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#1641 |
diyAudio Member
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You can split the rails with an active ground and get the firstwatt standard 23v rails.
Ground is just a state of mind. ![]() |
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#1642 |
diyAudio Member
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The pucks have lower capacities with higher voltage.
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and the First W ![]() ![]() |
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#1643 |
diyAudio Member
Join Date: Jan 2010
Location: PA
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#1644 | |
diyAudio Member
Join Date: Jan 2010
Location: PA
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Quote:
The strategy for deciding upon a pair is to optimize "perfect “square law” cancellation of distortion?" |
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#1645 |
diyAudio Member
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I was told that with source followers the Crss is the more important value to look at.
And this one declines with certain types at 25V considerably. Look at Pa´s Burning Amp speech 2016 and there was besides other this interesting picture.... So you must look for Ixys that go down in this way for Crss. It is a pleasure to hear his explanations.
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#1646 |
diyAudio Member
Join Date: Jan 2010
Location: PA
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Wow! What a great resource. Thank you so much. I almost missed that your screenshot was at 13 min. I thought the discussion about capacitance was over at 4m into part two. This talk answers a bunch of questions for me. I usually do not study videos. I don't have the patience. I must rethink. Thank you for alerting me to this talk. I imagine that if I was going to play with "pucks" using a typical FW PS; this P channel having asymptotic capacitance changes at a low voltage would be a candidate if I could match it up with an N channel.
http://ixapps.ixys.com/DataSheet/93001.pdf Last edited by lae2; 10th February 2019 at 11:33 PM. |
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#1647 |
diyAudio Member
Join Date: Jan 2010
Location: PA
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A candidate if I could match it with a P channel.
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#1648 |
Official Court Jester
diyAudio Member
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I have great difficulties watching Papavideos ........ I'm laughing at least half of time , so must watch it several times to get everything
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my Papa is smarter than your Nelson ! clean ![]() ![]() ![]() |
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#1649 |
Official Court Jester
diyAudio Member
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I believe answers are already there .......
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#1650 |
diyAudio Member
Join Date: Jan 2010
Location: PA
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I got itchy and ordered a few pairs of IXTH20P50P and IXTH30N60P. The capacitance and transconductance appear comparable relative to other documented push/pull pairs.
Last edited by lae2; 11th February 2019 at 04:14 AM. |
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