- #1
booxcar
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Hello all! I just had a quick question to ask about relays. I understand that you can use a relay as an input voltage-controlled on-off switch but it can also be used to control the output voltage to the load controlled by an input voltage, correct? If I am understanding everything correctly, since the pole and throw determines how many terminals there are and the number of terminals represent how many output 'configurations' can exist. So a single-pole single-throw has two terminals (Wiki says 4 terminals total if you include two terminals for the coil... don't really know what that means so for this example I'm going to ignore it
therefore the relay can be used as an on off switch whereas a single-pole double-throw switch (3 terminals not including the two terminals for the coil) can have a 0V 'off' output, as well as 2 more set 'on' output values. Is this correct? If so, I guess I kind of answered my own question.
Thanks,
boox
![Jaw Drop :)) :))](/styles/physicsforums/xenforo/smilies/jawdrop.png)
Thanks,
boox