picoDodo
shutup. you live in a gorgeous place...managed to fool papa...just shut up.......
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That's better, but you forgot to call him a bastard.
I'll do it for you.
ZenMod you bastard.
Hahaha
It's just an amplifier. 😀
Tokin and 193V in SE sound like a great place to have fun with organic SIT experience.
it's possible to to catch that wabbit in more than one way
one way is , as shown by Papa with that pcb screenshot (Soundwakoo posted) , implementing depletion one and enhancement one in M2 like circuit
just pulled out old M2 sim , slammed Pass-SIT-1 in it , changed few things and values and got workable solution ; which means that there is proper leeway to have it functional in vivo , with Tokin or similar , instead of PapaSit
price , besides loosing obvious visual elegance of schematic itself (which is only important as visual presentation of inner elegance and beauty of mental construct) is - introducing source resistors , thus loosing/changing pure transfer characteristic of parts used ......... which is , if we don't know better , important even just because Pa found it interesting to include in newest PL amp - XA25
other part of price is introduction of several parts for biasing mechanismus , introducing rail(s) in game and complication of offset behavior during startup
(not a problem if deciding to use one-sided PSU and capacitor on out)
second way - resorting to XA25 biasing approach , to avoid source resistors at all costs
more I think of all that ....... I'm more appreciating beauty of this simple DEFiSIT ........ and last but not least - Papa's work involved in .........
one way is , as shown by Papa with that pcb screenshot (Soundwakoo posted) , implementing depletion one and enhancement one in M2 like circuit
just pulled out old M2 sim , slammed Pass-SIT-1 in it , changed few things and values and got workable solution ; which means that there is proper leeway to have it functional in vivo , with Tokin or similar , instead of PapaSit
price , besides loosing obvious visual elegance of schematic itself (which is only important as visual presentation of inner elegance and beauty of mental construct) is - introducing source resistors , thus loosing/changing pure transfer characteristic of parts used ......... which is , if we don't know better , important even just because Pa found it interesting to include in newest PL amp - XA25
other part of price is introduction of several parts for biasing mechanismus , introducing rail(s) in game and complication of offset behavior during startup
(not a problem if deciding to use one-sided PSU and capacitor on out)
second way - resorting to XA25 biasing approach , to avoid source resistors at all costs
more I think of all that ....... I'm more appreciating beauty of this simple DEFiSIT ........ and last but not least - Papa's work involved in .........
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Also.. 2sk180's in C or D grade appear to get closer to lower -Vgs of P channel mosfets. Stretching my paygrade, but seems more possible with time/expense.
Yes this was my secret brilliant idea in f4 beast builders thread to combine ixth40P50P with an appropriate depletion mode mosfet, or combine depletion mode device with stack of P channel lateral fets.
I'm a sucker for simplicity wherever possible.
if Vgs is in range of 3-4V , while conducting 1,5 to 2A at 20-sh Vds , it's usable part
I haven't used/tested mine yet.. slow diy'er
SK180 THD spectra (Mr. R) is much better at higher Vds.. 610/9610 buffer stage? Big Boy DefiSit.
SK180 THD spectra (Mr. R) is much better at higher Vds.. 610/9610 buffer stage? Big Boy DefiSit.
Mr. Nice Guy 🙂
have you LTSpice model handy ? ........ when no one want to send a pair to OPLDF (it's easier to hate and call ZM names)
have you LTSpice model handy ? ........ when no one want to send a pair to OPLDF (it's easier to hate and call ZM names)
Mr. Nice Guy 🙂
have you LTSpice model handy ? ........ when no one want to send a pair to OPLDF (it's easier to hate and call ZM names)
Certainly. 🙂
http://blog.audiomaker.tech/spice/2sk180.txt
tnx
this is proof of a pudding ....... not exactly proof in a pudding 🙂
si , it is doable , Iq around 1A6 as predicted per spice
it'll need sort of speaker delay , just because there is nasty voltage peak in startup sim
this is far from optimised** , THD is 0.1% at 1W , though THD spectra is schweeeeeeeeeet
**demanding both more time with LTSpice and then real deal - playing with it in vivo
this is proof of a pudding ....... not exactly proof in a pudding 🙂
si , it is doable , Iq around 1A6 as predicted per spice
it'll need sort of speaker delay , just because there is nasty voltage peak in startup sim
this is far from optimised** , THD is 0.1% at 1W , though THD spectra is schweeeeeeeeeet
**demanding both more time with LTSpice and then real deal - playing with it in vivo
