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Old 20th July 2012, 01:40 AM   #1211
chas1 is offline chas1  Dominican Republic
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Get the datasheet for tl494 and take a good look,the difference between the pins you need to use and the SG series in very little,google for an atx power supply schematic it might help as most of them use the TL494.
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Old 20th July 2012, 01:46 AM   #1212
chas1 is offline chas1  Dominican Republic
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Here is another circuit that uses the tl494 and it powers a amplifier:

DC to DC Converter 12V to 38V car amplifier power supply ? Power Supply Circuits
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Old 20th July 2012, 03:43 AM   #1213
Krisfr is offline Krisfr  United States
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Making car amplifier SMPS with tl494 + DC Protection
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Old 20th July 2012, 07:15 PM   #1214
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Default thanks for your helping

Quote:
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Thanks friend
I see that befor
That is avery big treat
Are you have a corect shematic in this site that can be ofer to me?
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Old 20th July 2012, 07:17 PM   #1215
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Originally Posted by chas1 View Post
Here is another circuit that uses the tl494 and it powers a amplifier:

DC to DC Converter 12V to 38V car amplifier power supply ? Power Supply Circuits
You are a good man
Thanks
I will see and say what i findout from this site
Thanks
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Old 20th July 2012, 07:33 PM   #1216
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Originally Posted by chas1 View Post
Here is another circuit that uses the tl494 and it powers a amplifier:

DC to DC Converter 12V to 38V car amplifier power supply ? Power Supply Circuits
You are a good man
Thanks
I will see and say what i findout from this site
Thanks
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Old 23rd July 2012, 11:11 PM   #1217
Krisfr is offline Krisfr  United States
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Anybody know of a good source of tape that is used for making smps transformers?
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Old 24th July 2012, 12:24 AM   #1218
chas1 is offline chas1  Dominican Republic
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3m,I purchased 3 rolls 2 in. wide(yellow) @35.00ea. other than that black electrical tape will do the trick.
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Last edited by chas1; 24th July 2012 at 12:27 AM.
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Old 24th July 2012, 01:24 AM   #1219
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I searched for high temperature tape for myself about a month ago. This was the best deal i found. But i did not buy any yet. I was also thinking of using plain clear packing tape. It is $1 a roll 2“ wide and made of mylar.

http://www.1stmaskingtape.com/Blue_p...sking_tape.php

Blue Masking Tape can withstand temperature up to 400F/204C. It is packaged in a 3" core and is 72 yards long.
1/2" wide x 72 yards $5

Green masking tape is made of 2 mil thick polyester and 1.5 mil thick silicone adhesive. It can withstand temperature

up to 400F/204C. It is packaged in a 3" core and is 36 yards long. This is our most popular powder tape.
1/2" wide x 36 yards $3

Red masking tape is made of 1 mil thick polyester material and 3 mil thick silicone adhesive. It can withstand

temperature up to 400F/204C. It is packaged in a 3" core and is 36 yards long
1/2" wide x 72 yards $8

P.S. Mylar is a high temperature plastic.

Last edited by powerbob; 24th July 2012 at 01:25 AM. Reason: yes
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Old 24th July 2012, 10:40 AM   #1220
chas1 is offline chas1  Dominican Republic
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There are many tapes that can be used, I just use the 3m brand and you can also use double or triple insulated AWG or Litz wire with outer cover.By the way 4mm thickness a layer eats up a lot of bobbin area,less room for wire,windings are futher from each other could add to leakage inductance and capacitance.
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Last edited by chas1; 24th July 2012 at 10:49 AM.
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