Hello all what is the inductance of t-106 26 or t-106 52 with 1mm cut gap . I have wound 36turns ?
Bad design
basically it does not bring anything new alone, desires to sell your Pcb, and with its anti oscillation protection it just makes it too noisy ……… ..
basically it does not bring anything new alone, desires to sell your Pcb, and with its anti oscillation protection it just makes it too noisy ……… ..
Hello everyone 
I like this simple UcD with IR2110 amplifier so i build it.
Everything it's fine, the amplifier was working from the first time i power it up. The offset was about 200-300mV and then i insert a 47uF capacitor in series with R7 (820R) So now the offset is 4-8mV at most.
The only problem with amplifier is that the self oscilating frequency is to low, about 120KHz. From what i read the self oscilationg frequency normally, at this schematic, is around 260KHz.
How can i increase this frecvency ?
I try to change C1 from 330pF to 100pF but no luck 🙁
Is it possible to increase this frecvency to about 400KHz just like original schematic made by Bruno himself ? 😕
I use IRFP4220.
Any advice is highly appreciated !
I like this simple UcD with IR2110 amplifier so i build it.
Everything it's fine, the amplifier was working from the first time i power it up. The offset was about 200-300mV and then i insert a 47uF capacitor in series with R7 (820R) So now the offset is 4-8mV at most.
The only problem with amplifier is that the self oscilating frequency is to low, about 120KHz. From what i read the self oscilationg frequency normally, at this schematic, is around 260KHz.
How can i increase this frecvency ?
I try to change C1 from 330pF to 100pF but no luck 🙁
Is it possible to increase this frecvency to about 400KHz just like original schematic made by Bruno himself ? 😕
I use IRFP4220.
Any advice is highly appreciated !
I dont know but the output jump to supply voltages after some 10ms . It simulate and work well within that 10ms
Can someone please send me the needed PDF files of irs3000 detex audio with 4 mosfets.
I want to try to make this class d amp and see how it performs for the first time.. My email is jlungumax@gmail.com . Thanks in advance
I want to try to make this class d amp and see how it performs for the first time.. My email is jlungumax@gmail.com . Thanks in advance
Hello all kartinos new amplifier
have fun all and kindly post your comments and ideas
https://m.facebook.com/groups/859707677375336/permalink/5113445042001557/
have fun all and kindly post your comments and ideas
https://m.facebook.com/groups/859707677375336/permalink/5113445042001557/
Its a private group, schematic is not for whole public
please do not post here any links without permit from the group
please do not post here any links without permit from the group
Thanks, I go build a test version, as a front end. doe more on extra examen extra feedback.
hi all , i have gone back to basis and made this amp in smd style . also i have added a buffer to assist drive the fets
The amp is working fine , the main issue is the hf hissing noise.
i prefer this amp rather than sigma delta because it is stable even with no load while woking.
kindly any opinion will be appreciated .
The amp is working fine , the main issue is the hf hissing noise.
i prefer this amp rather than sigma delta because it is stable even with no load while woking.
kindly any opinion will be appreciated .
Attachments
thanks bro for the reply, the amp is ucd ,
the reason i have included buffers is to assist the ir2110 ,. in the previous versions i used without buffer and the ir2110 used to heat alot
even though i had used 22ohms resistor gate drive.
also i wanted to drive multiple fets to be able to drive 1ohm to 0.8ohm load like car amplifiers . e.g taramps or many latest car amplifiers which use +/-70vlts to +/-160vlts fullbridge and supports up to 0.5ohms .
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