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electrical:12v:relay [2017/10/25 07:44] frater_secessus |
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- | ====== Electrical relay ====== | + | this page has [[electrical: |
- | {{ http:// | + | |
- | Relays provide heavier duty switching (on/off) when it is impractical to switch directly. | + | |
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- | > A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Relays are used where it is necessary to control a circuit by a separate low-power signal, or where several circuits must be controlled by one signal. -- Wikipedia((https:// | + | |
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- | Common uses: | + | |
- | * battery isolation when [[electrical: | + | |
- | * [[electrical: | + | |
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- | ===== latching relays ===== | + | |
- | Normally it takes power from the trigger source to operate the relay. | + |