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Messages - TFZ

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1
Open Discussion / Re: Just Saying -- the soapbox thread
« on: March 04, 2021, 04:06:06 AM »
Might differ from country to country as well. But you're right, pretty much all packages I receive from outside the EU, pcbs and components, are of Asian origin.

2
Open Discussion / Re: Just Saying -- the soapbox thread
« on: March 03, 2021, 02:05:36 PM »
Ordering stuff now from the US and the shipping costs can be jaw dropping.

It used to be that when you ordered a small enough package from the US it would sneak underneath the radar. Anything in a small box used to be safe from customs inspections. Not anymore. Governments are getting greedy and want to squeeze us for EVERY amount that they can.
I have the feeling that more than ever gets through unscrutinized over the last year due to the overwhelming amount of packages they have to handle during the pandemy. I didn't pay import taxes on anything last year, even packages of a couple kilogramms where you would expect they'd take a look.

3
Open Discussion / Re: Anyone hit with the virus out there?
« on: March 02, 2021, 04:02:19 PM »
The mRNA vaccine is the greatest scientific achievement in at least 50 years.

In that case I'm sure you'd like to learn that the vaccine isn't actually a Pfizer invention, it's from the small (compared to Pfizer anyway) company BioNtech in Germany. Its inventor is a son of turkish immigrants named Uğur Şahin, who is also one of the founders. Pfizer simply supplies production capabilites and logistics for distribution. I find it interesting how rarely this gets appreciated, instead it's always "the Pffizer vaccine" when talked about by Americans or the media.

You would think people would have their facts in order before firing off a condescending reply...
Katalin Kariko and Drew Weissman are consensus co-discoverers of mRNA vaccine technology and have been developing the mRNA vaccines for 15+ years- long before Pfizer, BioNTech, or Moderna. Their research was largely performed in the US and funded by US tax payers.

Uğur Şahin is an oncologist that founded BioNTech in 2008 (note the first mRNA paper was published in Science in 1990...by researchers at UW-Madison). BioNTech doesn't have any bigger role in "the discovery" of the mRNA vaccine than Pfizer, and to say "a son of immigrants invented the mRNA vaccine" is a fairy tale. In fact, i'd say the senior vice president of BioNTech had a bigger role in the discovery of mRNA vaccines... that's right, the senior VP of BioNTech is Katalin Kariko.

https://www.nature.com/articles/nrd.2017.243

I was talking about the particular vaccine, I specifically said "the Pfizer vaccine", not the technology per se. Your anger seems to be misplaced, nothing of what I wrote was condescending in any way, I was merely stating a fact that many are overlooking.

https://edition.cnn.com/2020/11/10/europe/biontech-pfizer-vaccine-team-couple-intl/index.html
https://news.sky.com/story/covid-19-biontech-founder-ugur-sahin-says-first-uk-patients-could-be-vaccinated-next-month-12130523
https://www.cnbc.com/2020/11/11/biontech-the-european-company-behind-pfizers-covid-19-vaccine.html
https://www.msn.com/en-ae/news/other/meet-the-couple-who-invented-pfizers-covid-19-vaccine/ar-BB1aUJG7
https://www.thesun.co.uk/news/13153699/pfizer-covid-vaccine-biontech-ugur-sahin-ozlem-tureci/

4
Open Discussion / Re: Anyone hit with the virus out there?
« on: March 02, 2021, 02:13:24 PM »
The mRNA vaccine is the greatest scientific achievement in at least 50 years.

In that case I'm sure you'd like to learn that the vaccine isn't actually a Pfizer invention, it's from the small (compared to Pfizer anyway) company BioNtech in Germany. Its inventor is a son of turkish immigrants named Uğur Şahin, who is also one of the founders. Pfizer simply supplies production capabilites and logistics for distribution. I find it interesting how rarely this gets appreciated, instead it's always "the Pffizer vaccine" when talked about by Americans or the media.

5
Open Discussion / Re: Any Expandoria users here?
« on: February 14, 2021, 07:18:42 PM »
The general concept of "more gain with more attack" would be easy enough to implement, details depend on the circuit you want to apply it to. For example, take a Tubescreamer and any old envelope follower that drives a LDR and an optocoupler. Put the resistive part of the coupler parallel to the 4,7k resistor of the gain stage.
When you hit the strings, the envelope follower will drive the LED of the coupler, the resistance decreases and the gain of that stage increases.

6
Open Discussion / Re: Any Expandoria users here?
« on: February 14, 2021, 11:09:35 AM »
On the Superfuzz the Expander is just a standard volume pot style gain control.

7
Open Discussion / Re: Tayda UV Printing without using Adobe Illustrator?
« on: January 20, 2021, 09:41:16 AM »
Thanks everyone for posting the results. Will try out soon too I guess.

@Willybomb: did you use Inkscape too? If so how did you deal with the three layers? Tayda is asking in their instructions for "RDG_WHITE", but I haven't been able to import their color template file.

8
Open Discussion / Re: Idea for a new phaser design.
« on: January 17, 2021, 02:54:40 PM »
Search for "opto theremin", there is plenty of designs around.

9
Open Discussion / Re: Tayda UV Printing without using Adobe Illustrator?
« on: January 05, 2021, 06:05:02 AM »
I'd say just export a PDF page from Inkscape to the exact dimensions they give in mm with their templates.


> Please create your artwork with CMYK (not RGB)

https://logosbynick.com/export-cmyk-with-inkscape/

11
Open Discussion / Re: Tayda UV Printing without using Adobe Illustrator?
« on: January 04, 2021, 06:36:18 PM »
I only skimmed the Tayda instructions, but I see nothing that you wouldn't be able to with Inkscape.

12
Build Reports / Re: Lovetone Brown Source 1:1 clone
« on: December 02, 2020, 09:23:17 AM »
I wouldnt mind betting that half the trash talked about the Brown Source is by people who never played one, never applied it in the intended fashion, or played a clone with the incorrect parts values.

I doubt this is the case here, the correct values have been known for quite some time, verified by yourself. At the same time, I wouldn't dismiss the possibility of the other values being used in another version of the pedal. Switching those two 22n to 220n will only make a real difference in the particular switch position.  The later 22n in conjunction with the 330k forms highpass of 22Hz, so already two octaves below the guitar. Changing that to 220n for a highpass of 2Hz doesn't do anything to the sound.
The pedal really only works as a booster, playing it into a clean amp is a fizzling annoyance. The fact that it doesn't get much praise among players is no surprise to me, it doesn't do anything special most other overdrives can't do as well, but they also have the possibility to properly distort the signal. It is the very opposite of all the other Lovetone pedals: very limited sound possibilites, very limited scope.

13
Open Discussion / Re: what are you guys listening to at the moment?
« on: November 07, 2020, 11:03:44 AM »

14
Open Discussion / Re: Suitable JFets for phases?
« on: November 01, 2020, 08:42:17 AM »
If you want to match SMD JFETs, consider buying this. The adapter can be bought without pcb too, but then you need to make one yourself, or solder wires to the pins, since they are not in the standard 0.1 format.

15
Bias network can be removed, add filter capacitor for negative rail, use negative supply on opamps, reference JFET input and opamps to ground, connect JFET source to negative supply.

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