Hi,
I've bought a Mean Well EPS-65-24 switched-mode power supply module a while ago. It has a single 24V output. What I find it strange is that it has two optocouplers (U2 and U3, please see the photos). Both of them are PC123 and have the same orientation. One is beneath the transformer and the other is between the heat sinks.
My question is, why are there two optocouplers for a single output module? I've observed that pin 3, on both, share a common track. But I have no clues to why.
Kind regards, Samuel Lourenço
I've bought a Mean Well EPS-65-24 switched-mode power supply module a while ago. It has a single 24V output. What I find it strange is that it has two optocouplers (U2 and U3, please see the photos). Both of them are PC123 and have the same orientation. One is beneath the transformer and the other is between the heat sinks.
My question is, why are there two optocouplers for a single output module? I've observed that pin 3, on both, share a common track. But I have no clues to why.
Kind regards, Samuel Lourenço
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