@Aleph(0) --- Please see your PM and (home) EM ASAP!

HP like I said on private thread I'll do what I can so plz just finish intro and I'll tell my impressions but I can't stand behind anything cuz I'm not the humanities prof!

 

As a dedicated reader of this thread, and a hopefully internet "friend" to both of you, you won't take this in the wrong way. But the two of you having private conversations about other things not related to the topic at hand, in public, makes it sort of embarrassing for me and I'm assuming others. Not trying to condemn but to explain how it seems( at least to me).

Though honesty compels my confession that both Aleph and I got out of line)

HP Is being too gracious I am totally to blame cuz I started it Shortbus and others I really am sorry for that! HP I'm also sorry for rationalizing my juvenile conduct by saying you're easier to approach in public cuz that's not point! You're working hard on this and interested visitors shouldn't have to tolerate our family squabbles

 

Hey @Aleph(0) --- Just so's ya know I'm not a total slacker please note that I'm working on it (i.e. please 'keep tabs' on Post #208)

I am totally to blame cuz I started it

You may have started it but I 'fueled the fire' as it were -- Hey Aleph - Here's an idea- instead of 'fighting over the blame' we'll just move on...K?

All The Best
HP

 

HP tnx cuz very happy to move on!

HP I having problem maybe can help? I run fb with royer driver for 25kv and use circuit like you post for one single doubler and fb. Thing is that I can load to 4 ma with hardly noticable drop from 50kv which I say is good for just nr royer driver. But if any tiny corona from near doubler I can't get any more than peak doubler input voltage with even just meter load? So I am asking can corona current be that strong cuz to load it that much means at least 6ma so 150w if loading to 25kv but corona not hot enough for that?

 

I run fb with royer driver for 25kv and use circuit like you post for one single doubler and fb. Thing is that I can load to 4 ma with hardly noticable drop from 50kv which I say is good for just nr royer driver.

Indeed it is!

But if any tiny corona from near doubler I can't get any more than peak doubler input voltage with even just meter load?

I shall assume your meaning is that, under the stated condition, you are unable to attain a doubler output greater than its peak input?

So I am asking can corona current be that strong cuz to load it that much means at least 6ma so 150w if loading to 25kv but corona not hot enough for that?

While corona losses can be significantly greater than one would anticipate AND we would not expect all of the power to be dissipated via the arc/corona itself -- I do not believe your problem owes to corona overloading the PSU per se

Having witnessed and investigated the precise phenomena you describe - I am able to state with confidence that the rectifiers are breaking down as a result of electrical field gradients attendant to the corona (to understand this you need only consider the fact that the rectifier 'sticks' are comprised of many 'diode wafers' stacked in series) --- hence, under said conditions, the doubler is functioning merely as a rectifier...

Although unsolicited, my advice is that you test the rectifiers to their absolute maximum reverse EMF specification (i.e. 45kV) then 'pot' the assembly in Shell Diala -- Note: "1-K Kerosene" and USP mineral oil will work temporarily - be advised, however, that their (scant) sulfur content will degrade the components over time... --- another permanent solution is so called "paraffin wax"...

All the best
HP

 

--Place holder--

 

LOPT optimization tutorial status report:

As of Dec/2/2015
Further (minor) work on introduction
Created and uploaded images
Moved tutorial and status report post down thread (for convenience)

As of Nov/28/2015
Introduction in progress...


As of Nov/11/2015
Tutorial 'moved down' thread --- Done
Complete Step 16 --- Done
Comprehensive edit/proofread (First pass) --- Done


As of Oct/23/2015
Tutorial 'moved down' thread --- Done

---General objectives:---
Completion of tutorial
Addition of Prerequisite material
General proofing by author ('HP')
General proofing by coauthor ('Aleph')
Request for membership input
Transition to 'Projects' forum

Begin EHT PSU tutorial (on this thread)
--------------------------------------------------------


As of Sep/20/10 pm CDT
Minor editing
Begin Step 16
Moved tutorial to end of thread for convenience


////////////////
Previous work:

As of Sep/20/2015 12:37 am CDT
Steps 12 -14 entered (unedited)
Step 15 begun


Sep-17-2015 3:14 pm CDT
-Temporarily disable automatic image display (to expedite working with post)
-Composition of Step #12 (Rough)

As of 9/16/2015 --- 11:30pm CDT
-Consolidation of exsisting posts complete
-Linking of relevant 'Re-ups' Complete

Best regards
HP

 

Hey @Aleph(0) --- Inasmuch as you will not be doing formal proofreading please 'blank' post #212 -- lest our effort garners a reputation as a 'resource hog' --- Further to that - sanity forbids multiple 'revisions' floating about...

