Sima Products STP-1000T - Manual (Page 12)

How the Inverter Works
The Sima Products Corporation power inverter has two electronic sections. The first section converts
12 volts DC to approximately 160 volts DC using modern high frequency conversion techniques that
uses small lightweight efficient transformers. The second section converts the 160 volts DC to 115
VAC using high efficiency power MOSFET transistor devices. The inverters generate a modified sine
wave that works with almost every product on the market.
CAUTION: Do not use the following products with an inverter with a modified sine
wave output.
„ Small battery operated devices like razors, flashlights and night lights that can be
plugged directly into an AC outlet to recharge
„ A few battery chargers for power tool battery packs that have warnings about high
voltage present on the battery terminals.
Smooth Start
The Smooth Start feature of the STP line of power inverters is designed to handle the power surge that
is created when some appliances are turned on. This feature helps protect both the appliance and the
inverter from excessive power draws and surges.
When the power switch is turned on, the STP inverter smoothly brings up the AC power. This circuitry
also activates under excessive loads, even short circuits, to quickly turn off power to protect the device
and the inverter. The STP inverter then attempts to smoothly bring up the AC power, unless it detects
an excessive load.
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