G - Physics – 05 – F
Patent
G - Physics
05
F
348/35
G05F 1/577 (2006.01) H02H 7/00 (2006.01) H02J 3/14 (2006.01)
Patent
CA 1280501
MULTI-TIME DELAY POWER CONTROLLER APPARATUS ABSTRACT Multi-time delay power controller apparatus for providing time-delayed power or control signals to associated electrical equipment, such as computers and disc drives, comprises a power stage configured for connecting to a conventional power outlet, a D.C. power supply connected to an interval D.C. voltage bus, an out- put stage having a plurality of time delayed outputs and a plurality of time delay timing stages connected in electrical series to one another between the D.C. voltage bus and ground. Each such timing stage includes a timing circuit, a comparator circuit and a normally open control relay. Coils of odd numbered timing stages are connected to ground and of even numbered stages to the D.C. voltage bus. The timing stages are connected so that the timing out of one stage starts the timing of the next-in-sequence stage, timing of the first-in-sequence timing stage being started when the apparatus is turned on. The control relays are actuated when a stage times out, thereby causing a time delayed control signal to be provided to the output stages. When time delayed power outputs are provided, the time delayed control signal energizes a normally open power relay which connects the associated power output to the power stage.
523216
Cook Roger
Pequet John D.
Pulizzi Michael B.
Gowling Lafleur Henderson Llp
Pulizzi Engineering Inc.
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