Powering Loads
975-0209-01-01 3–5
load until line voltage is available. When this occurs, each unit waits for the other
to begin. To drive these loads either a small companion load must be used to bring
the inverter out of its search mode, or the inverter may be programmed to remain
at full output voltage. See “Search Mode” on page 3–2.
Microwave ovens Microwave ovens are sensitive to peak output voltage. The
higher the voltage, the faster they cook. Inverter peak output voltage is dependent
on battery voltage and load size. The high power demanded by a full-sized
microwave will drop the peak voltage several volts due to internal losses.
Therefore, the time needed to cook food will be increased if battery voltage is low.
Printers Most inkjet printers work well in inverter applications. Laser printers,
however, require high current for their fusing circuit and are not recommended for
use with an inverter.
Clocks The inverter’s crystal-controlled oscillator keeps the frequency accurate
to within a few seconds a day. However, external loads in the system may alter the
inverter’s output waveform, causing clocks to run at different speeds. This may
result in periods during which clocks keep time and then mysteriously do not.
Most clocks do not draw enough power to trigger the load-sensing circuit. In order
to operate without other loads present, the load sensing will have to be defeated.
(See “Search Mode” on page 3–2.) Clock accuracy is also affected by the
accuracy of the generator.
Dimmer Switches Most dimmer switches lose their ability to dim the lights and
operate either fully on or off.
Rechargeable Devices When first using a rechargeable device, monitor its
temperature for 10 minutes to ensure that it does not become abnormally hot.
Excessive heat will indicate that it is incompatible with the inverter.
Electronics AM radios will pick up noise, especially on the lower half of their
band. Inexpensive tape recorders are likely to pick up a buzz. Large loads should
not be started while a computer is operating off the inverter. If a load is large
enough to require “soft starting” it will “crash” the computer, causing it to reboot.
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