UCD 25 watts to 1200 watts using 2 mosfets

[andrewlebon]

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

 

[exflaco]

smps

Ok no problem these pic card another modell but same schem base crown igbt and sg3525 chip

 

[manojtm]

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

 

[Hadighorbani]

thanks to sir manoj

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

 

[Hadighorbani]

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

 

[john carlo]

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

 

[john carlo]

what value for LOW PASS FILTER 3 pair mr.lebon can plz share to me

 

[manojtm]

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

 

[andrewlebon]

you can use UF4004 or any ultra fast diode with min 2A capacity.
How many amperes uf4004
warm regards
andrew lebon

 

[Hadighorbani]

can ypu please share your protel files ?
i need change footprint for some parts like capacitors.
thanks

 

[Hadighorbani]

you can use UF4004 or any ultra fast diode with min 2A capacity.
How many amperes uf4004
warm regards
andrew lebon

uf400X is just 1 amper and mur120 too

 

[john carlo]

plz share bd139 140 3 pairs mr nano. my e-mail johncarlo_seno0312@yahoo.com

 

[irvynejay]

uf400X/mur120 =1 A but it will work
if you want 2 ampere use mur220
http://www.onsemi.com/pub_link/Collateral/MUR220-D.PDF

 

[manojtm]

uf400X/mur120 =1 A but it will work

Hi Hadi,

Uf400x will work but it will heat up little. use parallel 2xUF400x diodes. use leg height min. 5mm length both side.


Regards
MANOJ

 

[manojtm]

can ypu please share your protel files ?

Hi hadi,

i am not using protel. i used only sprint layout 5.0

Regards
MANOJ

 

[manojtm]

Hi all

my new AUD600 Rev. 1.2 with limiter using NJM2761. Very simple circuit.

regards
manoj

 

[Hadighorbani]

thanks to sir manoj

Hi all

my new AUD600 Rev. 1.2 with limiter using NJM2761. Very simple circuit.

regards
manoj

HI dear friend
thanks for your reply
i creat PCB for ver1.1
can you please share your new version ?
and please send to my email your sprint layout 5.0 files.
my email is Hadi.ghr.e.61@gmail.com
thanks sir manoj
have a nice time

 

[manojtm]

Hi andrew & apex

you know this circuit got from solid state vertex amp thread (APEX)

OUT shows what?? and +HV supply ??

from speaker OR pre out signal, can i use with class D amp

Regards
MANOJ

 

[andrewlebon]

this is from H900 out is SPEAKER OUTPUT hv is high voltage rail of h class supply

 

[manojtm]

Hi andrew,

thanks for replay

can i use +75v supply for +HV line

Regards
MANOJ