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Old 14th March 2014, 09:53 AM   #1
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Default help to make a simple psu for my LM3886

hai all,
i want to make a psu for myLM3886 amplifier. some components are already at my hand,
1,4 x MUR860
2,2 x 15000mfd 63V caps
trafo 22 -0-22 4 amp
can anyone help me to complete this psu .
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Old 14th March 2014, 12:16 PM   #2
DUG is offline DUG  Canada
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You will also need a line voltage rated fuse holder and switch for the AC input side.

And either a proper AC power connector to go with "computer power cords" or a AC cable chassis mount clamp.

Look at photos in this section. Picture is worth a thousand words.
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Old 14th March 2014, 04:43 PM   #3
AndrewT is offline AndrewT  Scotland
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Read Decibel Dungeon and ESP for good background on turning Mains AC into low voltage DC.
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Old 15th March 2014, 04:51 AM   #4
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my old setup is here. my plan is replace this amp board with mew LM3886. want to replace psu also,using MUR860
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Old 15th March 2014, 09:02 AM   #5
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Quote:
Originally Posted by arunpanchami View Post
hai all,
i want to make a psu for myLM3886 amplifier. some components are already at my hand,
1,4 x MUR860
2,2 x 15000mfd 63V caps
trafo 22 -0-22 4 amp
can anyone help me to complete this psu .
15000 mFd as in mili farad???

What kind of PSU are you looking for? Regulated, CRC, C?
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Old 15th March 2014, 12:39 PM   #6
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i am a newborn baby in DIY.
BTW i only want a efficient power supply for LM3886 2 mono block amp.my trafo is EI 22-0-22 4A, 4 x MUR860 and few other... parts specification are here.
Alcon 15,000uF, 63V Electrolytic Capacitor
MUR860 (DIODE, ULTRA-FAST, 8A, 600V)
Elcom - RFI/EMI Filter, 6 Amp (EP 326 E / EP-322-6)
Heat Sink-DAC-196-50
MX 4 mm PANEL MOUNTING TERMINAL 15 Amp (GOLD PLATED) - PAIR
MX RCA Connector Gold Plated with Teflon (Heavy Duty) - Pair
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Old 15th March 2014, 02:04 PM   #7
AndrewT is offline AndrewT  Scotland
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MFD is typical of USA manufactured capacitors.
It should read F = micro Farad
M = Mega
F= Farad
D= ?
MFD is nonsense.
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