Sequential power-up circuit

Patent · Wed Jan 01 00:00:00 EST 1992

OSTI ID:868327

Kronberg, James W ^[1]

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1. 108 Independent Blvd., Aiken, SC 29801

A sequential power-up circuit for starting several electrical load elements in series to avoid excessive current surge, comprising a voltage ramp generator and a set of voltage comparators, each comparator having a different reference voltage and interfacing with a switch that is capable of turning on one of the load elements. As the voltage rises, it passes the reference voltages one at a time and causes the switch corresponding to that voltage to turn on its load element. The ramp is turned on and off by a single switch or by a logic-level electrical signal. The ramp rate for turning on the load element is relatively slow and the rate for turning the elements off is relatively fast. Optionally, the duration of each interval of time between the turning on of the load elements is programmable.

• Research Organization: Savannah River Site (SRS), Aiken, SC (United States)
• DOE Contract Number: AC09-89SR18035
• Assignee: Kronberg, James W. (108 Independent Blvd., Aiken, SC 29801)
• Patent Number(s): US 5119014
• OSTI ID: 868327
• Country of Publication: United States
• Language: English

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power-up
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starting
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surge
comprising
voltage
ramp
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set
comparators
comparator
reference
interfacing
switch
capable
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passes
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relatively
slow
fast
optionally
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interval
programmable
electrical signal
reference voltage
electrical load
ramp rate
relatively slow
ramp generator
voltage ramp
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load element
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