Torben

Well, that and the fact that he asked for an abstract.

Oops. I guess what he really asked for was an 'apstricat'. Damn I like that word. I wonder if ElectroMaster will change my username to that? (Kidding.)

If the OP had bothered to put in some effort I wouldn't have minded helping out but I didn't want to just spoon-feed him. Let's just hope the instructor notices when the assignment is a copy-paste from Wikipedia.


Torben

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Curiosity was framed. Ignorance killed the cat.

BaCaRdi

Very true...lol

-BaC

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Menticol

Well I have made a prehistoric H-bridge using relays, but I forgot to actuate them at the same time, and the safety diode. I have spent 2 hours, one finding the fire's source, and another wondering why I got shocked every time I touched the thing.

By the way, I have a noob-newbie question. Please, dont laugh



Why does the transistor blow up? The circuit is the old paralell port trick

Thank you in advance!!

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La Rotta

If you are those who adds new features or appearance to everything around, and take the limited budget to the limit, this blog is for you (spanish)

BaCaRdi

Hey we all started somewhere! Don't worry we all make allot of mistakes in our lives, all of us.

Don't take it to heart when we kid around, we all have been there at one time. That is what makes it funny in the fist place

Sorry but you image link is not working..try again please..

-BaC

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Mikebits

Your diode on the collector is upside down.

BaCaRdi

Crap is something up with my browser again! Is everything ok with his post?

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Mikebits

Looks okay to me.

BaCaRdi

$#@!%!#%#! I need a rebuild on this lappy bad! Thanks, for verifying it for me, off to figure out whats wrong with this VM now....

-BaC

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Menticol

edit: I looked again but seems fine to me :S My book lied

Haha I know, love that about this forum. Some mistakes don't make laugh but cry, i.e. crushing a fallen PIR sensor with the chair wheel

edit: try to clean your browser's cache Bacardi! If youre using firefox, put about:cache?device=disk ond adress bar and you can see your cache's folder location

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La Rotta

If you are those who adds new features or appearance to everything around, and take the limited budget to the limit, this blog is for you (spanish)

BaCaRdi

Cheers didn't know that one, I have used about:config allot though. Have you ever tried the about:mozilla one?..lol

Funny I cleared it with ctrl shift del, but for some reason it left Electro-techs cache. Wouldn't have known that if you didn't tell me that tip, so you solved it indirectly..hehe

-Ba

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Menticol

I'm glad it worked, Bacardi!

I have flipped it, but the relay doesn´t move... And I think the transistor is blown up again... The circuit works perfectly with 5V relays, but I like to spend my 12V relay "stock"

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La Rotta

If you are those who adds new features or appearance to everything around, and take the limited budget to the limit, this blog is for you (spanish)

audioguru

When the diode was backwards the very high current that blew the transistor might have also blown the diode across the coil. Use new ones.
Also there is nothing in your circuit to limit the base current of the transistor. If 5V is applied to your input then the transistor and the diode in series with its base will blow up.

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Uncle $crooge

Mikebits

lol, I have actually seen classmates turn in typed reports, and did not even bother to notice the Wiki font changes and colors when they cut and pasted. Geezo, what boobs.
Apstricat sounds like a cartoon or something...