Electrical transmission or interconnection systems – Switching systems – Switch actuation
Patent
1985-04-04
1987-02-10
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Switching systems
Switch actuation
3071414, 307126, 361 89, 361 91, 333 24R, H01H 700
Patent
active
046424792
ABSTRACT:
A power distribution device having a first input that can be operably connected to a power source, a second input that can be operably connected to an operator controlled switch, and an output for connection to peripheral devices to be powered. The device further includes a first comparator unit for sensing when the operator controlled switch has been closed and for providing an output signal in response thereto, and a second comparator unit that can respond to the output signal created by the first comparator unit to provide a control signal. A power switch unit responds to the control signal and can connect and disconnect the output of the device to the power source input. A delay unit serves to delay the response of the second comparator unit to a change in the output signal state of the first comparator unit. Over voltage protection circuitry protects the circuit and the peripheral devices to be powered from an over voltage supply at the power source input, and reverse voltage protection circuitry protects both the device and the peripheral devices to be powered from a reverse biased power source.
REFERENCES:
patent: 3814948 (1974-06-01), Schuchmann et al.
patent: 4339696 (1982-07-01), Jabor
patent: 4429339 (1984-01-01), Jaeschke et al.
patent: 4462069 (1984-07-01), Becky
patent: 4520419 (1985-05-01), Locher et al.
Lombardi Steven A.
Potter David O.
Logan Sharon D.
Motorola Inc.
Parmelee Steven G.
Shoop Jr. William M.
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