Active bleeder circuit triggering TRIAC in all phase and light emitting device power supply circuit and TRIAC control method using the active bleeder circuit

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United States of America Patent

PATENT NO 8884537
SERIAL NO

13728541

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Abstract

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The present invention discloses an active bleeder circuit capable of triggering a tri-electrode AC switch (TRIAC) circuit in all phase. The active bleeder circuit receives a rectified signal having an OFF phase and an ON phase. The active bleeder includes: a detection circuit for generating a detection signal according to the rectified signal and accumulating the detection signal in the OFF phase of the rectified signal; and a current sinker circuit coupled to the detection circuit, for generates a latching current to trigger the TRIAC circuit by operating a switch when the detection signal exceeds a predetermined level. The present invention also discloses a light emitting device power supply circuit and a TRIAC control method using the active bleeder circuit.

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Patent Owner(s)

Patent OwnerAddress
RICHTEK TECHNOLOGY CORPORATIONZHUBEI CITY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Pei-Yuan Taoyuan, TW 24 149
Hsiu, Leng-Nien Zhubei, TW 17 132
Liao, Chia-Wei Zhubei, TW 57 460
Liu, Jing-Meng Zhubei, TW 134 1518
Van, Roy Roland Eindhoven, NL 5 87

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