Apparatus and Methods for Power Stealing by Controllers
First Claim
1. A controller for use in a climate control system, the controller comprising:
- a power stealing circuit connectible with a control of the climate control system and configured for stealing power from a power source via a signal through the control; and
an overcurrent limiting circuit configured to limit a first portion of the signal to prevent a false call for operation of the control;
the overcurrent limiting circuit further configured not to limit a second portion of the signal to prevent a false call, where the control is configured to recognize only the first portion as determinative of whether the signal is a call for operation.
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Accused Products
Abstract
A controller for use in a climate control system includes a power stealing circuit connectible with a control of the climate control system and configured for stealing power via a signal from a power source through the control. An overcurrent limiting circuit is configured to limit a first portion of the signal to prevent a false call for operation of the control. The overcurrent limiting circuit is further configured not to limit a second portion of the signal to prevent a false call, where the control is configured to recognize only the first portion as determinative of whether the signal is a call for operation.
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Citations
20 Claims
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1. A controller for use in a climate control system, the controller comprising:
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a power stealing circuit connectible with a control of the climate control system and configured for stealing power from a power source via a signal through the control; and an overcurrent limiting circuit configured to limit a first portion of the signal to prevent a false call for operation of the control; the overcurrent limiting circuit further configured not to limit a second portion of the signal to prevent a false call, where the control is configured to recognize only the first portion as determinative of whether the signal is a call for operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method performed by a controller in a climate control system, the method comprising:
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configuring and sending a signal having first and second portions to a control of the climate control system such that only the first portion is determinative of whether the signal is a call for operation of the control; limiting the first portion to prevent a false call for operation of the control; and stealing power during at least the second portion. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A controller for use in a climate control system, the controller comprising:
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a power stealing circuit connectible with a control of the climate control system and configured for stealing power via a signal from a power source through the control; and an overcurrent limiting circuit configured to limit only a positive portion of the signal to prevent a false call for operation of the control, where only the positive portion is determinative of whether the control recognizes the signal as a call for operation. - View Dependent Claims (17, 18, 19, 20)
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Specification