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-   -   FS: Speaker protector using solid state relay (https://www.diyaudio.com/forums/swap-meet/337282-fs-speaker-protector-using-solid-relay.html)

nigelwright7557 29th April 2019 06:00 PM

FS: Speaker protector using solid state relay SSR
 
Speaker protector using solid state relay (SSR)
60 amp 300 volt mosfets. Good for 150WRMS into 4 ohms or 300WRMS into 8 ohms.
Requires a mains transformer 0-9 0-9VAC 5VA.
Holds off relay for 5 second for anti thump power up.
If DC is detected the relay is turned off and protect LED comes on until power is removed.
9=95 each plus 3-99 p+p if UK or 10-99 p+p rest of world.
I built up a few for some disco amplifiers and some spares then never used them.
protect | harrabylad | Flickr

nigelwright7557 8th May 2019 04:19 PM

I have a new model that has 230VAC mains transformer on board.
Good for 500WRMS into 4 ohms or 1000WRMS into 8 ohms.
5 second anti thump power up delay.
Uses very high power mosfets with very low Rds on.
14-75 + 3-99 p+p to uk or 10.99 p+p to rest of world.
I have two left.

nigelwright7557 10th May 2019 05:43 PM

I found a couple more transformer versions so four for sale as above.

avtech23 11th May 2019 04:36 AM

Do you have any pics Nigel?

Cheers

nigelwright7557 12th May 2019 05:59 PM

Quote:

Originally Posted by nigelwright7557 (https://www.diyaudio.com/forums/swap-meet/337282-fs-speaker-protector-using-solid-relay-post5784513.html#post5784513)
I have a new model that has 230VAC mains transformer on board.
Good for 500WRMS into 4 ohms or 1000WRMS into 8 ohms.
5 second anti thump power up delay.
Uses very high power mosfets with very low Rds on.
14-75 + 3-99 p+p to uk or 10.99 p+p to rest of world.
I have two left.

Should read 400WRMS into 4 ohms and 800WRMS into 8 ohms.

nigelwright7557 12th May 2019 06:00 PM

Quote:

Originally Posted by avtech23 (https://www.diyaudio.com/forums/swap-meet/337282-fs-speaker-protector-using-solid-relay-post5787440.html#post5787440)
Do you have any pics Nigel?

Cheers

ssr2 | harrabylad | Flickr

ssr1 | harrabylad | Flickr

av-trouvaille 13th May 2019 03:56 PM

Did you receive my pm?

nigelwright7557 13th May 2019 03:57 PM

Quote:

Originally Posted by av-trouvaille (https://www.diyaudio.com/forums/swap-meet/337282-fs-speaker-protector-using-solid-relay-post5789781.html#post5789781)
Did you receive my pm?

No. Try again.

nigelwright7557 16th May 2019 05:01 PM

Still got a few left.
I some with mains transformers on the pcb and some without and require a separate mains transformer.
14-75 for transformer version and 9-95 for one without transformer.
3-99 p+p to uk or 10.99 p+p to rest of world.

av-trouvaille 16th May 2019 06:26 PM

Did you receive my payment?


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