POWER SUPPLY SWITCH CIRCUIT FOR WASHING MACHINE

PROBLEM TO BE SOLVED: To achieve a power supply switch circuit for washing machine capable of achieving power supply turning on and power supply turning off with one switch, by detecting a state of the switch by generating different waveforms according to the state of the power supply switch.SOLUTIO...

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Hauptverfasser: TOYODA YOSHIHIRO, NAKASAKO ASHO, NAKAO HIROSHI, YAMAKAWA HIDEKI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To achieve a power supply switch circuit for washing machine capable of achieving power supply turning on and power supply turning off with one switch, by detecting a state of the switch by generating different waveforms according to the state of the power supply switch.SOLUTION: A power supply switch circuit for washing machine includes: a C contact point switch 1 as a power supply switch; a relay 2 connected between a normal open terminal 1a and a common terminal 1c of the C contact switch 1; a photocoupler 4 connected to the common terminal 1c of the C contact point switch 1; and a photocoupler 5 connected to a normal close terminal 1b of the C contact point switch 1. By controlling opening/closing of the relay 2 according to a signal from the photocoupler 4 and the photocoupler 5, power supply turning on and power supply turning off can be achieved by one switch.SELECTED DRAWING: Figure 1 【課題】電源スイッチの状態によって異なる波形を発生させることでスイッチの状態を検出し、電源入りと電源切りを一つのスイッチで実現することができる洗濯機の電源スイッチ回路を実現する。【解決手段】電源スイッチとしてのC接点スイッチ1と、C接点スイッチ1のノーマルオープン端子1aとコモン端子1c間に接続したリレー2と、C接点スイッチ1のコモン端子1cに接続されるフォトカプラ4と、C接点スイッチ1のノーマルクローズ端子1bに接続されるフォトカプラ5を備えた洗濯機の電源スイッチ回路において、フォトカプラ4およびフォトカプラ5からの信号に応じてリレー2の開閉を制御することにより、電源入りと電源切りを一つのスイッチで実現することができる。【選択図】図1