Add emitorových resistance 0.22Ω. I see that the effect of temperature on the reduction of current is smaller!
Emitter resistors suppress thermal effects RDS and highlight temperature effects VGS!
Emitter resistors suppress thermal effects RDS and highlight temperature effects VGS!
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Nice and decent post, perfect sense of humour. Thank you, Lumba. It could not be said better.
Cheers,
Pavel
Add emitorových resistance 0.6Ω. Switched zener diodes. Emitter resistors suppress thermal effects RDS and highlight temperature effects VGS!
Negative branch has no temperature dependence. Positive branch at a higher temperature, more current flows! Now there is an explosion!
Negative branch has no temperature dependence. Positive branch at a higher temperature, more current flows! Now there is an explosion!
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I can increase the emitter resistors to explode the negative branch.
I can generalize:
1) RE = 0Ω, the biggest positive influence of the temperature dependence RDS.
2) RE ≥ RDS, the suppression of the positive temperature dependence of the RDS and highlight the negative temperature dependence of VGS.
3) RE> RDS, negative temperature dependence VGS = unstable condition! Stability must be addressed else means.
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Check your translator from Czech to English, you are mixing Czech and English language together.
Federmann,
let me tell you, the RDSon tempco effect is only valid when you are saturating the MOSFET, then you have Negative tempco, this works ONLY for Class-D / Switch Mode Power Supplies!
In the linear mode the RDSon has NO EFFECT on the tempco stability!
Cheers Michael
You're right, but compensate for this dependency transistor T109. The SPICE simulation is used to indicate only the dependence of terminal transistors.
Federmann,
The point is that you refuse to answer the serious questions:
HAVE YOU BUILT, TESTED, AND LISTENED TO THIS AMPLIFIER?
You have been asked this question by Chris (Anatech) and others many times! You have NOT yet answered. Therefore is no surprise that most readers are growing tired of your claims when you refuse to produce proper evidence (other than simulations) to support your claims.
When you ignore such questions you are going to be suspected of all of the charges which have been made against you. It is clear from the criticism of your design that well experienced designers and others have serious doubts regarding the safety of this circuit. Only by publishing screen pictures of your test results and by showing the amplifier in a full working condition can you even begin to save your situation.
The point is that you refuse to answer the serious questions:
HAVE YOU BUILT, TESTED, AND LISTENED TO THIS AMPLIFIER?
You have been asked this question by Chris (Anatech) and others many times! You have NOT yet answered. Therefore is no surprise that most readers are growing tired of your claims when you refuse to produce proper evidence (other than simulations) to support your claims.
When you ignore such questions you are going to be suspected of all of the charges which have been made against you. It is clear from the criticism of your design that well experienced designers and others have serious doubts regarding the safety of this circuit. Only by publishing screen pictures of your test results and by showing the amplifier in a full working condition can you even begin to save your situation.
I repeated several times, what is the current situation, which I can publish.
I have plenty of measured transistors. I'm putting together individual modules.
Modules for various performances, impedance and voltage. Only then will set their parameters, then I can write more.
PMA is certainly right, but the simulations SPICE_kompatibile usually very not different.
Preparation for construction.
I have plenty of measured transistors. I'm putting together individual modules.
Modules for various performances, impedance and voltage. Only then will set their parameters, then I can write more.
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1) For each module must be selected same IRFP240 and appropriate Zener diode.
2) For each module must be selected same IRFP9240 and appropriate Zener diode.
3) Then optimally set 2SC3503, and adjusted its emitter resistor 15R.
Results will be published after a particular measurement. Set and measure 5 modules.
I'm sorry that I can not tell more.
I suspect the time you are spending posting all these simulations and arguing with your detractors would be FAR better spent actually building the amps and LISTENING to them in comparison with some accepted reference amp or amps.
And then getting the amp listened to by others with top top systems. When they lay $$ down for a copy - you KNOW it works well.
Regards, Allen
And then getting the amp listened to by others with top top systems. When they lay $$ down for a copy - you KNOW it works well.
Regards, Allen
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