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US 12,278,578 B2Granted
Analog dynamic triac firing circuit
AssigneeWhirlpool Corporation
InventorMark C. Schmidt
Life of this patent
Estimating the term…
Abstract
A method of regulating a motor, including monitoring an absolute voltage value across an anode and a cathode of a triode via an analog switching circuit, the triode being configured to facilitate power a motor, activating a gate of the triode via the circuit in response to the absolute voltage value being greater than a predetermined threshold, and deactivating the gate of the triode via a switching circuit in response to the absolute voltage value being less than the predetermined threshold.
Claims11
A method of regulating a motor, comprising:
- map a voltage value input of a first value into a voltage value output of a second value across a triode via an analog switching circuit, the triode being configured to facilitate power to the motor;
- compare the second value with a positive comparison voltage value;
- provide an electrical signal to an inhibition switch in response to the second value being less than the positive comparison voltage value and greater than a predetermined threshold,
- interrupt a trigger signal from a controller intended for a triac upon receipt of the electrical signal to inhibit the triac from initiating operation;
- and
- compare the second value with a negative comparison voltage value, wherein the positive and negative comparisons include using values from a positive supply lead and negative supply lead;
- and
- provide an electrical signal to the inhibition switch in response to the second value being greater than the negative comparison voltage value.
5 more elements
An inhibition circuit comprising:
- a scaling circuit configured to map a voltage value input of a first value into a voltage value output of a second value;
- a positive comparison circuit configured to compare the second value with a positive comparison voltage value and provide an electrical signal to an inhibition switch in response to the second value being less than the positive comparison voltage value,
- wherein the inhibition switch is configured to interrupt a trigger signal from a controller intended for a triac upon receipt of the electrical signal, such that that the interruption inhibits the triac from initiating operation;
- and
- a negative comparison circuit configured to compare the second value with a negative comparison voltage value, and further configured to provide an electrical signal to the inhibition switch in response to the second value being greater than the negative comparison voltage value,
- wherein the positive and negative comparisons include using values from a positive supply lead and negative supply lead.
3 more elements
Dependencies are inferred from the claim text.