Dibya’s TDA7293 Xmas amp by Jhofland - Giveaway

[xrk971]

Here is the final layout with all corrections applied.

1. Isolate the mounting bolt pads from the ground plane, except the top right bolt is connected to the ground via a ground loop breaker (opposed diodes, 10R resistor, and 100nF film cap, all in parallel)

2. Add third set of optional pads for Wima 4.7uF 250v MKP film cap at C1

3. Add 100k resistor to input pin upstream of input coupling cap.

4. Update BOM to show 47k5 resistor for R15 to allow DC servo to work properly.

New and final board layout (107mm x 65mm):



Schematic here.

BOM here.

[chermann]

payment done by my brother !
i use klarna

chermann Austira


Thank you guys for that nice chance to get a fine amp and your effort!!

[twocents]

Thank you X (and others) for all the effort and a great project.
Payment sent, but this time PayPal did not give me the "Friend" option. If you incurred extra costs on your side, let me know please. I was actually hoping we could use the Etsy route as I actually wanted some All Cee boards at the same time, but can get that later.

[xrk971]

The boards have just been ordered and so I should have them in maybe 10 days. The little change to add the 4.7uF cap increased the board maximal dimension from 100mm to 107mm, exceeding the magic 100mm “budget” board limit. Some of you have donated to me more than the recommend amount, and it’s really not a big cost, all things considered.

Great to see so many people signed up for this project. I just hope you try and build the amp. It really is an easy and enjoyable amp to solder. All the parts fit and go where they are supposed to per the BOM and schematic.

[invaderzim]

payment sent.

Thank you so much for all the work that is going into this! In a time when there isn't a lot from day to day to look forward to, having a project like this to plan and build is a majorly uplifting thing.

[Francois G]

Hi X,
Thanks again. Payment sent.

[tubesguy]

Thanks again, and payment sent.

[Sixto]

Although Paypal did not ask if this was for a friend or for a purchase, like they usually do... let me know if they deducted any amount and/or if I need to send more to cover their fees.
By the way, our paypal account is under my wife's name (Monica)

Thank you! - Six.

[xrk971]

Status Update of folks who have paid.
Thank you to everyone who has paid!

Jlevro
Astromo
Nautibuoy
kp93300
Signal lost
Chermann
Twocents
Invaderzim
Francois G
Tubesguy
Sixto

[angchuck]

payments sent