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A relay is an electrically controlled switch. Electromechanical relays use an electromagnet to activate mechanical contacts, solid-state relays use semiconductor switches.

1
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module. As of the output of the Relay able to switch, it's rated at DC30V 10A. Means you can supply VDC 30V, 10A max; so means any voltage beyond 30 VDC (e.g. 120V) will kill the relay. The max … wattage the relay in the module can support is P = V*I = 300 W. You will need to find other module which support higher wattage rating. …
answered Jul 21 '12 by JeeShen Lee
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though). 2) Yes, relay works like a physical switch; once connected, the current flows. The rated contact resistance of the relay is 100mOhm. …
answered Jul 19 '12 by JeeShen Lee
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If the heat came from the output (on the relay) you probably driving too much current through your relay, try add resistance to control the current to acceptable range. If the heat came from the ICs …
answered Jul 16 '12 by JeeShen Lee