584 reputation
511
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location Oklahoma
age 28
visits member for 4 years, 3 months
seen Nov 5 at 23:00

♦ Community moderator on Electrical Engineering.

I have three years of experience at a small start-up company which I would not suggest to everyone, but for those willing to teach themselves, it is an excellent opportunity.

I currently work in medical proton therapy as a systems engineer. Both the details of a functioning particle accelerator and the beam physics I work with keep me interested in the day to day of my job.

I am also currently pursuing a masters degree in electrical engineering.

I do not speak on behalf of my company, all views I express are my own.


Jun
4
comment Why are some USB chargers slower than others?
@SachinShekhar it is if they use a 1.8A usb spec charger and try to charge an iphone or vice versa.
Jun
3
comment Why are some USB chargers slower than others?
@Compro01 this does not match my knowledge of how it is implemented, but are you possibly talking about the new design cable?
Jun
3
comment Why are some USB chargers slower than others?
In addition to @bigbadonk420, if the device does not have data lines shorted your phone should only draw 100mA.
Jun
3
comment Why are some USB chargers slower than others?
Same as @SergeyVlasov. The USB charging standard has been around for quite a while, every charger you get either follows it, or the standard that iphone uses to ensure you buy their chargers as often as possible. They are different and a charger can not be complaint with both. If the device is "iPhone compatible"(or whatever their term for it is) then it wont be USB compatible and your phone will barely trickle charge from it.
Sep
11
comment Although I was told to charge my Android device before first use, it was already charged. Have I been given a phone rejected by someone else?
Standard for giving the batteries best life is 40% charge during storage, so often a charge of 40% is kept on the batteries until you receive them.
Nov
14
comment How does the GPS work on Android phones?
@Doliveras, I may be mistaken, but you do not need to pay a subscription on the design side either to use the GPS satellites. I have worked with GPS before and even worked on our own receivers and there was not such cost.
Jan
26
comment Blocks all calls not going through Google Voice?
I would be interested in the same thing, but for text messages.
Jan
23
comment Does constant charging harm my Android cellphone?
@JeffAtwood, I have seen battery monitors that need this to stay 100% accurate, but it is a trade-off between battery life and knowing exactly charge left. Most people will chose to know their charge left, I just suggest that you note to people that this does age the battery significantly. You are not wrong, I just think it needs a disclaimer.
Jan
23
comment Does constant charging harm my Android cellphone?
@JeffAtwood, yes I do, my answer about charging cellphones elsewhere on this site discusses it. Also, to link directly to a source, scroll down to the bottom and read the "Simple Guidlines". I have also worked with lithium batteries a lot in a professional capacity at the last start-up I worked at, and these sources are backing for me, not the source of my knowledge.
Jan
23
comment Does constant charging harm my Android cellphone?
@jeff, I have never seen an answer from you off of meta, but I must add a comment, "Although constant charging cannot hurt, it looks like you may want to periodically run the battery all the way down so the digital circuits can correctly calibrate:" is not good advice. This strains the battery, if your charging circuit has a light error on showing how much charge you have left is a minor detail, but stressing your battery can cause problems.
Dec
14
comment Do any phones other than the Samsung S have gyroscope capabilities?
so the iphone4 is 2.3 compliant, awesome.
Dec
14
comment Do any phones other than the Samsung S have gyroscope capabilities?
You actually need a gyroscope and an accellerometer to fully sense motion.
Nov
28
comment What's the differences between the different processors available in the current lineup of devices?
You cannot assume they are all 1GHz. Some processors run at 1GHz and have a 5 stage pipeline with wait states. Another might run at 800MHz and have a 5 stage pipeline with operand forwarding, removing wait states, giving it an advantage in certain cases, not in others. If they both had 1GHz then the comparison would be that the one without wait states is always better.
Nov
22
comment Do I have to charge my phone before I use it the first time?
@Edelcom, It probably only makes a minor difference to you. Yes, it is better to charge the phone in small increments. If your phone is well engineered then when you power connected and the battery charged it will not pull power from the battery. This is a feature a user cannot recognize, so they normally do not do it. The rule here is to charge your phone often and avoid deep discharge. If you are never letting it power off from lack of power you are not at risk of causing battery failure, which is the major thing people cause when they think they need to full discharge.
Nov
21
comment Do I have to charge my phone before I use it the first time?
@faken, I think Arda Xi mixxed up battery technologies, nothing major, I kind of expected it.
Nov
21
comment Do I have to charge my phone before I use it the first time?
This question is about an HTC Desire HD. This uses a lithium battery htc.com/www/product/desirehd/specification.html The original phone he mentions also uses a lithium battery, that took some looking. It is speced here: mobiletechreview.com/phones/Sony-Ericsson-K850i.htm
Nov
21
comment Do I have to charge my phone before I use it the first time?
@Arda Xi, You are also incorrect, this does not happen with Lithium batteries. I will add links to answer. I work at a job where I use lithium batteries in the thousands every day.
Nov
21
comment Do I have to charge my phone before I use it the first time?
@Arda Xi, you can discharge it until it says it is dead, but if you give it any time to continue that way you will have the self discharge take it below the safe charge.
Nov
20
comment Do I have to charge my phone before I use it the first time?
Lithium batteries are never shipped full charge, and you should never take the battery through a full charge discharge cycle for "lifetime". This is quite bad for a lithium if you take your discharge to too low a charge.
Nov
5
comment Connect Android phone to wifly board
On that note, android serial connection would make my life very very easy, so if you find an existing method I will look forward to your information!