IMPORTANT: Maintenance of valid reference requires that you please do not delete the post - Just clear it with a brief message acknowledging same...

All the best
HP

 

please 'blank' post #212

Is done! HP Thanks cuz I see you working on intro!
Bwhaaa! HP you look POed to be wearing Santa Claus hat! Like biding time with patient indignation until chance to settle score!

HP I doing how you say for building my single channel CT scanner. So far I have coded visual C++ algorithm and assembly mods to process data acquired from from linear and angular encoders and ADC output from xray detector for lucency signal. Now I am saying it would be cool to take advantage of phosphor's broad PE response by encoding swept kvp? So then imaging sftwe could use color to show subject's lucency profile across roentgen spectrum? Could be intuitive by using long wavelength colors for low PE xrays and vice versa?

HP you were right about C++ better than C# which sucks! But I wish there was nice Algol available cuz SPL is da bomb!

HP Plz post pic of BLF244 and say how supplied cuz not understand how you say sos when is not silicon on saphire? Plz be patient I tried looking on internet but too many incongruous results

 

Thanks cuz I see you working on intro!

Apologies for the snail 'tectonic plate' pace

Bwhaaa! HP you look POed to be wearing Santa Claus hat!

I take it you are aware of the distinction between myself and the subject of my avatar?

Like biding time with patient indignation until chance to settle score!

I see that too! -- I suspect Vulnavia would be an appalling adversary -- fictitious character notwithstanding!!! -- and it was at my request the cap was drawn there!!!

HP I doing how you say for building my single channel CT scanner. So far I have coded visual C++ algorithm and assembly mods to process data acquired from from linear and angular encoders and ADC output from xray detector for lucency signal. Now I am saying it would be cool to take advantage of phosphor's broad PE response by encoding swept kvp? So then imaging sftwe could use color to show subject's lucency profile across roentgen spectrum? Could be intuitive by using long wavelength colors for low PE xrays and vice versa?

First off I wish to express my pleasure at your active pursuit of the subject! -- Call it what you will - but I'm one of those folks requisite of frequent reassurance that I'm not wasting my time!

But to continue:

So far I have coded visual C++ algorithm and assembly mods to process data acquired from from linear and angular encoders and ADC output from xray detector for lucency signal.

Very good! - Most people find development of the image processing software to be the most challenging aspect of such projects...

Now I am saying it would be cool to take advantage of phosphor's broad PE response by encoding swept kvp? So then imaging sftwe could use color to show subject's lucency profile across roentgen spectrum? Could be intuitive by using long wavelength colors for low PE xrays and vice versa?

Absolutely! - Note that, as a practical matter, the 'λ to lucency' characteristic of atomic matter is rather linear for PEs much above 30KeV --- hence the principal utility of such systems is mapping of density profiles -- Inasmuch as a sweepable 'generator' is the only (and, thanks to our 'ultra low' ripple design, readily achieved) hardware requirement - it's all good! -- FWIW I like your idea of depicting Roentgen wavelength via a quasi-parallel relationship to optical wavelength

HP Plz post pic of BLF244 and say how supplied cuz not understand how you say sos when is not silicon on saphire? Plz be patient I tried looking on internet but too many incongruous results

No problem! -- I'll post some images early Sunday AM --- Meanwhile by 'SOS' I was referring to the Stripline Opposed Source package (Specifically: SOT-123A)...

Indeed! -- It most definitely is not fashioned of silicon-on-sapphire technology --- more's the pity!

All the best
HP

 

ATTN: @Aleph(0)

In case you've looked in here during the past ~90 Min please rest assured I have not confused power MOSFETS with disassembled D'arsonval movements! --- Said images were intended for another thread but initially and inadvertently posted here (Seems I had two active ACC windows and mistakenly maximized this one for the upload)

All of which is to say: You may expect the images of the BLF244s in a few hours (circa 2:00 AM CST)

Best regards
HP

 

@Aleph(0)

Here are the images of the VHF power MOSFETs (BLF244) and their packaging --- FWIW you should be able to purchase a pack (QTY 20) for ≤ $1,000 --- If you don't want to bother with ordering -and- it can wait a couple weeks you may have a pack with my complements when you come out at the end of the month Please note: Should you choose to order - be very, very wary of 'knock offs'! Accept only Phillips (NXP) and be careful in regards to the distributor! --- I can vouch for RF Parts - their price is unbeatable at $959.00 for a pack of 20! --- Again, I can give you an even better 'price' (To wit: $0.00) if it can wait until the 23'rd

So with no further ado:




All the best
HP

 

IMPORTANT EDIT:
My assumptions that aac security was breached were unfounded! I made too many assumptions and they were just WRONG!

