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Science Forum Index » Electronics Forum » Solid state relays
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| ---MIKE--- |
 Posted: Sat Mar 10, 2007 1:38 pm |
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I am familiar with using solid state relays to switch 110VAC using a low
DC voltage to activate. Can these also be used to switch 12VDC (to pick
a 12 volt mechanical relay)?
---MIKE---
Quote: In the White Mountains of New Hampshire
(44° 15' N - Elevation 1580') |
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| Guest |
| Posted: Sat Mar 10, 2007 8:03 pm |
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Any that I have used are sort of like a pair of silicone controlled
rectifiers. This means they need the current to drop to zero to
shut off. Therefore, A.C. only.
A good mos fet like an irf250 30a 200v with really low on resistance
is probably a better choice. |
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