| AMERITHERM, INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110221493 | Constant Phase Angle Control for Frequency Agile Power Switching Systems - Power switching systems often benefit from controlling the instant at which the power devices change state so as to minimize dissipation in these devices. Such systems often require fairly tight tolerances on reactive components and a relatively narrow frequency operating range to be certain these switching times occur as intended. This invention defines a system that can adapt the required switching instant over very wide changes in the reactive components. | 09-15-2011 |
| 20110108547 | Food Heater - In one aspect, the present invention provides a consumer appliance that uses RF energy to heat foods stored in a container that is suitable for RF heating. | 05-12-2011 |
| 20110011850 | PORTABLE FOOD HEATER - In one aspect, the present invention provides a consumer appliance that uses RF energy to heat foods stored in a container that is suitable for RF heating. | 01-20-2011 |
| 20100296322 | Power Switching System to Increase Induction Heating to a Load From Available AC Mains Power - In one aspect, the invention provides a power system for providing power to a load. In some embodiment, the system comprises: a rectifier configured to rectify an AC main signal to produce a rectified AC main signal; a zero cross detector configured to receive the AC main signal and to detect when the AC main signal equals zero; a switching device having (i) a first terminal connected to a first node, wherein a first output terminal of the rectifier is also connected to the first node and (ii) a second terminal connected to a second node; a tank circuit having (i) a first terminal coupled to a third node, wherein a second output terminal of the rectifier is also coupled to the third node and (ii) a second terminal coupled to the second node; a current and/or voltage detector connected to the second node; and a controller in communication with the current detector and zero cross detector and configured to turn on and off the switching device based on, at least in part, information received from the zero cross detector and the current and/or voltage detector. | 11-25-2010 |
| 20100073093 | Automatic Frequency Compensation for Pulse Width Modulated RF Level Control - Preferred embodiments of the present invention provide systems and methods that automatically correct the desired on-time of switching elements as the resonant frequency changes, so as to maintain the correct proportional value. | 03-25-2010 |
| 20090251182 | Constant Phase Angle Control for Frequency Agile Power Switching Systems - Power switching systems often benefit from controlling the instant at which the power devices change state so as to minimize dissipation in these devices. Such systems often require fairly tight tolerances on reactive components and a relatively narrow frequency operating range to be certain these switching times occur as intended. This invention defines a system that can adapt the required switching instant over very wide changes in the reactive components. | 10-08-2009 |
| 20090168477 | Power Switching System to Increase Induction Heating to a Load From Available AC Mains Power - In one aspect, the invention provides a power system for providing power to a load. In some embodiment, the system comprises: a rectifier configured to rectify an AC main signal to produce a rectified AC main signal; a zero cross detector configured to receive the AC main signal and to detect when the AC main signal equals zero; a switching device having (i) a first terminal connected to a first node, wherein a first output terminal of the rectifier is also connected to the first node and (ii) a second terminal connected to a second node; a tank circuit having (i) a first terminal coupled to a third node, wherein a second output terminal of the rectifier is also coupled to the third node and (ii) a second terminal coupled to the second node; a current and/or voltage detector connected to the second node; and a controller in communication with the current detector and zero cross detector and configured to turn on and off the switching device based on, at least in part, information received from the zero cross detector and the current and/or voltage detector. | 07-02-2009 |
