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  2. Solid-state relay - Wikipedia

    en.wikipedia.org/wiki/Solid-state_relay

    A solid state relay (SSR) is an electronic switching device that switches on or off when an external voltage (AC or DC) is applied across its control terminals. They serve the same function as an electromechanical relay , but solid-state electronics contain no moving parts and have a longer operational lifetime.

  3. Relay - Wikipedia

    en.wikipedia.org/wiki/Relay

    Coil voltage — machine-tool relays usually 24 VDC, 120 or 250 VAC, relays for switchgear may have 125 V or 250 VDC coils, Coil current — Minimum current required for reliable operation and minimum holding current, as well as effects of power dissipation on coil temperature at various duty cycles. "Sensitive" relays operate on a few ...

  4. Zellweger off-peak - Wikipedia

    en.wikipedia.org/wiki/Zellweger_off-peak

    Zellweger is the brand name of an electric switching device also known as a Ripple Control Receiver used to control off-peak electrical loads such as water heaters by switching these loads OFF over peak energy use times of the day and switching them ON after peak energy use times of the day, hence the term 'off peak' control.

  5. Mercury relay - Wikipedia

    en.wikipedia.org/wiki/Mercury_relay

    Normally closed mercury relay, with coil around top of tube and adjustable angle. A mercury relay (mercury displacement relay, mercury contactor) is a relay that uses mercury as the switching element. They are used as high-current switches or contactors, where contact erosion from constant cycling would be a problem for conventional relay contacts.

  6. Snubber - Wikipedia

    en.wikipedia.org/wiki/Snubber

    The coil diode clamp makes the relay turn off slower ( = /) and thus increases contact arc [clarification needed] if with a motor load which also needs a snubber. The diode clamp works well for coasting a uni-directional motor to a stop, but for bi-directional motors, a bipolar TVS is used.

  7. Omron - Wikipedia

    en.wikipedia.org/wiki/OMRON

    Omron Corporation (オムロン株式会社, Omuron Kabushiki-gaisha), styled as OMRON, is a Japanese electronics company based in Kyoto, Japan. Omron was established by Kazuma Tateisi ( 立石一真 ) in 1933 (as the Tateisi Electric Manufacturing Company ) and incorporated in 1948.