Neither the PDF nor the Excel file in the zip file have the updated BOM. It still points to the "-C" part with the incorrect pinout. Could someone fix this?
Thank you!
Has anyone verified if 512-KSC945YTA is an acceptable/correct replacement?
dodog,
The 512-KSC945YTA will be fine.
Alternatively you can use 512-KSC945YBU which is the same but without the kinked leads
The 512-KSC945YTA will be fine.
Alternatively you can use 512-KSC945YBU which is the same but without the kinked leads
Sorry, I'm not following. I can't seem to find pics of either to see what you mean by kinked leads.
Transistors with "kinked leads" can mean one of two things: either spread out to give wider spacing, or a small "wiggle" in each lead which keeps the lead from falling straight through the holes in the board.
If you do a Google images search for TO-92-3 you will see what I mean.
If you do a Google images search for TO-92-3 you will see what I mean.
Ahh, I see what you mean. I had always thought the end-user was the one who forked the leads like that. D'oh! Thanks for the clarification.
I'm interested in buying 2 Speaker protection boards without the Soft Start board, is that possible?
When will they be back in stock?
When will anything be back in stock !! 🙂
I'm interested to know why you didn't use a single DPDT relay rathere than the 2 SPDT relays?
When will they be back in stock?
When will anything be back in stock !! 🙂
I'm interested to know why you didn't use a single DPDT relay rathere than the 2 SPDT relays?
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In the V2 thread, a trafo of 10-15VA was recommended. A popular choice looks to be an Antek AN-0124 (2x24V): AN-0124 - 10VA 24V Transformer - AnTek Products Corp In the BOM for the V3 build, it has the option of (for relays) 12VDC for for 34VAC OR, 5VDC for 12VAC. I saw that in the V2 build, people were using the 12VDC relays with this Antek. Is the 5VDC relay adequate or should I bump it to the 12VDC? Any harm in using the higher rated relay?
With that transformer, you should use two 12VDC relays.
I don't see any reference in the BOM about using 5VDC relays, only 12VDC or 24VDC, depending on the transformer used.
No special reason in particular, it's just that these types of SPDT relays are widely available around the world, the choice for DPDT vs SPDT was based on worldwide availability so that anyone, anywhere can build and use it.
🙂
I'll be using a 30 VAC transformer for the F5T. Does the speaker protection circuit need any changes/special parts selected for the higher rail voltage?
Is there a manifest on digikey or elsewhere that we can use to buy all the necessary parts?
Thanks.
Is there a manifest on digikey or elsewhere that we can use to buy all the necessary parts?
Thanks.
I would suggest the use of a separate small transformer to power the speaker protection boards. 30VAC is too much for 12V relays and not enough for 24V relays.