Hi,
A very good reason for creating at board that requires a large heatsink is to force the builder to use a big enough heatsink to accommodate most of the different power supply voltages people can come up with.
This way people are not tempted to raise the power supply voltage on an amp with too small a heatsink.
I guess it is just (another) one of those things some people aren’t thinking about when complaints are made about the size of the PCB.
\\\Jens
A very good reason for creating at board that requires a large heatsink is to force the builder to use a big enough heatsink to accommodate most of the different power supply voltages people can come up with.
This way people are not tempted to raise the power supply voltage on an amp with too small a heatsink.
I guess it is just (another) one of those things some people aren’t thinking about when complaints are made about the size of the PCB.
\\\Jens
Tad,Ps. They do look good don't they.
Got mine this evening... and they don't just look *good*, they are perfect!!! Thanks for pulling together this GB and to Jens for the excellent work!!! Cheers to both of you!
Rifa/Evox capacitor
I just got a quote from Mouser for the 100nf/250 volt capacitors used in Jens Leach board. They are Rifa/Evox mmk10104k250a01l4. I could not find these in singles from any of the usual sources. We can have them for 20 cents apiece. I will buy them --(1000) -- and distrubute if there is interest. You will need 13 for each board. Sounds like a good deal. Tad
I just got a quote from Mouser for the 100nf/250 volt capacitors used in Jens Leach board. They are Rifa/Evox mmk10104k250a01l4. I could not find these in singles from any of the usual sources. We can have them for 20 cents apiece. I will buy them --(1000) -- and distrubute if there is interest. You will need 13 for each board. Sounds like a good deal. Tad
I'm in for caps, too.
Tad, to save you a boatload of work I'd limit your group buys to parts that are difficult to find or only available/significantly cheaper in large quantities. Having kitted 500 or so PSU 2.2s, I know how much work it is.
Thanks for the board buy and offering caps.
Tad, to save you a boatload of work I'd limit your group buys to parts that are difficult to find or only available/significantly cheaper in large quantities. Having kitted 500 or so PSU 2.2s, I know how much work it is.
Thanks for the board buy and offering caps.
Actually Rifa PHE426 .1uf/250V will be a better one. Mouser has Wima MKP10 which is good, too. Sure, a bit more expensive. Personally I would not mind making it a .22uf then I will have excellent MKP choices from Epcos and Vishay BC at Digikey.
Volume pricing is not bad for all above either.
Volume pricing is not bad for all above either.
Re: Rifa/Evox capacitor
hey Tad, can you get me 100 of those?
tryonziess said:I just got a quote from Mouser for the 100nf/250 volt capacitors used in Jens Leach board. They are Rifa/Evox mmk10104k250a01l4. I could not find these in singles from any of the usual sources. We can have them for 20 cents apiece. I will buy them --(1000) -- and distrubute if there is interest. You will need 13 for each board. Sounds like a good deal. Tad
hey Tad, can you get me 100 of those?
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