sorry CtC , I was distracted with zillion things ( not mentioning flu with border temp , I got from my Petri Dish)
will post edited schm tonight with all necessary comments
have some serious amp cooking to do today
do not worry - nothing is very critical here ..........and , one jovial thing - cascode elements really don't need to be matched
they can be , if you wish ...... but really not necessary
will post edited schm tonight with all necessary comments
have some serious amp cooking to do today
do not worry - nothing is very critical here ..........and , one jovial thing - cascode elements really don't need to be matched
they can be , if you wish ...... but really not necessary
No worries. Everyone has a real life! Hope your better now. Almost everyone I work with had the funk for a week of so. And it’s warm here.
Looking forward to the edited schm, thanks.
Amp cooking? New design? Secret?
I’m in construction management in my professional life. It’s my responsibility to make sure that the client gets what designers, engineers, and consultants organized for them. I learned a long time ago to follow the lead of the professional.
Doing same here, you sent me matched BC556B’s for Q2 and Q6, so I ordered matched BD140’s to replace them. Who am I to question? 😉
Excuse me for my wrong question 🙂 I wanted to know if the needle of the indicator indicates a bias or something else.
Tnank you.
Tnank you.
considering that amp in question is Babelfish X , iteration of Aleph X well known around with few twists here and there , it couldn't be used regular PL needle meter arrangement - measuring voltage sag across rail conductor - from cap bank to power pcb ;
connected that way , needle stay put as long amp is in class A , so no pumping through rail
so , when Aleph X is in question - beast simply not capable to go out from A class , I simply connected needle meter across one source resistor ; of course there is series connected trimpot and nice elco across meter , to suppress zingylingy
connected that way , needle stay put as long amp is in class A , so no pumping through rail
so , when Aleph X is in question - beast simply not capable to go out from A class , I simply connected needle meter across one source resistor ; of course there is series connected trimpot and nice elco across meter , to suppress zingylingy
I understand, thank you very much. Can you please tell me, what value is trimpot and elco? I like the idea and I would like to use it for the resistor source of 0R47. Thanks 🙂
I can't tell now which value of trimpot ...... I knew that when I was measuring/calculating/soldering ... and now is irrelevant to me
same as is for you , simply because your meter is certainly not same as this one
tell me current for full scale , Rdc of coil , and then I'll calc . series resistance for you
cap is approx. 220uF , absolutely not critical value
same as is for you , simply because your meter is certainly not same as this one
tell me current for full scale , Rdc of coil , and then I'll calc . series resistance for you
cap is approx. 220uF , absolutely not critical value
Thanks a lot Zen Mod, I have the same indicator and the same case ,and bias on the source resistor 0R47will be 220mA.
in which case you must know that meters are having some electronic inside , needing removal
see pics
trimpot is in my case 1K , but I believe you're good with 500R
Attachments
two attachments for vitalica , one attachment for coasttocoast
hope I didn't made a mess (again)
I actually like the look of that more than the clone case.
Is it ok to purchase if left looking like that?
The last thing I would want to do is upset papa.
it is a clone case , all the wings and whistles and what not
however , entire project is primary Kudos , nothing exactly cloned
more details (how , when , what ) will be posted soon , including my (always modest and humble) contributions to Aleph X Jazz standard
oh Boy ....... what a damn satisfaction , taking Papapuzzles all to the extreme 🙂
however , entire project is primary Kudos , nothing exactly cloned
more details (how , when , what ) will be posted soon , including my (always modest and humble) contributions to Aleph X Jazz standard
oh Boy ....... what a damn satisfaction , taking Papapuzzles all to the extreme 🙂
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It looks like the XA.5 front plate without the big hunks of aluminium bolted to it, combined with XA.8 heatsinks.
In it's present configuration it certainly isn't a clone of any of the Pass Labs cases.
I just want to be sure for future reference that this doesn't irritate pass labs or papa.
In it's present configuration it certainly isn't a clone of any of the Pass Labs cases.
I just want to be sure for future reference that this doesn't irritate pass labs or papa.