You won...! -the right to make the board wider, and maybe implement dual mosfets at each end?
Arne K
Yes!!!
You won...! -the right to make the board wider, and maybe implement dual mosfets at each end?
Arne K
Myself , I think the original circuit is fine. Having the FETs on the end is fine but not absolutely neccessary. You could go overboard trying to include everything. Remember KISS.
If possible, moove the thermistor between the mosfets, so you easily can choose, if only using one pair.
Arne K
Or one could add a second set of holes, but I think in operation only one is needed per rail.
Ok, here is what I have come up with. I need to clean the silk screen, but besides this it should be pretty functional.
The board is 190x45 mm. You may notice that I have placed the thermistors differently. This is to make it easier to mount. The drawback is that I had to run traces in between the mosfet footprints, but this should not pose any problems IMO.
Any comments?
The board is 190x45 mm. You may notice that I have placed the thermistors differently. This is to make it easier to mount. The drawback is that I had to run traces in between the mosfet footprints, but this should not pose any problems IMO.
Any comments?
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Looks nice with the parts spread out a bit. Not that I would use two pair of outputs but are the pairs too close together?
Why would someone use two pairs of outputs with the same current as one pair?
Well I have added the extra footprint mostly for people who likes to use more devices - as an extra option. But you are right if you run them at full throttle, you'll need to make sure you can transfer the heat away. You can use a copper spreader if you like.
I think people who wants to do this will probably end up running each device at 700 1000mA or so - if you want to push it further you need prohibitively large heatsinks imo.
I have updated my order site - added the new layout and made an GB List page, where you can follow who signs up (and pays).
Order page:
GB order page for cviller
Group buy list:
Group Buy status page
I am considering also doing the F4 - would that be of any interest?
Order page:
GB order page for cviller
Group buy list:
Group Buy status page
I am considering also doing the F4 - would that be of any interest?
Hi Cviller,
Have you tried the double output modification? I did and it didn’t sound as good as a single pair of output devises. My theory about why this occurred is that it increases the open loop gain hence the amount of feedback in the circuit. The nice sound field moved up front and wasn’t as appealing to me.
What do you think about adding a casscode devises for the input?
Thanks,
Have you tried the double output modification? I did and it didn’t sound as good as a single pair of output devises. My theory about why this occurred is that it increases the open loop gain hence the amount of feedback in the circuit. The nice sound field moved up front and wasn’t as appealing to me.
What do you think about adding a casscode devises for the input?
Thanks,
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