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Old 14th November 2012, 10:32 PM   #2861
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Default smps ossc card

Hi Exflaco
greetings this is pic of card please can you post crown lt schematic of lt amp for reference
warm regards
andrew
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Old 14th November 2012, 10:50 PM   #2862
exflaco is offline exflaco  Armenia
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Default smps

Ok no problem these pic card another modell but same schem base crown igbt and sg3525 chip
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Old 15th November 2012, 05:38 AM   #2863
manojtm is offline manojtm  India
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Quote:
Quote:
Originally Posted by kirubakaran
hi, every one,
i have etd 29 with 1mm gaped core. how many tuns to 22uh inductor..
thanks in advance
18turns
hi stewin,

i think your calculation is wrong.

if center only 1mm gap AL is @ 125nH (13turns for 22uH)
1mm gap all AL is @ 45nH (22 turns for 22uH)

Regards
MANOJ
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Old 15th November 2012, 08:39 AM   #2864
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Default thanks to sir manoj

Quote:
Originally Posted by manojtm View Post
Hi Hadi,
revised AUD600 file
Modified field
change 1K 1% resistor to 1K trim POT
change two 47K resistor to one 100K 1W
change 220nF/100v to 10uF/25v
add thermal switch point TS1 & TS2

Regards
MANOJ
thanks for every thing you do my friend
have a good day
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Old 15th November 2012, 10:06 AM   #2865
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sir manoj
i have uf4004
is that ok ?
are you series about 15 OHM resistor near the bias ?
may be 1/5 OHM
i have 1k trimer too
IRFP250 can work in 400KHZ ?
hove can i find out amp ferequence ?
i need a frequence meter for this ?
i can work with protel altium
what is your program ?
please share your main file to me.
thanks

Last edited by Hadighorbani; 15th November 2012 at 10:23 AM.
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Old 15th November 2012, 10:26 AM   #2866
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Location: cebu city
hi!...sir andrewlebon can u plz share to me your bd139 and 140 ill try to build...tnx sir send it to my e-mail johncarlo_seno0312@yahoo.com
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Old 15th November 2012, 11:14 AM   #2867
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what value for LOW PASS FILTER 3 pair mr.lebon can plz share to me
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Old 15th November 2012, 12:37 PM   #2868
manojtm is offline manojtm  India
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Quote:
sir manoj
i have uf4004
is that ok ?
are you series about 15 OHM resistor near the bias ?
may be 1/5 OHM
i have 1k trimer too
IRFP250 can work in 400KHZ ?
hove can i find out amp ferequence ?
i need a frequence meter for this ?
i can work with protel altium
what is your program ?
please share your main file to me.
thanks
Hi Hadi,

you can use UF4004 or any ultra fast diode with min 2A capacity.
not 15 Ohm it is 1.5 Ohm 0.5W resistor
i am not tested IRFP250 @ 400KHz.tested only 250KHz no problem found tested 300KHz working but over heated and sound not good may be gate resistor value is high(39 Ohm) anyway further i am not experimented.
for 1K resistor you will get @250KHz you need a DSO(digital storage oscilloscope)for finding frequency

Regards
MANOJ
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Old 15th November 2012, 12:41 PM   #2869
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you can use UF4004 or any ultra fast diode with min 2A capacity.
How many amperes uf4004
warm regards
andrew lebon
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Old 15th November 2012, 01:07 PM   #2870
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can ypu please share your protel files ?
i need change footprint for some parts like capacitors.
thanks
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