It's easy,we make it ourselves,I think it is simple way to get stable amp,full rage or subwoofer amp.
One stupid question ...
Does IRS2092 go under the UCD patent? beeing selfoscilating ?
regards,
savu
Does IRS2092 go under the UCD patent? beeing selfoscilating ?
regards,
savu
I think maybe you are right,self oscillating circuit,added switch protect function.stable and easy.
I think that's a problem of IR, not yours.
Normally, the license costs are included in the price of the IC.
I know it from MP3-Decoder-DSPs, the license for use of mp3 is included.
Not, of course. UCD: phaseshift self-oscillating, with single feedback after filter.
But IRS2092 is an IC, not an amplifier. You can configure it to be the part of an UCD.
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so practicaly, every class d amp that has a feedback after the filter and its selfoscilating is a UCD amp
thanks Pafi
thanks Pafi
Yes, if oscillation is made by phase shift (not hysteresis). But read the statements of the patent, if you want to know exactly!
"so practicaly, every class d amp that has a feedback after the filter and its selfoscilating is a UCD amp"
-> I dont really think so, coz the UCD patent exactly describes the RC feedback circuitry on comparator input to obtain controlled selfoscillation.
quote:
"the control circuit comprises a first element in the form of a resistor, for controlling said gain and a second element, in the form of a capacitance in series with a resistor, for controlling said alternately switching"
I have invented a different self-oszillation post filter feedback topology. The "second element" is not part of it, at least not in this form. So thats why I claim that my circuit is not UCD covered.
http://www.diyaudio.com/forums/clas...scillating-post-filter-feedback-topology.html
Also, the feedback transfer function H(s) described in the patent is different in my case as a consequence.
This topology is not "rocket-science", and it has the drawback of the additional air coil, but it can be optimized to work well over a wide load impedance / phase range. I m currently working to realize this as a full bridge with 175V bus....
-> I dont really think so, coz the UCD patent exactly describes the RC feedback circuitry on comparator input to obtain controlled selfoscillation.
quote:
"the control circuit comprises a first element in the form of a resistor, for controlling said gain and a second element, in the form of a capacitance in series with a resistor, for controlling said alternately switching"
I have invented a different self-oszillation post filter feedback topology. The "second element" is not part of it, at least not in this form. So thats why I claim that my circuit is not UCD covered.
http://www.diyaudio.com/forums/clas...scillating-post-filter-feedback-topology.html
Also, the feedback transfer function H(s) described in the patent is different in my case as a consequence.
This topology is not "rocket-science", and it has the drawback of the additional air coil, but it can be optimized to work well over a wide load impedance / phase range. I m currently working to realize this as a full bridge with 175V bus....
Hello Saviu!
The schematic is ready (hand-written) and I am now entering this schematic into a schematic and layout software...
The schematic is ready (hand-written) and I am now entering this schematic into a schematic and layout software...
This is just the 3rd claim (wich is only the subclaim of the 2nd), but if a circuit meets any of the claims, then it is covered by the patent.
It's useless to alternate the feedback network, the 1st claim still covers it.
Sorry!
espacenet — Claims
@Pafi:
I see your point, think I need to check this into more detail but for today i m too tired....
Just assume, u re right, then why is there so much talking of the specific RC-circuit and its transfer function within US 7113038 B2 ? Is this patent valid for Europe also (hope not)? and how come one guy can get such a general patent? Doesn't it look like, for example, Bill Gates or another guy suddenly claiming patent for ALL operating systems..
I see your point, think I need to check this into more detail but for today i m too tired....
Just assume, u re right, then why is there so much talking of the specific RC-circuit and its transfer function within US 7113038 B2 ? Is this patent valid for Europe also (hope not)? and how come one guy can get such a general patent? Doesn't it look like, for example, Bill Gates or another guy suddenly claiming patent for ALL operating systems..
@ Thomas
He cannot, unless he bribes the right people with the right amount (witch i think that Mr. Bruno didn't do).
PS: happy to hear that you're amp is in the final stages.
regards,
savu
He cannot, unless he bribes the right people with the right amount (witch i think that Mr. Bruno didn't do).
PS: happy to hear that you're amp is in the final stages.
regards,
savu
@savu:
No, my amp is not in the final stage - with layout and building / power up the most work is still in front. If the patent is as powerful and general as I fear it is, my idea is worthless anyway (need still to check this).... I will continue only if it make sense.....
No, my amp is not in the final stage - with layout and building / power up the most work is still in front. If the patent is as powerful and general as I fear it is, my idea is worthless anyway (need still to check this).... I will continue only if it make sense.....
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