Some one ask us develop new PA amp
My friend who manufacturing public address amplifier ask us to develop one new type amp,it will boost out signal voltage by high frequency ferrite EE transformer.
I think when we boost single frequency it will easy ,but audio signal and class D half bridge maybe hard to do.
Maybe class T have fixed duty cycle,should make it reality easily.
Please give us good ideas.
My friend who manufacturing public address amplifier ask us to develop one new type amp,it will boost out signal voltage by high frequency ferrite EE transformer.
I think when we boost single frequency it will easy ,but audio signal and class D half bridge maybe hard to do.
Maybe class T have fixed duty cycle,should make it reality easily.
Please give us good ideas.
Attachments
Oh!it's good idea but we have to use bigger transformer,if we use high frequency ferrite transformer before LC filter,the volume will very little.
No, the transformer size ("the volume") will be the same... Small transformer will go into saturation, whether it will be placed after or before LC filter 😉
Oh!no,no,if we use a PQ3230 ferrite core it can deliver 400W power at 400Khz frequency under HB topic ,but when we use a toroidal transformer transit 400W power,10 times size.
Independent on the switching frequency, in your schematic the output transformer must be able to transfer energy of the audio frequency (starting from 20Hz). With size of the mentioned PQ3230 core it is only possible to transfer about max 4-6 Watts in audio band... 😉
Sure, you will try to build this schematic anyway... please, keep us posting 😉
Oh!we have to try it many times ,can you give us calculate methods for full range amp
the maximum flux swing at the maximum output power and lowest freq. will saturate almost any kind of ferrite cores, you must consider a FeSi transformer similar with those used on the output stage of the valve amplifiers. the transformer should not saturate under large DC component.
Good idea!we think if the FeSi transformer can be used the ferrite core also works well,we can use air gap to suppress saturate.
I think the core question in this topology is how can we boost the output voltage and loader impedance matching .
I think we should talk about the output model ,and find calculating methods.
Hi,
These are interesting boards indeed !
Anyone tried the "FULL FUNCTION KITS" setup?
Any insights on wiring them as 4SE(4*145W/ch)?
I wonder how will it do for Bi-amping with 1-2 of these boards together?
Any info on the TAS5613 versions?
Thank you,
Gal
These are interesting boards indeed !
Anyone tried the "FULL FUNCTION KITS" setup?
Any insights on wiring them as 4SE(4*145W/ch)?
I wonder how will it do for Bi-amping with 1-2 of these boards together?
Any info on the TAS5613 versions?
Thank you,
Gal
I am getting a hiss out of my pre amp with volume very high is there a way to filter off this hiss with out lossing volume?
Any update?
I'd really like to know how to connect these modules as 4ch or 2.1ch before I order the Tas5613 variant.
Gal
4 channel and 2.1 channel connect method
Hi! Gal,
I upload wire connect and setting method here,pls check it,if you have another questions ,pls connect us.
Hi! Gal,
I upload wire connect and setting method here,pls check it,if you have another questions ,pls connect us.
This board works well,bigger heatsink than first version,single dc power supply or alone preamp power supply.
Thank you very much ! 😛
These looks great and very useful for many applications.
Are the "2channel boards" that split the output into two speakers included in the "FULL FUNCTION" kit or needed to be ordered separately?
Can I order one kit based on the Tas5613?
Thank you again,
Gal
Ok!"2 channel boards" split the output into two channel,I think I can send
it to you as gift when you order some FULL FUNCTION AMP BOARD.
Thanks!
Sherly
- Status
- Not open for further replies.