Are you looking for something new and revolutionary, something that might make you go wow! Then you are in the right thread, grab a couple of these beautiful babies and discover something new. http://www.harrisonaudiolabs.com/Gallery/Amplifiers/1DIFFQC/PauloPT/PauloPT_1DIFFQC.htm
Dont be left behind grab a couple of these http://www.diyaudio.com/forums/solid-state/217539-32-pcbs-available-part-2-a.html#post3125241
There were free PCBs but they are over now. You could make your own PCB. Do allow me to sell you the idea
. Lend us your ears and opinion.
free pcbs? Ok. That wasnt clear to me. My mistake. FET amps interest me a little, not the MOSFET though. Ive built 1 amp, Elliot sounds P3 bipolar, not the P3A. doubling the OP stage, certainly beefed up the sound. Very old transistors though, i used TIP2055 2955 rather than the 2N type. Best i could get of the tx type, Bourns i think. Worth the extra cost per transistor, 3 times the cost. It would be nice to try a modern device though.
Hi Harrison
A few more questions, in your post # 144 http://www.diyaudio.com/forums/solid-state/199196-new-dawn-1diffqc-amplifier-15.html#post2954908
You said this is a basic PSU design, questions
1, Have you added to this design? or has anyone else worked on their PSU yet?
2, How fixed are the values? I have some nice 4700uF caps rather than the 10,000uF
3, What sort of current does the amp draw? My tranny is 120va 30-0-30 @ 2A per winding.
Cheers
A few more questions, in your post # 144 http://www.diyaudio.com/forums/solid-state/199196-new-dawn-1diffqc-amplifier-15.html#post2954908
You said this is a basic PSU design, questions
1, Have you added to this design? or has anyone else worked on their PSU yet?
2, How fixed are the values? I have some nice 4700uF caps rather than the 10,000uF
3, What sort of current does the amp draw? My tranny is 120va 30-0-30 @ 2A per winding.
Cheers
What could be added
1. Slow start depends on how big your caps and transformer are
2. Bleeders, to keep you safe during service
3. CRC , to get that ripple down further
etc
It will work just fine as is
That should also work, hope you have been following this exciting thread http://www.diyaudio.com/forums/solid-state/216409-power-supply-resevoir-size.html
You can get a bigger tranny later. With the right load this amplifier will keep the tranny you have busy, the tranny will run slightly warmer. The amplifier should comfortably draw 20A.
Hi HarrisonBoards arrived today, thanksBetter get my psarts order off to Mouser!Cheers for the PSU info, wil check out this over the next week http://www.diyaudio.com/forums/solid-state/216409-power-supply-resevoir-size.html
normally 10nF would be across the switch stopping it from arcing when opened.
MJ15003. Inexpensive, available in TO-3 and more refined than the '55s. A good package.
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