherproof and fused. Added
safety features include automatic
prevent damage to your battery.

To ensure a long duration of reliable service, your power inverter must be
installed and used properly. Please read the installation and operating in­structions thoroughly prior to installation and use. Pay particular attention to
the CAUTION and WARNING statements in this manual. The CAUTION
statements advise against certain conditions and practices that may result
in damage to your ADC700. The WARNING statements identify conditions
or practices that may result in personal injury or loss of life.

shutdown

and a low battery alarm to

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2. HOW YOUR AUDIOVOX ADC700 INVERTER WORKS

The ADC700 inverter is an electronic device that converts low voltage DC
(direct current) electricity from a battery or other power source to standard
115 volt AC (alternating current) household power . In designing the ADC700,
Audiovox has incorporated design techniques previously employed in com­puter power supplies. The result of these design innovations is a smaller,
lighter and easier-to-use power inverter.

OPERATION

The ADC700 inverter converts power in two stages. The first stage is a
DC-to-DC conversion process that raises the low voltage DC at the inverter
input to 145 volts DC. The second stage is the actual inverter stage that
converts the high voltage DC into 115 volts, 60 Hz AC.

The DC-to-DC converter stage uses modern high frequency power conver­sion techniques that have replaced the bulky transformers found in less
technologically-advanced models. The inverter stage uses advanced power
MOSFET transistors in a full bridge configuration. This ensures excellent
overload capability and the ability to operate reactive loads like lamp bal­lasts and small induction motors.

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Figure 1. Audiovox ADC700 Inverter Operation

ADC700

The AC output waveform of the ADC700 is known as a “quasi-sine wave” or
a “modified sine wave”. It is a stepped waveform that is designed to have
characteristics similar to the sine wave shape of utility power. This type of
waveform is suitable for most AC loads, including linear and switching power
supplies used in electronic equipment, transformers, and motors.

The modified sine wave produced by the ADC700 inverter is designed to
have an RMS (root mean square) voltage of 115 volts, which is the same as
standard household power. Most AC voltmeters (both digital and analog) are
sensitive to the average value of the waveform rather than the RMS value.
They are calibrated for RMS voltage under the assumption that the wave­form measured will be a pure sine wave. These meters will not read the RMS
voltage of a modified sine wave correctly. They will read about 20 to 30 volts
low when measuring the output of the ADC700. For accurate measurement
of the output voltage of this unit, use a true RMS reading voltmeter such as a
Fluke 87, Fluke 8060A, Beckman 4410, or a Triplett 4200.

Output Waveform

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