hi guys
What is the purpose of ac in the following circuit(on 1n4007's pin)
respectfully
What is the purpose of ac in the following circuit(on 1n4007's pin)
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
respectfully
Many thanks for the regulator schematics,
Sorry for stupid question:
what is the difference of using the schema you post instead a 7824/7924 regulator if I already have 35V DC?
Hey Alex,
Very cool! A new circuit to build.
I am in the process of finally mounting my P30, built on your layout, into a case. I have the A class PSU built for it. The only thing I'm lacking is the MM28 phono circuit. If you get to feeling ambitious would you give a stab at a layout for it? I would love to have the complete setup. Here's the schematic.
Thanks, Terry
Hi Terry,
I took a stab at the MM-28 ckt . Its just a first draft, see if you find any mistakes or have suggestions to give. it sure is a bloody complicated ckt, with 28 trannies, trouble shooting would be hell.
reg
Prasi
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P20
Hi, here is a layout for the P20. At the weekend I'll test it. A PCB is ready. The output capacitor I have omitted, all my amplifiers have capacitors at the input.
I will report and upload the sprint file if everything works.
regards Olaf
Hi, here is a layout for the P20. At the weekend I'll test it. A PCB is ready. The output capacitor I have omitted, all my amplifiers have capacitors at the input.
I will report and upload the sprint file if everything works.
regards Olaf
Attachments
Dear Prasi,
Can you kindly point out the location of MM-28 circuit ! Or Please post it again !
gannaji.
Dear Olafk,
Thank you for posting the circuit of P20 also along with the PCB files.
--gannaji
its attached to Terry's post (#8760, http://www.diyaudio.com/forums/soli...imate-fidelity-amplifier-876.html#post4851526) to which I replied.
I couldnt find any mistakes in the sch and layout of MM-28, so here are both.
reg
Prasi
reg
Prasi
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Thanks Prasi,
It looks fine but I am having second thoughts about this one. 56 devices just for the phono stage seems excessive not to mention all the space it will consume in the case. I have a P06 from ESP that i think I'll use instead. Much smaller footprint.
Thanks, Terry
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hi mr apex
can i use this preamplifier for sr150 amp??
my audio source is my computer
have this pre any noise?
you share its pcb layout please
respectfully
hi guys
What is the purpose of ac in the following circuit(on 1n4007's pin)
respectfully
What is the purpose of ac in the following circuit(on 1n4007's pin)
respectfully
Last edited:
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MM3 is phono mm preamp, you need line preamp... you can find line preamps with OP in this thread.
Regards
This PCB include speaker protect, connect AC to 2x40vac on main transformer for supply protect circuit and you must add pcb with relay...
