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US 7,148,738 B2Granted
Systems, devices, and methods for providing control signals
AssigneeSiemens Energy & Automation, Inc.
InventorsJames Allen Knoop, Alan D. McNutt
Life of this patent
Estimating the term…
Abstract
Certain exemplary embodiments comprise a system, comprising: an electrical isolator adapted to couple a processor of a programmable logic controller to a user load; a transistor adapted to provide switching of a control signal provided by the processor for the user load; a totem pole output coupling the electrical isolator and the transistor and adapted to switch a gate of the transistor; and a power supply adapted to provide a floating regulated DC voltage to the gate of the transistor.
Claims23
A system, comprising:
- an electrical isolator adapted to couple a processor of a programmable logic controller to a user load;
- a transistor adapted to provide switching of a control signal provided by the processor for the user load, the control signal comprising a series of pulses having a frequency of greater than approximately 21,000 pulses per second;
- a totem pole output coupling the electrical isolator and the transistor and adapted to switch a gate of the transistor;
- and
- a power supply adapted to provide a regulated DC voltage to the gate of the transistor, the regulated DC voltage referenced to a reference pin of the transistor, a high side of the transistor referenced to a high side of the user load power supply, the user load power supply operable from less than approximately 6 volts to greater than approximately 23 volts.
2 more elements
Dependencies are inferred from the claim text.