Out of curiosity, how does a zero crossing solid state relay work? I had
thought it had a triac inside, but your comment about voltage drop makes
me question that assumption.
jeff, wa1hco
> Hi Andy,
> Are you thinking about just replacing the relay
> across the resistor with a Triac? Or something more
> involved like a phase controlled ramp??
>
> A Triac will exhibit a considerable loss during
> normal, post startup, operation. I've seen circuits
> where a Triac is used with a relay connected in
> parallel. The Triac is first enabled, then shorted by
> the relay. This greatly reduces contact wear on the
> relay while avoiding the typical 2V drop of a Triac.
>
> 73 & Good morning,
> Marv WC6W
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