hi all busy perfecting smps and ucd semi discreet .that is lm 311 and ir2110 in ucd amp. all is well the amp is o.k and cool even at 2 ohmsbut ocp protections are the ones holding me back .i have made lorylaci ucd version with protection ,it works well but trips very soon / early. i think when the amp is 60% loud .
i wanted it to reach about 92% at 2ohm per channel because i wanted to use full bridge +/-70vlts fets used are a pair of irfb4227 per channel
I'm can't help, but maybe you can help me. I need the Ir2110 part in Eagle library format. I apparently can't build parts using the free version I have. At least I think that's the hold up. Many functions are dumbed down.
I think this is a full bridge. Can you share all these detailed files with me? Lay6 or pdf.
Nothing just reduce number of mosfet.
Using old stock IRFP4242 still will get plenty power.
hi all busy perfecting smps and ucd semi discreet .that is lm 311 and ir2110 in ucd amp. all is well the amp is o.k and cool even at 2 ohms
i wanted it to reach about 92% at 2ohm per channel because i wanted to use full bridge +/-70vlts fets used are a pair of irfb4227 per channel
Try reduce your current sensor sensitivity by reduce R18.
Maybe half of it or more.
Hi, Kartiño, could you show the diagram of the changes that the (My latest D2KNeo) What changes do you have with which voltage, amperage and frequency are you working on, what improvements does. You can explain more in detail your work for the community, a photo does not say much. You can share your schema in LTSpice.
An externally hosted image should be here but it was not working when we last tested it.
I want to use a higher supply + -140, use fda59n30 pair. I need to change anything to use it?
D
Deleted member 148505
I have something faster if you like.
I make this as I am not happy with the output of two legs of resistor under LTP
ltspice file is attached in the PDF also.
Good afternoon kartino The resistor r31 is burning very fast and does not oscillate the amplifier can help me. And I think the "q4" should not be grounded. View attachment class d 4r1000.BMP
hi all , a low power version class d smd and +/- 45volts maximum ,
i have tested both boards
have fun all
http://www.diyaudio.com/forums/class-d/205654-ultra-simple-class-d-54.html#post4916694
diysmps
i have tested both boards
have fun all
http://www.diyaudio.com/forums/class-d/205654-ultra-simple-class-d-54.html#post4916694
diysmps
I recently finished my audio smps. With 2 irfp460 I had 1kw in test with resistive load. With 4 irfp460 2kw 5min same test. Big toroidal transformer. 50khz. Why many people say 600w with 2 irfp460 is the limit?
Apex d200 is the best quality and stability. I took the principle of d200 I added a fast protection i use irfp250n 100ohm gate m ur1560 parallel to each mosfet 30uh big toroid sendust core. For 74hc00n i use 4 inverter not 2 to increase dead time. 10k 2w resistor serie 5.6v zener. 7812 extra bias 12v. And it works wonderfully with + -95v 4ohm load resistive 50hz frequency. Sound is very good. frequency is 200khz
Apex d200 is the best quality and stability. I took the principle of d200 I added a fast protection i use irfp250n 100ohm gate m ur1560 parallel to each mosfet 30uh big toroid sendust core. For 74hc00n i use 4 inverter not 2 to increase dead time. 10k 2w resistor serie 5.6v zener. 7812 extra bias 12v. And it works wonderfully with + -95v 4ohm load resistive 50hz frequency. Sound is very good. frequency is 200khz
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