AC relay using two photon couplers

Posted on Oct 15, 2012

If load current requirements are relatively low (i.e. maximum forward rms current 500 mA), an ac solid state relay can be constructed quite simply by the connection of two H11C optically coupled SCRs in a back-to-back configuration as illustrated.

AC relay using two photon couplers
Click here to download the full size of the above Circuit.

An easy project.

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