Differential shunt-type protection circuit
OwnerTai-Her Yanginventor
Life of this patent
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Abstract
A differential shunt-type detector circuit includes a voltage-regulator component series combined with one or more than one shunt components in a circuit connected in parallel with, for example, a thermostatic switch element, such that when the terminal voltage of the shunt components is within the voltage-regulator component work range, no shunt or distribution or shunting effect is generated by the voltage-regulator component, while when the terminal voltage exceeds the voltage-regulator component work range, a shunt or distribution effect is obtained.
Claims3
In a circuit comprising a thermostatic switch element and shunt components, wherein the shunt components are connected in parallel with the thermostatic switch element and include at least one shunt resistance element and a voltage-regulator component,
- the improvement wherein the voltage regulator component forms a means for preventing shunting of current through said resistance element until a terminal voltage across the voltage regulator component exceeds a set point of the voltage regulator component, wherein the resistance element forms a means for shunting the current when the set point is exceeded, and wherein a control input of a power switch is connected between the thermostatic switch and a diode such that the power switch is controlled according to a state of the thermostatic switch.
Dependencies are inferred from the claim text.