Morgan Olsson wrote:
> I have never seen a triac as a slave to a relay before, but in this app=
lication it seem the best thing.  So... what can go wrong...?
>=20
> As a remedy for relay contacts burning i have put a TRIAC as slave to i=
t.
>=20
> Schematic:
>=20
>     Existing relay contact that
>     can=B4t handle the motor itself
>        ,---o/o-----.
>        |       |<|-' gate
>    O---+-------|>|------------.
> 230VAC        Triac    Load=3DVery inductive motor
>    O--------------------------=B4

What about using the output to drive one of the commercial solid state=20
relay packages?  These have either A/C or D/C control, and can handle=20
10A or more if needed.

I've used, and had good luck, with "Continental" relays, the 10 A one=20
from this page specifically:

     http://www.ciicontrols.com/products/sv.htm

They do zero-crossing internally.

--Michael
--=20
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