@dear silvio
could you help me calculate the right gate resistor for mosfets
I don't know 2 things
first one what are the correct values for rise time and fall time of IR2110?
second what happens when I use two mosfets in parallel? (should I double the calculated value)
I'll appriciate any help
Thanks Dear Silvio for your helps
So it turned out that my multi meter was reading incorrectly (Broken) and the temp on the back metal part of mosfets never reach 50 degrees with a low value snubbers (I use another multi meter)
So now I need to know how exactly I can choose the best values for...
Hi again
I manage to build a full bridge inverter to drive my amplifier in the car
everything is good except mosfet's overheating under load
here's a picture of primary transformer without any output load :
*** Oscilloscope Volt/Div is on 2 (((Channel 2))) and the probe is set to X10
and...
@ Dear Silvio
Here's a video clip from the Gate of mosfets at the same time according to Negative :
https://youtu.be/na7jK3TaPWM
Here's some shots of the transformer primaries at the same time according to Positive :
both channel is on 0.5 Volt/Div and X10 on probe.
The same test with...
Here you go
This pictures are from the side of primary that the mosfets connected to it gets really hot with high load :
Without any load :
With 37.5 Ohms load :
The other side of primary that stays cool:
Without load:
With 37.5 Ohms load :
I test my inverter with my car battery and here's the result :
Without load : 172V in output << 12.9V input
23W load : 152V in output << 12.9V input
65W load : 147V in output << 12.87V input
100W load : 145V in output << 12.75V input
230W load : 132V in output << 12.56V input
370W load : 118V...
Hey Guys
I'm working on a 800W Smps to drive my Amps in my car but I'd like to test it out fully before I use it in my car
So I'm looking for a power supply to simulate car voltage to test and use the audio system at home (13.5 to 14.7V @ about 80A)
Which solution do you guys recommend:
1-...
Hello dear Silvio
I test my New 400W amp with this SMPS and in output I get a bit fuzzy signal
But with old 50Hz transformer I get a completely clean output waves
Is this normal???
If not, is there any way to fix this ????
I use this one also taken out from a PC power supply ( I put it next to an IRFP460 for you to get it's size )
Start with 22 turns and yes, just connect it's wending to point 2 that goes to protection board
Here's the winding order :
1/2 primary
1/2 secondary
1/2 secondary
1/2 primary
You can wind it ether Clockwise or Counter Clockwise but you have to do all your winding with only one of them
point 1 is a jumper that will pass through your Current core ( this is for Protection board and if...
Thanks for your replies.
I haven't share any picture yet because I'm still on prototype and as soon as I finish all my tests, I'm going to make my own PCB and will share it here
Here is 2 pictures of my prototype SMPS & AMP
*Don't let the pictures fool you because both of those are...
I didn't have a 500w load exactly but I did 2 test for you:
one with 370W :
and another one with 640W :
Volt division is on 1 and the probe attenuation is on 1x
Hello guys
Here's Schematic of ludo SMPS with all modifications
I have a problem with protection board
No matter what I set the value of trimmer on protection board I couldn't trigger the protection unit with connections of any load (Even 1500W)
but at start up I can easily...