@Lester, Cornboy
Regarding gate voltage:
i.e. IRFP460
Data sheet: 0.27Ohm at VGS 10V and 10A
The FET is rated for 20A permanent or 80A pulsed DC current.
----------------------
The 10V VGS will be suffitient for 60A (0.75Ohm). Above RDSon will increase considerabyl (2.0 Ohm at 80A) up to thermal FET death.
Increasing VGS above 10V will help in the range 60A ..80A to keep the RDSon below 0.75Ohm
-------------------------
Conclusion:
Higher VGS then specified in datasheet:
@ALL: I do not feel comfortable to pollute this thread being dedicated to pulsed coils. I am afrait most of you do not really know on stuff I talk above exactly in this post. We might need to find a solution for this.
@qvision!
Amazing you got this result within short time! These effects are a building stone to be added to UFOs asymmetric motors. In the past one of the members (can't remember who) drove a motor out of this energy and proved to not increase input power.
Nobody can measure the power out of radiant because our meters regard losses in order to interpret them as measurement. And radiant behaves very different. We have no meters for it just now.
Radiant is an effect of switched electrical power. Current science does not regard for it at all except protecting all sorts of electrical equipment from surge and other apparently malicious effects.
The high art is getting this energy interacting with matter in order to use it. You performed UFOs experiment successfully getting HER to interact with matter (neon). This experiment was an introductional tutorial in order make us grasp what stuff his motors make use of.
Thanks for taking the effort in order to read the whole thread! Hat up!
JohnS
Regarding gate voltage:
i.e. IRFP460
Data sheet: 0.27Ohm at VGS 10V and 10A
The FET is rated for 20A permanent or 80A pulsed DC current.
----------------------
The 10V VGS will be suffitient for 60A (0.75Ohm). Above RDSon will increase considerabyl (2.0 Ohm at 80A) up to thermal FET death.
Increasing VGS above 10V will help in the range 60A ..80A to keep the RDSon below 0.75Ohm
-------------------------
Conclusion:
Higher VGS then specified in datasheet:
- will reduce RDSON in highest amp range only and wil not add any contributin in normal 80% load.
- will contribute a small delay at switch off but not reduce speed of switch off
- will reduce switch on a bit IF and only IF the driver can source several amps
- once again keep in mind that ABSOLUTE MAXIMUM RATINGSS do not get rue all at same time. i.e. RDSon is valid for 25°C and will increase with temperature and amps
@ALL: I do not feel comfortable to pollute this thread being dedicated to pulsed coils. I am afrait most of you do not really know on stuff I talk above exactly in this post. We might need to find a solution for this.
@qvision!
Amazing you got this result within short time! These effects are a building stone to be added to UFOs asymmetric motors. In the past one of the members (can't remember who) drove a motor out of this energy and proved to not increase input power.
Nobody can measure the power out of radiant because our meters regard losses in order to interpret them as measurement. And radiant behaves very different. We have no meters for it just now.
Radiant is an effect of switched electrical power. Current science does not regard for it at all except protecting all sorts of electrical equipment from surge and other apparently malicious effects.
The high art is getting this energy interacting with matter in order to use it. You performed UFOs experiment successfully getting HER to interact with matter (neon). This experiment was an introductional tutorial in order make us grasp what stuff his motors make use of.
Thanks for taking the effort in order to read the whole thread! Hat up!
JohnS
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