FREE DC-DC CONVERTERS!!!

Post by **Skyone** » Tue Mar 28, 2006 1:13 am

Ohhh, it seemed as if you meant the bar was for nothing.

I know that the shorter side on most diodes and other components is the cathode/negative.

I get it know, and thank god I did it right!

Thanks!

timmeh87 · Post by **timmeh87** » Tue Mar 28, 2006 10:25 am

if you hook up electrolytic caps backwards, the electrolyte decomposes, relesases a gas, and the thing bursts open and sprays electrolyte everywhere.

if you hook tantalum caps up backwards, they melt internally and burst open

mot other caps can be hooked either way though

ATOMICMAN · Post by **ATOMICMAN** » Wed Nov 29, 2006 1:49 pm

sorry about bumping a way old thread

they seem to be out of the "h" ones, is there any difference from the others? i dont think it would affect the functionality if i got a different one...

i wanna get 1 for 3.3 and 1 for 5 for the screen =)

tau219 · Post by **tau219** » Thu Jan 11, 2007 10:47 pm

awesome dude i just got mine in the mail the other day. Heres a bump.

togg719 · Post by **togg719** » Fri Feb 02, 2007 8:40 am

Aw its not working its like a *dead link*

gasp

hailrazer · Post by **hailrazer** » Fri Feb 02, 2007 3:01 pm

togg719 wrote:Aw its not working its like a *dead link*

gasp

http://benheck.com/phpBB/viewtopic.php?t=15017

togg719 · Post by **togg719** » Fri Feb 02, 2007 3:29 pm

is every sample on that site like free free

timmeh87 · Post by **timmeh87** » Fri Feb 02, 2007 10:34 pm

its free on the assumption that you will consider buying at least 1000 of them in the future.

so its kinda like lying.

which is why you dont get any unless you need them.

g0ld3n · Post by **g0ld3n** » Sun Jun 10, 2007 1:45 am

Sorry for bumping this old thread but when I go here: http://focus.ti.com/docs/prod/folders/p ... l#features

It just says PURCHASE samples. Not FREE sample so could they have changed it or something?

Post by **Skyone** » Sun Jun 10, 2007 2:07 am

g0ld3n wrote:Sorry for bumping this old thread but when I go here: http://focus.ti.com/docs/prod/folders/p ... l#features

It just says PURCHASE samples. Not FREE sample so could they have changed it or something?

Apparently they did, us pesky anarchists.

Try the PTH08080WAH. Here's how to hook it up to get 3.3v out of it:

http://skytroniks.com/images/3v228v2.jpg

g0ld3n · Post by **g0ld3n** » Sun Jun 10, 2007 2:42 am

Wow thank you. I'll order my samples in the morning. It's 2 a.m. here and I'm tired. I was signing up but it's so tedious. Do you really have to put the real info? I mean, Company name, company role, office number, company name, etc? Wow, I'll do it later when I'm not falling asleep. Thanks again for pointing me out to this, you have been a true help.

Thanks again. Have a good night. Cya guys, I'm off to bed.

loverare · Post by **loverare** » Fri Jun 15, 2007 10:00 am

Hi guys
Sorry but I don't speak english very well. For the 3.3V line, we need 1.3-1.5A, it's true ? But with the dc/dc converter PT78HT233H we have at max 2A. How I can controle this current. The easier please. Thanks

vskid · Post by **vskid** » Fri Jun 15, 2007 10:02 am

loverare wrote:Hi guys
Sorry but I don't speak english very well. For the 3.3V line, we need 1.3-1.5A, it's true ? But with the dc/dc converter PT78HT233H we have at max 2A. How I can controle this current. The easier please. Thanks

It'll draw as much current as it needs, you just need to make sure it has enough. That applies to most electronics, but some weirdos like LEDs draw too much current and do need limited.

loverare · Post by **loverare** » Fri Jun 15, 2007 12:43 pm

Ok dude. If I have understand, a high current it's important for some components, but not for the 3.3v line. It's true ?

loverare · Post by **loverare** » Fri Jun 15, 2007 1:14 pm

And for this converter, I need a 100 UF electrlytic or tantalum capacitor in the output. But, if I have a 100UF 16V, for my 3.3V line, it's good. The 16V is the max acceptly or the min?