Electronic device and liquid ejection apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 12, 2015
Grant Date -
Apr 3, 2014
app pub date -
Sep 27, 2013
filing date -
Sep 28, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
An electronic device includes: a device body; a power supply circuitry which supplies electric power to the device body; and a real-time clock which measures a current time. The power supply circuitry includes: a transformer which converts electric power input to a primary side of the transformer and outputs the converted power to a secondary side of the transformer; a switching element disposed on the primary side to perform switching of a current to be supplied to the primary winding; and a switching controller disposed on the primary side. The real-time clock is disposed on the primary side to receive electric power. The device body includes: a main controller disposed on the secondary side to control the electronic device that receives electric power on the secondary side; and a circuit which couples the main controller and the real-time clock to allow communication therebetween in an electrically insulated state.
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