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Old 28th November 2019, 02:58 AM   #2301
poseidonsvoice is offline poseidonsvoice  United States
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Meanie,

Where are your MOFO PCB's from? They look great.

Thanks,
Anand.
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Old 28th November 2019, 03:19 AM   #2302
xrk971 is offline xrk971  United States
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Those are Prasi (Lion head logo). Nice boards.
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Old 28th November 2019, 04:04 AM   #2303
Vunce is offline Vunce  United States
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Glad you received them in a timely manner.
That is some pile of iron you have there
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Old 2nd December 2019, 07:31 PM   #2304
plasnu is offline plasnu  United States
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A question for SIT Mofo. The high frequency ripple of the bias voltage from SMPS can be reduced with one of those small filter? Or should I consider something else (or just ignore it)?

TDK Filter
SLF7045T-471MR22-PF TDK | Mouser

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https://i1.wp.com/blog.audiomaker.te...itmumosimp.png
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Old 2nd December 2019, 07:35 PM   #2305
Zen Mod is offline Zen Mod  Serbia
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nothing wrong with overkill
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Old 3rd December 2019, 10:12 PM   #2306
jervill is offline jervill  United Kingdom
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Hi guys,

Just got around to planning a Mofo build. Quick question. Would a 160VA 2x 0-15v (5.3A each) torroidal be enough for a lower power Mofo (19v-20v) stereo in a single chassis? Its a parts bin find looking for a use together with the diyaudiostore's PS boards I have left over from my F4 build. Thanks.
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Old 3rd December 2019, 10:35 PM   #2307
Dennis Hui is offline Dennis Hui  Canada
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I would try it.
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Old 4th December 2019, 12:14 AM   #2308
TonyTecson is offline TonyTecson  Philippines
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meanies posts about transformers moved into its own thread....MOFO power transformer psu
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Old 4th December 2019, 05:47 PM   #2309
Bangla H is offline Bangla H  Germany
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Default to jervill

My first try was exactly that transformer voltage and power rating with 10Tmf in
CLC configuration for both channels. Sedlbauer- Conrad (Blue Drugstore )

The 10mH,5A 179ZJ Hammond choke was build in between.

Maximal Bias was tested to 2,8A each channel with the lower priced Hmd chokes on source.
Thermaly limit but proper working conditions.

Driven by differnet Tube gain stages to experiment with.
Not finished yet but will move forward next time- winter is diy time .


My choice is now 17VAC 160VA and Bias arround 2A should work fine.
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Old 4th December 2019, 08:34 PM   #2310
jervill is offline jervill  United Kingdom
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Thanks guys ��
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