Zen Mod Napisano Jun 4, 2022 Share #1 Napisano Jun 4, 2022 Posted na BIg DiyA, kao i obicno mrzi me da kucam opet Finally, Plethora of Pinjatas, origin of P series of amps These (P) being more or less derivatives of my recent M2 derivatives ........and you know them , so no need to go in detail So, active FE instead of buffer+autoformer Fe; biasing mech being more or less same (current sense in rails), only - with help of current mirrors, being sorta flipped upside down, vs. previous optocoupler based one even if optocoupler based biasing is moe than good, believe me, this one is even better ...... in anything you can remember to ask about Iq and Offset stability is bespoke, in any domain I can think of - time, temperature, rails change ( mains fluctuation), no even slightest pops during Power On and Power Off everything to embrace Square Law OS (aha, this one being origin, even if its bigger brother - Babelfish XA252 been made first) OK, straight MOS being real Plethora of Pinjatas ....... (is it Mini Babelfish XA252?) SET P being then same pcb with twist - upper mosfet in Schade arrangement (is it Mini Babelfish XA252 SET ?) pretty close to point where I can't even follow my self, go figure 'nuff babbling, some usual pics schm is cumulative; down will post separate ones shonne, LightMatic and Aleks je reagovao/la na ovo 1 2 Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano Jun 4, 2022 Autor Share #2 Napisano Jun 4, 2022 Now what ...... some pic of Pudding. shonne and LightMatic je reagovao/la na ovo 1 1 Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano Jun 4, 2022 Autor Share #3 Napisano Jun 4, 2022 pics above are Plethora of Pinjatas, basic one for these pcbs: Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano Jun 4, 2022 Autor Share #4 Napisano Jun 4, 2022 Proof of Da Pudding Iq 185mV across 0R11 current sense resistors, so 1A68 Rails +/- 23Vdc Load 8R Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano Jun 4, 2022 Autor Share #5 Napisano Jun 4, 2022 everything same, Load 4R shonne je reagovao/la na ovo 1 Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano Jun 4, 2022 Autor Share #6 Napisano Jun 4, 2022 That done; Spooky sounding ...... but familiar - as I said - Mini Babelfish XA252 now - few more parts added, so sch. is as this and name changed accordingly, to SET P: Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano Jun 4, 2022 Autor Share #7 Napisano Jun 4, 2022 some pics of that in action shonne, Vix and LightMatic je reagovao/la na ovo 2 1 Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano Jun 4, 2022 Autor Share #8 Napisano Jun 4, 2022 This one being Cheapskate SIT ........ or SIT Emulation, whatever Schaded Mosfet - giving not just same wakoo current distribution between output parts as in DEFiSIT, but also having practically same output power as SissySIT - around 18W ..... after that level, everything is going Berserk again, Proof of da Pudding; Iq 195mV across 0R11 current sense resistors, so 1A77 Rails +/- 23Vdc IRFP240 Ug +4V35 IRFP9140 Ug -4V78 DN2540 Ug +4V25 all ref to spk out Load 8R shonne je reagovao/la na ovo 1 Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano Jun 4, 2022 Autor Share #9 Napisano Jun 4, 2022 Same, Load 4R shonne je reagovao/la na ovo 1 Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano Jun 4, 2022 Autor Share #10 Napisano Jun 4, 2022 I like this pic It reminds me of all my amps Set P also sounding Spooky, even with slight addition of Sugar It's boring now, all my amps are sounding similar shonne and LightMatic je reagovao/la na ovo 1 1 Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano Jun 4, 2022 Autor Share #11 Napisano Jun 4, 2022 ha, just for your amusement ....... funny pic as with all pcb construction programs, first and logical step is to draw schm, hopefully imputing exact physical packages ( size, power, voltage) of parts one is going to use when that is done, you have *sch file, with missing counterpart *.brd file getting to that is easy step - File-Switch to pcb then Eagle (old one, I'm working with.... for me as old sock) ask for confirmation "to create from schematic?", you give it and outcome is something reaaaaallly frightening see, what's posted in #1, first was looking as: vinko and shonne je reagovao/la na ovo 2 Link to comment Podeli na ovim sajtovima More sharing options...
shonne Napisano Jun 4, 2022 Share #12 Napisano Jun 4, 2022 Brd je za amatere, pcbdoc je za prof 😁😛🤗 Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano Jun 4, 2022 Autor Share #13 Napisano Jun 4, 2022 ako se naljutim , ce crtam u P-CAD, i ne moz' mi nista LightMatic and shonne je reagovao/la na ovo 1 1 Link to comment Podeli na ovim sajtovima More sharing options...
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