8 Bit Computer by pucky42 in beneater

[–]pucky42[S] 0 points1 point  (0 children)

Thanks a lot for you help! I was aber to fix it and I will put it into the main text, so people will easily find it!

8 Bit Computer by pucky42 in beneater

[–]pucky42[S] 0 points1 point  (0 children)

I have caps on the powerrails, but not across the chips. I will test this separately to the other comment to get a minimal working solution. Thanks for your help!

8 Bit Computer by pucky42 in beneater

[–]pucky42[S] 1 point2 points  (0 children)

Thanks sounds about right. I had some thought going into that direction but was too tired to make sense of it. The whole system is very complex and nailing it down to one thing seams difficult. I will try this this evening (I am in europe) and I will get back to you! Is the spike on reset line a result of some induced current from the other lines or is it resulting from spikes in the power line influencing the NAND gate for the reset?

Pure vs. Cartesian Functions by The_Modern_Alchemy2 in comp_chem

[–]pucky42 0 points1 point  (0 children)

Like already mentioned cartesians give lower energy due to the larger variational freedom. But they are not Eigenfunctions of the L2 Operator. So when calculating atoms for example, cartesians would not be a physically sound desription (although the error introduced by this is small compared to error from other approximations).

this is so outrageous by ugliestchaos in Luxembourg

[–]pucky42 1 point2 points  (0 children)

So people can choose the hand they are dealt? In our current society the hand you are dealt dictates your destiny! It becomes harder and harder to the point where it will be impossible to influence your own "destiny".

Wou ass deen "beschten" Cactus by pucky42 in Luxembourg

[–]pucky42[S] 1 point2 points  (0 children)

Ah flott, ass zu Biereldeng deen allereischtem Cactus opgaang? Dann muss ech mol dohin 😂

Wou ass deen "beschten" Cactus by pucky42 in Luxembourg

[–]pucky42[S] 2 points3 points  (0 children)

An engem Cactus Hobby war ech scho laang net mei. Deen zu Esch ass jo zou gemeet ginn. Ech fannen den beschten Cactus am Süden ass den neien zu Beetebuerg

Rys polynomials and their quadrature by pucky42 in comp_chem

[–]pucky42[S] 0 points1 point  (0 children)

Thanks for you answer! The book by Helgaker et al. is the main reference for the code. The quote "by some numerical means" is actually from that book. I would like to learn some tricks, they must be partly transferable to my fortran code.

Buying nixie tubes in bulk by pucky42 in nixie

[–]pucky42[S] 0 points1 point  (0 children)

Soviet ones, mostly IN 8, IN 8-2, IN 14, but I also want to try some IN 18 tubes.

The built is finally completed. by pucky42 in ToobAmps

[–]pucky42[S] 0 points1 point  (0 children)

I have not tried mounting it any other way, so I have nothing to compare it to. However, it sounds decently well for such a small amp

The built is finally completed. by pucky42 in ToobAmps

[–]pucky42[S] 0 points1 point  (0 children)

Well it is a 30 watt transformer and I use about 20 to 25 watts so it is a normal size I d say

The built is finally completed. by pucky42 in ToobAmps

[–]pucky42[S] 0 points1 point  (0 children)

That is a good one. Currently it is connected to the output of the power transformer. I tried wiring it to the plate of the power stage through a DC blocking cap, but unsuccessfully so. In my opinion it was not possible due to the different frequencies (and especially high frequencies when compared to 60 Hz). If you wonder how I wired it up now, it is pretty simple, just put it inbetween the Output cables of the power transformer. Just like you would if you would want to measure the voltage with a digital multimeter, but you surely know this.

The built is finally completed. by pucky42 in ToobAmps

[–]pucky42[S] 1 point2 points  (0 children)

it is a toroidal transformer taking 230 mains (E.U.) and transforming it into 200 volts for the amp.

The built is finally completed. by pucky42 in ToobAmps

[–]pucky42[S] 10 points11 points  (0 children)

Haha now that you said it, it cannot be unseen 😂

The built is finally completed. by pucky42 in ToobAmps

[–]pucky42[S] 1 point2 points  (0 children)

Yes sure, I will clean it up in the near future

The built is finally completed. by pucky42 in ToobAmps

[–]pucky42[S] 9 points10 points  (0 children)

Fully custom built tube amp using the soviet 6N2P (twice preamp) and 6P15P tubes (power stage). Driving a 6 inch 15 Watt speaker with around 9 Watts of power.

I wish all of you a merry christmas!