Gtlab Forum
Тематический => Гитарные усилители и примочки => Тема начата: armkon от Июля 13, 2011, 03:44:31 pm
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hi, i have make the pcb layout of engl e530 if anyone intrested
http://img585.imageshack.us/img585/117/engl.gif
i have make pcb with that schematics:
http://milas.spb.ru/~kmg/files/schematics/Engl/530/1/530_full.gif
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I don't understand why PCB in picture??? I think that layout format more preferred :).
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А главное куда выложил - в файловый архив KMG. :) Видимо armkon по-совместительству еще и кул-хацкер ....
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да не, он схему юзал ту что выложена кмг
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@ el Doctor
А... Теперь понятно... Прочитал не внимательно...
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have question about transformers back to back placing.
what two transformers will be best for this build?
230-12->10.5-230 = ~370V
but how many mA must have the 1 and the second transformer?
tubes will take 600mA
relays about 50mA
it will be ok if i use the first transformer: 230-12V 1A
and the second one: 230-10.5V 0.3A ??
i don't want to overload the second transformer :-/
layouts for soldano (x88r lead / avenger preamp) and engl e530 version from KMG schematics that i make:
http://higain.elementfx.com/upload/
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First of all U will overload 1st tansformer by 2nd. They must be inended for each other.
For not overloading the 2nd transformer - calculate the power it transforms in your case.
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so how big in A must be the second transformer? i have 4A for 12V and 2A for 12V and 1,6A for 12V. I can use any of them?
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ok
approx 250V * approx 6mA=1.5W approx = 2W
2W / 12V = 0.1666 A
i.e. 0.3 A is very good
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so e530 DIY has 2 transformers??how big current??