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Old 3rd August 2010, 12:28 PM   #521
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Your work can help to other diyers without expirience to not be afraid to build their own amplifier, somethimes only soldering is needed (if someone build and test amplifier circuit before you), and learn ohm's law.
Regards

Last edited by apexaudio; 3rd August 2010 at 12:32 PM.
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Old 3rd August 2010, 12:32 PM   #522
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Originally Posted by apexaudio View Post
This math is correct, and you must use it in electronic, it's basic math not high school,
Regards

hey what do ya say!!!...i got it right!!!...
cheers to me...

then my trafo would 50v+50 x 20amps=2000va!!!...
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Old 3rd August 2010, 01:56 PM   #523
AndrewT is offline AndrewT  Scotland
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without an understanding of Ohm's Law one cannot specify the fuse for a piece of equipment.
Without arithmetic one can forget about following a schematic.

Without arithmetic one can never get beyond copying someone else's explicit instructions.
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regards Andrew T.
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Old 3rd August 2010, 07:35 PM   #524
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Originally Posted by eesbiboi View Post
it's not that i really hate math very much...i just dont like counting NUMBERS...
but for sure, i love to solder...
hahaha.
Hi Ees,
you should love mathematics.
Electronics is full of complex numbers...


Good Luck
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Old 4th August 2010, 04:01 AM   #525
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Originally Posted by Tube Pro View Post
hahaha.
Hi Ees,
you should love mathematics.
Electronics is full of complex numbers...


Good Luck

basic math is what i have...
i dont do amp math...jeje
as you said earlier...it's very complex...
makes my head go round and round...
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Old 4th August 2010, 12:59 PM   #526
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eesbiboi,

what kind of amp you used on your subwoofer? and what kind of speaker inside
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Old 4th August 2010, 01:37 PM   #527
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Originally Posted by rhodrich View Post
eesbiboi,

what kind of amp you used on your subwoofer? and what kind of speaker inside

local diy amp is what i use for my low freqs...jH 181 crown...
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Old 4th August 2010, 03:46 PM   #528
hamub is offline hamub  Zimbabwe
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Default Transformer

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Originally Posted by hamub View Post
if i use it with the b500 how much power can i get considering that after rectifying its gonna be something like 45-0-45. I want to use this transformer till i get a good one
is it ok for this transformer which i rewound the secondary to draw a current of 1.7AMPS at the primary when not loaded for a 220 volts supply. I connect my ammeter in series.
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Old 4th August 2010, 04:40 PM   #529
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Originally Posted by hamub View Post
is it ok for this transformer which i rewound the secondary to draw a current of 1.7AMPS at the primary when not loaded for a 220 volts supply. I connect my ammeter in series.
Transformer efficiency is 98%. That mean lost 2W per 100W power.
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Old 4th August 2010, 05:29 PM   #530
hamub is offline hamub  Zimbabwe
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Originally Posted by apexaudio View Post
Transformer efficiency is 98%. That mean lost 2W per 100W power.
hie Miles, i was asking that is it ok for my transformer to draw 1.7 amps when nothing is connected at the secondary?
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