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Old 5th April 2004, 12:31 AM   #1
Risto80 is offline Risto80  Macedonia
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Lightbulb Making car amplifier SMPS with tl494 + DC Protection
Hello to every body.
I have made plenty car amplifiers + smps based on sg3525.I have read all this forums and any body have full schematic for making smps with tl494 + DC protection for loudspeaker than temperatur protection etc.

Here some pictures of my car amplifier + smps 1x100w.If there interesting I will put thr pcb on this site.The smps give +/-30V 5A.
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Old 5th April 2004, 10:58 AM   #2
Immo_G is offline Immo_G  Australia
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Looks pretty neat, i'd be interested in the SMPS pcb, been playing around with designs for a few months, one day i'll actually make one
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Old 5th April 2004, 12:48 PM   #3
speaker is offline speaker  United States
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Default Re: Making car amplifier SMPS with tl494 + DC Protection
Quote:
Originally posted by Risto80

Here some pictures of my car amplifier + smps 1x100w.If there interesting I will put thr pcb on this site.The smps give +/-30V 5A.

Very nice work. I'd be interested in seeing the schematic too. BTW, what is the switching frequency?

speaker
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Old 5th April 2004, 03:11 PM   #4
Risto80 is offline Risto80  Macedonia
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Default OK
Ok I will put schematic in .pdf format of .jpg or in Protel99SE format.

Now I am not home but tonight I will put the pcb and schematic of SMPS.

sorry for my bad english
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Old 5th April 2004, 03:46 PM   #5
Risto80 is offline Risto80  Macedonia
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Default HERE IT IS THE SMPS
Just download thr .zip file and there you will find pcb,schematic and lot of pictures of smps.The pictures have low quality becous it was pictured with Sonyericsson T610 phone.

Please now tell me what do you thing about my design.
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File Type: zip smps schematic.zip (70.6 KB, 11245 views)
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Old 5th April 2004, 03:49 PM   #6
Risto80 is offline Risto80  Macedonia
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Default THE BCB TOP
HERE IT IS THE TOP LAYER OF smps PCB
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File Type: zip pcb smps top.zip (37.0 KB, 5576 views)
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Old 5th April 2004, 03:51 PM   #7
Risto80 is offline Risto80  Macedonia
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Default hERE IT IS pcb BOTTOM LAYER
hERE IT IS pcb BOTTOM LAYER
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File Type: zip pcb smps bottom.zip (27.9 KB, 5363 views)
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Old 5th April 2004, 03:56 PM   #8
Risto80 is offline Risto80  Macedonia
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Default AND PICTURES
AND PICTURES OF SMPS
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Old 5th April 2004, 09:46 PM   #9
Risto80 is offline Risto80  Macedonia
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Default Amplifier 1x100W - PCB
Ok that it. If you have any questions about making feritte toroid and basic calculating just ask.Here is the final part the car amplifier pcb zip file
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File Type: zip car amplifier 1x100w - pcb.zip (52.0 KB, 6397 views)
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Old 7th April 2004, 09:43 PM   #10
Grucho is offline Grucho  Croatia
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Default Re: Amplifier 1x100W - PCB
Quote:
Originally posted by Risto80
Ok that it. If you have any questions about making feritte toroid and basic calculating just ask.
Hi .

Well i have couple of questions about smps.

1) How many turns have u used for prim. and sec ?
2) Did you tryed to remove 4n35 and force duty cycle to 50% and then measure output voltage ?

I ask this because I have maded similar smps primary->4x4, secondary 11x11 . When I remove 4n35 and force sg3525 to duty 50% I got 60x60 volts .

Greetings
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