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Old 16th August 2012, 08:51 AM   #741
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sir bora,
what about the diode joselito put out to rail in reverse polarity,do you find this a good practice?
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Old 16th August 2012, 09:13 AM   #742
alex mm is offline alex mm  Europe
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..... you have wrong direction on those diodes ,they must be reversed
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Old 16th August 2012, 11:17 AM   #743
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alex,
what does he mean by this?
Dear all,

The amplifier is working good now, clear and very strong. I added 2 more pair of cap at PSU total now is 100,000uf per rail. In addition, I installed 6amps 1000 volts diodes at the output to rails in reverse polarity to avoid loading the amp from speaker
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Old 16th August 2012, 12:32 PM   #744
AndrewT is offline AndrewT  Scotland
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He means that the diodes do not pass Power Supply rail current directly to Zero Volts.
Reverse polarity requires the diodes to block current flow.
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Old 16th August 2012, 12:42 PM   #745
AJT is offline AJT  Philippines
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Quote:
Originally Posted by engel dela pena View Post
alex,
what does he mean by this?
Dear all,

The amplifier is working good now, clear and very strong. I added 2 more pair of cap at PSU total now is 100,000uf per rail. In addition, I installed 6amps 1000 volts diodes at the output to rails in reverse polarity to avoid loading the amp from speaker

Engel,

the diodes are there to protect the collector emitter of the output transistors from back emf of the speakers.....these diodes return the energy back to the psu rails....if those diodes were not there, these back emf have nowhere to go but thru the output trannies....
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Old 16th August 2012, 12:58 PM   #746
alex mm is offline alex mm  Europe
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.......I mean this
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Old 22nd February 2013, 05:09 AM   #747
Wasim is offline Wasim  Pakistan
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what is the address of dr bora's website ? this link is not working Abshost.net

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Old 22nd February 2013, 05:16 AM   #748
naf is online now naf  Indonesia
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:::Borina Amaterska Svastara:::
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Old 27th February 2013, 01:08 PM   #749
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Today is the opening of the new forum on boraomega web page.

:::Borina Amaterska Svastara:::
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Old 14th September 2013, 07:49 PM   #750
44250 is offline 44250  Serbia
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ome-sigma amplifier

HomeMadeAudioProject: OME SIGMA 2 - YouTube

OME SIGMA (prvi put u ku?i) - YouTube

OME Sigma - HomeMadeAudioProject - YouTube
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