Phase control device, image forming apparatus, and recording medium
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United States of America Patent
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Nov 20, 2018
Grant Date -
May 3, 2018
app pub date -
Oct 25, 2017
filing date -
Oct 27, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A phase control device includes: at least one switching element connected to an AC power source, the switching element being capable of: turning on and off at specified timings; delivering AC power to a load upon turn-on and cutting it off upon turn-off; and keeping an on-time from the start to the end of turn-on and an off-time from the start to the end of turn-off, the on-time and off-time being variable; a timing setting portion that sets a turn-on and turn-off timing for turning on and off the switching element; a judgment portion that judges whether or not the turn-on and turn-off timing are on at a phase within a first or second phase range; and a processor that starts turning on and off the switching element at the turn-on and turn-off timing, the processor being capable of adjusting the on-time and off-time depending on the judgment result.
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