I want first to see how many boards and what is going to be production cost, the I will do instruction, BOM and edit first page.
The are only very small changes in the schematic as reflection from 100W version where is no changes at all.
Looks like minimal interest in the 100W boards, so I'll drop my interest in 100W and stick with 200W.
Damir said we needed at least 10 and we've got 12 so far.
100W CFA:
?
200W CFA:
mlloyd1 4 boards
AVWERK 2 boards
trebolo 4 boards
Lbud4 2 boards
Damir said we needed at least 10 and we've got 12 so far.
100W CFA:
?
200W CFA:
mlloyd1 4 boards
AVWERK 2 boards
trebolo 4 boards
Lbud4 2 boards
I will make BOM, but I am not going to make a parts cost estimate. This is DIY not commercial amp. As an example, I will define 0.6 1% metal film resistor, but not what production should be, that is up to one how much to spend for parts.
Who said low threshold voltage V-FET, IRFP240 is not of that kind and yes it's much cheaper.
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What I said was just a proposal to help-you to increase and accelerate your group buy and improve the success of your impressive work.
To decide myself, and just for myself, to be one of your "customers" need too much work for my laziness: How to order something if we have no idea of the final cost. And it is a fuul work. But i could work on it if it could helps others.
May-be too I could prefer a SMD version of the board (apart some critical components).
Thank you for the offer, but I prefer to have control over this group buy and to stay in this thread not to open new one. There was a group buy for the 100W version before and a lot of useful information can be find here as those two amps differ just in output power.
This is DIY not the rocket science.
BR Damir
This is the layout.
Attachments
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No comment about price. I really want know if it's OK otherwise I will not order the boards.
200W CFA:
mlloyd1 4 boards
AVWERK 2 boards
trebolo 4 boards
Lbud4 2 boards
BR Damir
Hi Toni,
Thank you for this clarification.
This is my design, not typical group buy. It includes amp design, the layout development, testing and it's only way I can get some money to proceed with this hobby. Everybody can decides for himself I don't push anybody to buy.
BR Damir
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Sorry - just for clarification - I only wanted to show you one example of an alternative pcb producer. I didn't know that you need to sell your pcbs on a commercial basis...
It is still very fine that you keep your design open for DIY
so everybody can decide himself if he wants to buy your pcb or designs his own.Have fun,
Toni
As you have populated several bords, could-you give-us an evaluation of the total component's price.
I never calculated total components price, it depends where you buy it and do you want more expensive parts. I added the BOM so you can calculate for yourself according to your components source.
Have a good calculation time.
Damir