HP sry I'm too pissed off with internet BS for like you say sunny disposition today I tell them about email on bug forum but if can't or won't do anything about it, ISP says they'll file report with authorities (whoever TF they are) I know it will just end up in drawer somewhere cause emails are only salacious and stupid but not threatening! PLZ don't tell me to just block the IP range or sender or whatever! The fact is someone got my info from my registration and anyway I can't alter my life just to sidestep jerks! Also if emailing pukes think they'll chase me off forum they can think again! Someone must have done good job raising me, HP!

HP thanks so much for offer of transistors! I like too cuz date codes on yours means not ROHS! I read military and NASA won't use ROHS parts so is another example of good enough for the governed! HP I accept offer only if it not leave you with short supply? HP I very happy you like my ideas for scanner we talk about it more when in better mood

 

HP sry I'm too pissed off with internet BS for like you say sunny disposition today

Please don't let hecklers control your mood! They have no power over you that you don't grant them! - Yes! I know! That's very easy to say -- but the fact remains...

PLZ don't tell me to just block the IP range or sender or whatever!

Aleph! I should think you would know that I'm the last person who'd advise ignoring a situation! -- I'm proactive to a 'fault' and admire said trait in others!

ISP says they'll file report with authorities (whoever TF they are)

Seems to me it's at least a Google problem -- Perhaps you should review their protocol for reporting abuse? --- I guarantee those messages are yet sat on their servers!

I can't alter my life just to sidestep jerks!

if emailing pukes think they'll chase me off forum they can think again!

Agreed! -- You make me very proud!

HP thanks so much for offer of transistors! I like too cuz date codes on yours means not ROHS!

You're very welcome! -- However I'm by no manner of being certain they're non-RoHS I interpret the date-code as July (Spec week 28) of 2000 --- I'm uncertain as to when RoHS compliance became 'standard' for components manufactured under contract to US corporations (Note that, as per markings, the actual nation of origin is RP/PH) --- FWIW while I have experienced considerable difficulty with RoHS PCBs, etc --- I have never encountered difficulty with RoHS components themselves... That said yes! Non RoHS beats RoHS all the time, every time!!!

...is another example of good enough for the governed

And that, my friend, is upshot of the myopic selfishness of 'single issue voters'

HP I accept offer only if it not leave you with short supply?

No problem! I must have 15 cartons 'buried' in West Storage...

HP I very happy you like my ideas for scanner we talk about it more when in better mood

As I said - Please try not to let others dictate your state of mind! -- They don't deserve that kind of power! --- Hope to hear from you soon!!!

Best regards
HP

 

I can vouch for RF Parts - their price is unbeatable at $959.00 for a pack of 20!


No problem! I must have 15 cartons 'buried' in West Storage...



HP

Cartons of mosfets? 15 cartons stored away at $1000 a carton? You have a lot of money to throw around HP.

 

Cartons of mosfets? 15 cartons stored away at $1000 a carton? You have a lot of money to throw around HP.

That's being nice -- most folk call it OCD!

Best regards
HP

 

@Aleph(0)

On this thread you mentioned seeing my post on ETO -- Is it possible you registered there with your gmail address and forgot? -- BTW why did you delete your thread in Feedback? - I saw that one of the ETO mods -- @DerStrom8 -- posted there offering assistance...

Please see your PM...

Best regards
HP

 

@Aleph(0)

On this thread you mentioned seeing my post on ETO -- Is it possible you registered there with your gmail address and forgot? -- BTW why did you delete your thread in Feedback? - I saw that one of the ETO mods -- @DerStrom8 -- posted there offering assistance...

Please see your PM...

Best regards
HP

It is possible Aleph(0) did not delete the thread, perhaps the moderators here felt it was not a good idea to have it public, as it could lead to further harassment, so they deleted it.

I am still at your service if you require further help.

Regards,
Matt

 

On this thread you mentioned seeing my post on ETO -- Is it possible you registered there with your gmail address and forgot?

HP I not sure I singed up to eto or not but that thread is earlier than I had gm account. I should touch base with derstrom just in case I had blond moment and updated email addy and to find out if I have eto membership.

BTW why did you delete your thread in Feedback?

I explain absence of that thread when I answered your pm

HP Tnx! I'll try get back on later on cuz now is hectic!

 

It is possible Aleph(0) did not delete the thread, perhaps the moderators here felt it was not a good idea to have it public, as it could lead to further harassment, so they deleted it.

I am still at your service if you require further help.

Regards,
Matt

Derstrom Thanks! I will try to send you pm about eto membership if I can get to it later on when I get back
Also thread's absence is all legit so HP won't have to see hackers in her sleep!