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Pictures of Members' Setups and general satellite
Home made diseqc positioner
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<blockquote data-quote="johnjohnsmith" data-source="post: 1087095" data-attributes="member: 414970"><p>The varistor/doble zener/capacitor are to protect the relay contacts from arcing? I used for around 20 years a home made positioner control with no problem (and no such protection). Last year I made a new , arduino based, one and one of the relays is failing intermittently.</p><p>I'm thinking to either use an h-bridge or put a protection circuit like yours with a new relay board, so I'd like to know the details of the zener used.</p></blockquote><p></p>
[QUOTE="johnjohnsmith, post: 1087095, member: 414970"] The varistor/doble zener/capacitor are to protect the relay contacts from arcing? I used for around 20 years a home made positioner control with no problem (and no such protection). Last year I made a new , arduino based, one and one of the relays is failing intermittently. I'm thinking to either use an h-bridge or put a protection circuit like yours with a new relay board, so I'd like to know the details of the zener used. [/QUOTE]
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Pictures of Members' Setups and general satellite
Home made diseqc positioner
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