Voltage adapter systems for use in an appliance
First Claim
1. A voltage adapter system for use in an appliance, the voltage adapter system comprising:
- a TRIAC;
a switching element configured to connect the TRIAC in series with a load of the appliance when a voltage detection circuit detects an input voltage of an alternating current power signal is greater than a threshold voltage; and
a firing angle control circuit configured to provide a gate signal to a gate of the TRIAC when the alternating current power signal reaches a phase angle;
wherein the firing angle control circuit comprises;
a resistor providing a resistance;
a capacitor providing a capacitance, wherein the capacitor is located in series with the resistor and downstream a path of current flow with respect to the resistor; and
a DIAC connected between the first resistor, the first capacitor, and the gate of the TRIAC;
wherein the resistor and the capacitor are connected in parallel with the TRIAC.
2 Assignments
0 Petitions
Accused Products
Abstract
Voltage adapter systems for use in an appliance are provided. An exemplary voltage adapter system can include a TRIAC. The exemplary voltage adapter system can include a voltage detection circuit configured to detect an input voltage of an alternating current power signal and connect the TRIAC in series with a load of the appliance when the input voltage is greater than a threshold voltage. The exemplary voltage adapter system can include a firing angle control circuit configured to provide a gate signal to a gate of the TRIAC when the alternating current power signal reaches a phase angle. An exemplary firing angle control circuit can include a resistor, a capacitor, and a DIAC. The exemplary firing angle control circuit can be configured to trigger the TRIAC when the voltage across the capacitor exceeds a breakover voltage associated with the DIAC.
8 Citations
17 Claims
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1. A voltage adapter system for use in an appliance, the voltage adapter system comprising:
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a TRIAC; a switching element configured to connect the TRIAC in series with a load of the appliance when a voltage detection circuit detects an input voltage of an alternating current power signal is greater than a threshold voltage; and a firing angle control circuit configured to provide a gate signal to a gate of the TRIAC when the alternating current power signal reaches a phase angle; wherein the firing angle control circuit comprises; a resistor providing a resistance; a capacitor providing a capacitance, wherein the capacitor is located in series with the resistor and downstream a path of current flow with respect to the resistor; and a DIAC connected between the first resistor, the first capacitor, and the gate of the TRIAC; wherein the resistor and the capacitor are connected in parallel with the TRIAC. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A voltage adapter circuit comprising:
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a TRIAC positioned in series with a load of a device; a firing angle control circuit, the firing angle control circuit comprising; one or more resistors providing a variable resistance; a capacitor in series with the one or more resistors and downstream a path of current flow with respect to the one or more resistors, wherein the one or more resistors and the capacitor are in parallel with the TRIAC; and a DIAC connected between the one or more resistors, the capacitor, and a gate of the TRIAC; and a resistance control circuit configured to adjust the variable resistance based on one or more operational characteristics associated with the device; wherein the firing angle control circuit is configured to provide a gate signal to the gate of the TRIAC when a voltage across the capacitor exceeds a breakover voltage associated with the DIAC; wherein the one or more operational characteristics associated with the device comprises a load character associated with the load of the device. - View Dependent Claims (13, 14, 15, 16)
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17. An appliance capable of operating using alternating current power at a plurality of different input voltages, the appliance comprising:
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a load; a TRIAC selectably connectable in series with the load; a firing angle control circuit configured to trigger the TRIAC when the alternating current power reaches a predetermined phase angle; wherein the firing angle control circuit comprises a capacitor and a DIAC; and wherein the firing angle control circuit is configured to trigger the TRIAC when the voltage across the capacitor exceeds a breakover voltage associated with the DIAC; wherein the firing angle control circuit further comprises one or more resistors connected in the path of current flow to the capacitor; the one or more resistors provide an adjustable voltage; and the appliance is configured to adjust the adjustable voltage based on a phase difference between the voltage and current of the alternating current power.
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Specification