Sinusoidal inductorless dimmer applying variable frequency power signal in response to user command
First Claim
1. A control device responsive to a user command and applying a selected magnitude energy to a load, the control device comprising:
- a control receiving said user command as a command value;
a gate signal generator receiving said command value and producing a gate signal maintained given at a frequency corresponding to said command value; and
a gating device receiving said gate signal and a sinusoidal power source whereby said gating device applies said selected magnitude energy to said load at said frequency, said frequency being at least greater than twice the frequency of said sinusoidal power source.
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Accused Products
Abstract
A control service delivers controlled magnitude energy from a sinusoidal power source in the form of a sequence of pulses conforming to the sinusoidal envelope. A gate signal operated at a selected frequency applies gating pulses to a gating device receiving the sinusoidal power signal and applying its output to a load. The load receives, at high gate signal frequencies, substantially all energy presented in the power signal and, at lower gate signal frequencies, a selected magnitude energy taken from the sinusoidal power signal. The power applied to the load does not produce undesirable noise or radio frequency interference and does not require use of an expensive, heavy and volumous choke or inductor.
109 Citations
10 Claims
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1. A control device responsive to a user command and applying a selected magnitude energy to a load, the control device comprising:
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a control receiving said user command as a command value; a gate signal generator receiving said command value and producing a gate signal maintained given at a frequency corresponding to said command value; and a gating device receiving said gate signal and a sinusoidal power source whereby said gating device applies said selected magnitude energy to said load at said frequency, said frequency being at least greater than twice the frequency of said sinusoidal power source. - View Dependent Claims (2, 3, 4)
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5. A method of delivering a controlled magnitude energy to a load in response to a user command, said method comprising the steps:
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receiving a sinusoidal power signal having a first given frequency; receiving said user command as a command value representing a desired output power level; producing a gate signal having a second given frequency maintained as a function of said desired output power level; and applying said gate signal to a gating device receiving said sinusoidal power signal and passing said power signal to said load during an on time of said gate signal. - View Dependent Claims (6, 7, 8)
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9. A control device applying a selected magnitude power level to a load in response to a user command, the control device comprising:
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a dimming command receiving device collecting said user command as a dimming command and producing a gate signal, said gate signal including alternating on portions and off portions, said on portions occurring at a given frequency maintained to said dimming command; and a gating device receiving a sinusoidal power signal and said gate signal, said gating device being coupled to said load, said gating device applying said sinusoidal power signal to said load during said on portions of said gate signal. - View Dependent Claims (10)
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Specification
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- Resources
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Current AssigneeElectronics Diversified, LLC
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Original AssigneeElectronics Diversified, Inc.
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InventorsFolsom, Thomas L., Allison, Greg R., Christensen, James D.
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Primary Examiner(s)Pascal, Robert
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Assistant Examiner(s)Philogene, Haissa
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Application NumberUS08/340,756Time in Patent Office650 DaysField of Search315/294, 315/295, 315/312, 315/317, 315/307, 315/362, 315/DIG. 4, 315/194, 315/209 R, 323/322, 323/242US Class Current315/294CPC Class CodesH05B 39/083 by the variation-rate of li...H05B 47/18 via data-bus transmissionY10S 315/04 Dimming circuit for fluores...
