| umut1001 |
| hi everybody.i have to do my university project as soon as possible..i do not have much time..i decided to build a high power (more than 250w rms) 20-20khz full bridge amplifier..because full bridge has advantages..i have 4pieces of ir2110..do you have schematics ..i need help |
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| umut1001 |
| heyy ..is there anyone can help?i bought 36,3volts toroid transformer ir2110 lm311 cd4069 and cd4070..do you have any new ideas to build a better amplifier? |
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| Workhorse |
Some main components LM360, 2X IR2110, NE5532, 4 X IRFP260...+ a Filter Choke
could led you to build a simple H-Bridge Class-D....with single main supply and 2 aux supplies
Here is an Idea...just a block diagram not full circuit.. |
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| umut1001 |
| thank you..i found and bought 5 pieces of lm360..and i made a triangle oscillator with cd4069..i comparated 30khz sinwave with 300khz triangle.and i saw pwm out.i have to do my amplifier..monday is the last day..best regards |
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| Workhorse |
| quote: | Originally posted by umut1001
thank you..i found and bought 5 pieces of lm360..and i made a triangle oscillator with cd4069..i comparated 30khz sinwave with 300khz triangle.and i saw pwm out.i have to do my amplifier..monday is the last day..best regards |
Umut, post your results soon, and also check the polarity of output before implementing NFDB....It is crucial...;) |
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| umut1001 |
hi.it is a bit late cuz my friend post me the photo of oscilloscope late..it is the pwm out.i comparated20khz sin with 200khz triangle..what do you think about this..and how can i put it into the ir2110?which transistor may i use?
thanks for help |
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| Workhorse |
| quote: | Originally posted by umut1001
hi.it is a bit late cuz my friend post me the photo of oscilloscope late..it is the pwm out.i comparated20khz sin with 200khz triangle..what do you think about this..and how can i put it into the ir2110?which transistor may i use?
thanks for help |
Hi UMUT
I think i have already posted the diagram in previous post. Use IRFP250N Mosfet as output device.....
regards,
Kanwar |
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| umut1001 |
| hi.. i decided to make a self oscillating amplifier with +-47volts..i will use st irf540..why using irfp250?is irf540 not enough..and i dont know how to make a volume control..could you help?do you have any schematic about iraudamp?..thank you |
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