network profile
| bio | website | |
|---|---|---|
| location | Manchester, United Kingdom | |
| age | 31 | |
| visits | member for | 11 months |
| seen | Apr 26 at 17:45 | |
| stats | profile views | 0 |
I am a LaTeX user for several years now but I never took it much further than user level. Sometimes I wish I'd be a better coder but I am able to solve most of my problems with existing packages.
Currently I am in the last year of my PhD in Chemical Engineering in Manchester, England which means that I won't be able to dedicate much time to tex.stackexchange in the next couple of month. However, I am going through phases of substantial procrastination and if I see a question I can answer, I'll try to give a good answer.
Once finished with my PhD, I'd like to return to my home sweet home in Germany.
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Apr 25 |
awarded | Teacher |
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Apr 25 |
revised |
Arduino motor shield running 2 12V 60 RPM DC motor added 48 characters in body |
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Apr 25 |
comment |
Solar power wattage requirement Got the same number, simple multiplication :) Which charger uses 4.7Amps? Serious current. My oldschool Nokia takes a max of 890mA, but I guess with modern power hungry devices this is a reasonable value |
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Apr 25 |
answered | Arduino motor shield running 2 12V 60 RPM DC motor |
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Apr 25 |
awarded | Popular Question |
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Apr 19 |
comment |
Capacitive Touchscreen for DIY usage? Those are resistive 4-wire touch screens. Now, early 2013, you can get them for about 3€/2.50GBP on ebay |
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Apr 5 |
revised |
Constant current circuit with transistors/MOSFETs design comparison added 1263 characters in body |
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Mar 1 |
accepted | Constant current circuit with transistors/MOSFETs design comparison |
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Mar 1 |
accepted | Measure current in high voltage (10kV) |
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Feb 22 |
comment |
Measure current in high voltage (10kV) @Jason from 10,000-20,000 Hz according to my Plasma guy |
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Feb 22 |
comment |
Measure current in high voltage (10kV) Ah ok, so this is basically reversing the ring that I am using now. Currently it is just like in the picture where the red cable is going through the ring and the winding gives me 0.1V per Amp. |
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Feb 22 |
comment |
Measure current in high voltage (10kV) sorry forgot to mention it. It is AC, I've edited it. We expect something in the ~10mA range peak to peak |
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Feb 22 |
revised |
Measure current in high voltage (10kV) added 3 characters in body |
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Feb 22 |
awarded | Commentator |
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Feb 22 |
comment |
Measure current in high voltage (10kV) A good idea but sadly this ring thing is only big enough for the cable to go through once (approx 1.5cm diameter). It is an super old device I have to add (people hwo read PhD comics will know: doing cutting edge research with equipment from the mid 80s rocks). |
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Feb 22 |
asked | Measure current in high voltage (10kV) |
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Feb 9 |
awarded | Scholar |
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Feb 9 |
accepted | Powering a 12V and a 9V device from single power supply with LM7809 voltage regulator |
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Jan 21 |
comment |
Constant current circuit with transistors/MOSFETs design comparison I have taken the 100K resistor value from the first link that I posted. The Arduino pin is 5V and 20mA max., I think. The TIP110 NPN Darlington used in the second circuit has a current gain of 2500. Does this mean my supplied current needs to be 350mA/2500=0.14mA? This would give me a resistor value of (5-0.7)V/0.14mA~ 30k Ohm. Does this sound more reasonable? |
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Jan 21 |
comment |
Constant current circuit with transistors/MOSFETs design comparison You are right about the resistor values. I wasn't paying attention. I am aware of the resistor power calculations |
