Invention Grant
- Patent Title: Simultaneous use of phase control and integral half cycle (IHC) control
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Application No.: US16481368Application Date: 2017-03-31
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Publication No.: US10775725B2Publication Date: 2020-09-15
- Inventor: Mark Hirst
- Applicant: Hewlett-Packard Development Company, L.P.
- Applicant Address: US TX Spring
- Assignee: Hewlett-Packard Development Company, L.P.
- Current Assignee: Hewlett-Packard Development Company, L.P.
- Current Assignee Address: US TX Spring
- Agency: HP Inc. Patent Department
- International Application: PCT/US2017/025586 WO 20170331
- International Announcement: WO2018/182735 WO 20181004
- Main IPC: G03G15/20
- IPC: G03G15/20 ; G03G15/00

Abstract:
Controlling power delivered to a heating device occurs using a phase control, wherein the phase control includes changing a cut-off phase of an alternating current electrical signal delivered to the heating device. The power delivered to the heating device is increased from zero to an operational level using the phase control. The level of the power delivered to the heating device is maintained at the operational level using both the phase control and an integral half cycle control. The integral half cycle includes selectively removing a plurality of half cycles from the alternating current electrical signal delivered to the heating device.
Public/Granted literature
- US20190391512A1 SIMULTANEOUS USE OF PHASE CONTROL AND INTEGRAL HALF CYCLE (IHC) CONTROL Public/Granted day:2019-12-26
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