>For soft start, you would add a second solid state timed relay, such as the
>Crydom DSD/DLD series, to short out the line surge resistors. Time delay
>is adjustable by placing different value of resistors across the time deley
>control pins. Typical time delays for this particular product range from
>0.1 sec to 133 sec.
>
>Crydom also makes solid state "soft start" modules (series "SST") but there
>isn't much information about how they function.
>
>I can't see any reason not to use solid state relays. Some of the
>commercial amps MUST be using these somewhere - they're small, quiet, no
>moving parts or contacts.
>
>Phil
I had forgotten about the Crydom line, Phil. When I saw the
prices, I knew I had to wait until they hit the surplus market
before I could afford one! Ordinary S.S. 25a relays go new
at the Dallas surplus emporium for under $4. I have used them
on several projects with good results.
(((73)))
Phil, K5PC
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