Circuit devices, circuit devices which include light emitting diodes, assemblies which include such circuit devices, flashlights which include such assemblies, and methods for directly replacing flashlight bulbs
First Claim
1. A circuit device for providing energy to at least one electrical component, said circuit device comprising:
- a positive contact;
a negative contact;
an inductor;
a diode having a cathode end and an anode end;
a first component contact for electrical connection to a cathode end of an electrical component;
a second component contact for electrical connection to an anode end of an electrical component;
a switch; and
a control device, a first end of said inductor being electrically connected to said positive contact;
a second end of said inductor being electrically connected to said anode end of said diode;
a first end of said switch being electrically connected to a junction between said second end of said inductor and said anode end of said diode;
a second end of said switch being electrically connected to said negative contact;
said second component contact being electrically connected to said cathode end of said diode;
said first component contact being electrically connected to a junction between said positive contact and said first end of said inductor;
said control device having a current sensing terminal and an output terminal, said current sensing terminal being electrically connected to a junction between said second end of said switch and said negative contact, said output terminal being electrically connected to said switch, said control device causing said switch to break electrical connection across said switch when voltage at said current sensing terminal exceeds a threshold value, and causing said switch to provide electrical connection across said switch after a non-conduction period has elapsed following said causing said switch to break electrical connection.
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Accused Products
Abstract
A circuit device for providing energy to at least one electrical component, such as a light emitting diode (LED). The circuit device comprises a positive contact, an inductor, a diode and a negative contact in series. A first component contact for electrical connection to a cathode end of an electrical component, a second component contact for electrical connection to an anode end of an electrical component, a switch and a control device are also included. The first component contact is electrically connected to a junction between the positive contact and one end of the inductor; and the second component contact is electrically connected to a cathode end of the diode. There are also provided a circuit device further including an LED, an assembly including a circuit device and a bulb base, a flashlight including an assembly, and a method of directly replacing a flashlight bulb.
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Citations
36 Claims
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1. A circuit device for providing energy to at least one electrical component, said circuit device comprising:
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a positive contact;
a negative contact;
an inductor;
a diode having a cathode end and an anode end;
a first component contact for electrical connection to a cathode end of an electrical component;
a second component contact for electrical connection to an anode end of an electrical component;
a switch; and
a control device, a first end of said inductor being electrically connected to said positive contact;
a second end of said inductor being electrically connected to said anode end of said diode;
a first end of said switch being electrically connected to a junction between said second end of said inductor and said anode end of said diode;
a second end of said switch being electrically connected to said negative contact;
said second component contact being electrically connected to said cathode end of said diode;
said first component contact being electrically connected to a junction between said positive contact and said first end of said inductor;
said control device having a current sensing terminal and an output terminal, said current sensing terminal being electrically connected to a junction between said second end of said switch and said negative contact, said output terminal being electrically connected to said switch, said control device causing said switch to break electrical connection across said switch when voltage at said current sensing terminal exceeds a threshold value, and causing said switch to provide electrical connection across said switch after a non-conduction period has elapsed following said causing said switch to break electrical connection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A light emitting diode-containing device comprising:
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a positive contact;
a negative contact;
an inductor;
a diode having a cathode end and an anode end;
a light emitting diode component having a cathode end and an anode end;
a switch; and
a control device, a first end of said inductor being electrically connected to said positive contact;
a second end of said inductor being electrically connected to said anode end of said diode;
a first end of said switch being electrically connected to a junction between said second end of said inductor and said anode end of said diode;
a second end of said switch being electrically connected to said negative contact;
said anode end of said light emitting diode component being electrically connected to said cathode end of said diode;
said cathode end of said light emitting diode component being electrically connected to a junction between said positive contact and said first end of said inductor;
said control device having a current sensing terminal and an output terminal, said current sensing terminal being electrically connected to a junction between said second end of said switch and said negative contact, said output terminal being electrically connected to said switch, said control device causing said switch to break electrical connection across said switch when voltage at said current sensing terminal exceeds a threshold value, and causing said switch to provide electrical connection across said switch after a non-conduction period has elapsed following said causing said switch to break electrical connection. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 36)
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31. A circuit device for providing energy to at least one electrical component, said circuit device comprising:
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a positive contact;
a negative contact;
an inductor;
a first diode having a cathode end and an anode end;
a first component contact for electrical connection to a cathode end of an electrical component;
a second component contact for electrical connection to an anode end of an electrical component;
a switch;
a control device having a current sensing terminal and an output terminal;
a current sense series resistor having a first end and a second end;
a bias resistor having a first end and a second end; and
a Zener diode having a cathode end and an anode end, a first end of said inductor being electrically connected to said positive contact;
a second end of said inductor being electrically connected to said anode end of said first diode;
a first end of said switch being electrically connected to a junction between said second end of said inductor and said anode end of said first diode;
a second end of said switch being electrically connected to said negative contact;
said second component contact being electrically connected to said cathode end of said first diode;
said first component contact being electrically connected to said negative contact;
said cathode end of said Zener diode being electrically connected to a junction between said positive contact and said first end of said inductor, said anode end of said Zener diode being electrically connected to said first end of said bias resistor, said second end of said bias resistor being electrically connected to a junction between said first end of said current sense series resistor and said current sensing terminal, said second end of said current sense series resistor being electrically connected to a junction between said second end of said switch and said negative terminal;
said output terminal being electrically connected to said switch, said control device causing said switch to break electrical connection across said switch when voltage at said current sensing terminal exceeds a threshold value, and causing said switch to provide electrical connection across said switch after a non-conduction period has elapsed following said causing said switch to break electrical connection. - View Dependent Claims (32, 33, 34, 35)
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Specification