Search found 5644 matches

by Kurt_
Fri Jan 17, 2014 6:17 pm
Forum: Technical Questions and Answers
Topic: Shunt-Regulated Op Amp question
Replies: 0
Views: 19967

Shunt-Regulated Op Amp question

Hey all, I'm hoping someone can help. I'm trying to make a voltage doubler out of an op amp with a reference. The LM10 http://www.ti.com/lit/ds/symlink/lm10.pdf http://i.imgur.com/Y4fmKHI.png When I make this circuit, it just bypasses the op amp and outputs V+, since the circuit attaches V+ to Vout ...
by Kurt_
Wed Aug 31, 2011 11:18 pm
Forum: Forum 42
Topic: Best battery for high capacity / high discharge.
Replies: 13
Views: 4017

Re: Best battery for high capacity / high discharge.

I figure if I limit it to ~5 amps of current draw from the battery then I can use an 18650 Lithium Ion battery. So yeah, that.
by Kurt_
Sat Aug 27, 2011 12:31 pm
Forum: Forum 42
Topic: Best battery for high capacity / high discharge.
Replies: 13
Views: 4017

Re: Best battery for high capacity / high discharge.

~30 seconds at a time.
by Kurt_
Fri Aug 26, 2011 3:28 pm
Forum: Forum 42
Topic: Best battery for high capacity / high discharge.
Replies: 13
Views: 4017

Re: Best battery for high capacity / high discharge.

I can't get in to specifics. But it is basically a small battery powered resistance heater. It heats a 1"x1" area to 200 C via conduction. The battery is connected through a power transistor to the heating element, so the flow isn't entirely unregulated, but it is still essentially a shorted battery.
by Kurt_
Thu Aug 25, 2011 12:16 am
Forum: Forum 42
Topic: Best battery for high capacity / high discharge.
Replies: 13
Views: 4017

Re: Best battery for high capacity / high discharge.

I'm talking about handheld-type devices with high discharge currents. That's where things get tricky: the smaller cell sizes can output less current.
by Kurt_
Wed Aug 24, 2011 11:20 am
Forum: Forum 42
Topic: Best battery for high capacity / high discharge.
Replies: 13
Views: 4017

Best battery for high capacity / high discharge.

Hi! I'm looking for a battery that will drain safely at approximately 2.4V 8A or 3.7V 4A... without exploding. The high-current part of the circuit is regulated by a transistor, but can be adjusted anywhere from full power to no power, so the battery will essentially be a short circuit. Size is a la...
by Kurt_
Sat Jul 30, 2011 5:36 pm
Forum: Forum 42
Topic: Motorized vehicle projects mopeds/bikes/gokarts etc!~
Replies: 18
Views: 6306

Re: Motorized vehicle projects mopeds/bikes/gokarts etc!~

Hi! I was thinking of buying a magic flight launch box and rigging it up to a 13" or so capacitor in my backpack. It made me think of you guys. I wasn't expecting to find any old members, to be honest. I don't know why I haven't stuck motors on to things before. You've inspired me. So, like, I'm tot...
by Kurt_
Mon Apr 25, 2011 11:08 am
Forum: Forum 42
Topic: Games that are ACTUALLY good
Replies: 20
Views: 5037

Games that are ACTUALLY good

There's a ton of crap in the gaming industry today. I want you guys to name some games for me that meet my criteria. I'm looking for a game, like zelda or metroid prime, that is 3D. The game should be non-linear, or at least as non-linear as ocarina of time was. It should be hard, but not hard in th...
by Kurt_
Sat Jan 29, 2011 12:50 pm
Forum: Forum 42
Topic: Website Help
Replies: 1
Views: 718

Website Help

Hey all! Errr... I am no good with computers. At least, for someone who is good with computers, I am on the low end of the scale, but much better than the common folk. ANYWAYS, my website is crashing and burning and I need some serious help. http://mideas.ca" onclick="window.open(this.href);return f...
by Kurt_
Thu Jan 20, 2011 11:05 pm
Forum: Forum 42
Topic: Hey, what's up?
Replies: 23
Views: 5365

Re: Hey, what's up?

Sorry, I had to deal with a paradox. They're such a b**ch to deal with. When did I miss?
by Kurt_
Mon Jan 17, 2011 9:37 pm
Forum: Forum 42
Topic: Hey, what's up?
Replies: 23
Views: 5365

Re: Hey, what's up?

Mostly things involving pot, or plans for the future. Hopefully one day soon I can be an inventor by profession.Building things I think of and selling them for money. That'd be cool. And with my mechanical engineering knowledge, I can actually do them legitimately. I can do them well.
by Kurt_
Sun Jan 16, 2011 10:10 pm
Forum: Forum 42
Topic: Hey, what's up?
Replies: 23
Views: 5365

Re: Hey, what's up?

Sup Josh! Long time no see. Cennar: I thought you lived in London now for some reason... perhaps your location field. Maybe not tomorrow, seeing as the semester's starting to rev up (And won't rev down until summer), but perhaps over the weekend? On the weekends I have access to a car (read: my pare...
by Kurt_
Sun Jan 16, 2011 11:35 am
Forum: Forum 42
Topic: Hey, what's up?
Replies: 23
Views: 5365

Re: Hey, what's up?

Sick man, my girlfriend lives right around there. I'm at McMaster down in Hamilton. As far as the vapourizer, it's going to be legit, made from scratch, not from parts. I'm going to cast an aluminum ring that three brass rods fit in to that will be bent all nice like, these create a tripod. On the r...
by Kurt_
Sat Jan 15, 2011 10:08 am
Forum: Forum 42
Topic: Hey, what's up?
Replies: 23
Views: 5365

Re: Hey, what's up?

Hi all! I don't know if I'm going to be sticking around or not. I certainly don't plan on making another portable. In fact, I only came back because I'm trying to make a website, and after thinking about it, I realized a layout similar to Ben's is what I'm going after. It's at http://www.mideas.ca" ...
by Kurt_
Thu Jan 13, 2011 5:55 pm
Forum: Forum 42
Topic: Hey, what's up?
Replies: 23
Views: 5365

Hey, what's up?

Just thought I'd pop back in to say hey, since I was in the neighbourhood. Anyone out there remember me, or have the noobs taken over? I'm a third year mechanical engineering student now, and although I've moved beyond messing with circuits, I mess with plenty of mechanical things now. In particular...