The inverter converts the DC voltage of the battery to 120V, 60 Hz. AC voltage.
The voltage conversion takes place in two stages. In the first stage, the DC voltage of the
battery is converted to a high voltage DC using high frequency switching and Pulse Width
Modulation (PWM) technique. In the second stage, the high voltage DC is converted to
120V, 60Hz. sine-wave AC again using PWM technique. This is done by using a special
wave shaping technique where the high voltage DC is switched at a high frequency and
the pulse width of this switching is modulated with respect to a reference sine-wave.
LAYOUT
CAUTION!
Reverse polarity of input connection will blow the fuse inside the inverter and may cause
permanent damage. Ensure that the cigar lighter socket used for powering the inverter
has the correct polarity with respect to the cigar lighter plug’s, po) & negative(-)
contact points. The contact at the tip of the cigar lighter plug is po) and the two
spring loaded bow type contacts on the sides are negative(-).
Damage due to reverse
polarity is not coverd by warranty.
PRINCIPLE OF OPERATION
page 12
1 230 V, European AC output receptacle
2 Power on/off Switch
3 Green L.E.D. - Power output status
4 Red L.E.D. - Overload
5 Red L.E.D. - Over temperature
6 Input terminals (back of the unit - not shown
RED-Positive (+)
BLACK or WHITE - Negative(-)
7 Two Cooling fan (back of the unit - not shown)
8 Grounding lug (back of the unit - not shown)
9 Modular jack for optional Remote Control
(on the bottom of PST-100S)
PST 100S PST 150S/200S
