System and method for induction heating of a soldering iron
First Claim
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1. An induction heating soldering iron system comprising:
- a power assembly adapted to deliver power at an output voltage and an output frequency;
a magnetic induction heater adapted to receive the power from the power assembly, the heater having a temperature dependent upon the output voltage and the output frequency of the power assembly;
a current detector adapted to determine a current flow in the heater; and
a control assembly in communication with the current detector, the control assembly is configured to measure a non-zero magnitude of change in the current flow in the heater, configured to measure a non-zero time duration of the change in current flow in the heater, and is adapted to control temperature of the heater in proximity of the Curie point of the heater material by changing the output voltage in accordance with the non-zero time duration and the magnitude of change in the current flow in the heater.
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Abstract
A soldering iron system includes a power assembly that provides power to an induction heater at a variable voltage and a variable frequency. A control assembly adjusts the temperature of the heater in accordance with signals from a current detector coupled to the induction heater and a selection made by the user on an operating level selector.
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Citations
18 Claims
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1. An induction heating soldering iron system comprising:
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a power assembly adapted to deliver power at an output voltage and an output frequency; a magnetic induction heater adapted to receive the power from the power assembly, the heater having a temperature dependent upon the output voltage and the output frequency of the power assembly; a current detector adapted to determine a current flow in the heater; and a control assembly in communication with the current detector, the control assembly is configured to measure a non-zero magnitude of change in the current flow in the heater, configured to measure a non-zero time duration of the change in current flow in the heater, and is adapted to control temperature of the heater in proximity of the Curie point of the heater material by changing the output voltage in accordance with the non-zero time duration and the magnitude of change in the current flow in the heater. - View Dependent Claims (2, 3, 4, 5, 6, 7, 12, 13, 14, 15)
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8. A method for operating an induction heating soldering iron, the method comprising:
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selecting an operation level from a plurality of operation levels; supplying power to a coil at a voltage and a frequency, at least one of the voltage and the frequency being dependent upon the selected operation level, the voltage and the frequency causing magnetic induction heating of a soldering iron tip; determining a non-zero magnitude of change in current flow in the coil; measuring a non-zero time duration in the change in current flow in the coil; and adjusting the voltage in accordance with the determined magnitude of change in the current flow and the non-zero time duration in the change in current flow; wherein the soldering iron is operated at the proximity of the Curie point of a heater material of the soldering iron. - View Dependent Claims (9, 10, 11, 16, 17, 18)
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Specification