Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
1992-04-03
1994-06-28
Pellinen, A. D.
Electrical transmission or interconnection systems
Switching systems
Condition responsive
307 46, 307 87, 361187, H01H 4732, H02H 312, H02J 332
Patent
active
053249909
ABSTRACT:
A power conservation circuit for a battery-powered voltage inverter is capable of conserving battery power. In a first embodiment, the circuit includes a switch, connected between the input terminals and the output terminals, for switching the circuit between an ON state wherein AC voltage is connected to the output terminals, and an OFF state wherein the inverter is disconnected from the battery. A first sensor senses in the ON state the absence of a load connected to the output terminals and switches the circuit from the ON state to the OFF state. A second sensor senses in the OFF state the presence of a load connected to the output terminals and switches the circuit from the OFF state to the ON state. The switch includes a relay having a pole terminal connected to the output terminals, a first contact terminal connected to the AC output of the inverter, and a second contact terminal connected to battery voltage. In a second embodiment, in an OFF state, the switch connects to the output terminals an AC signal voltage having a frequency measurably different from the frequency of the AC voltage from the inverter. In a third embodiment, the switch switches the base of an inverter power transistor. In a fourth embodiment, the voltage inverter includes a plurality of switched voltage inverter modules.
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Replacement Parts List for the Tripp Lite 200 Volt Inverter.
"Dimensions Unlimited Brochure" Dimensions Unlimited, Inc. (1990).
Elms Richard T.
Pellinen A. D.
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