Anonymous321

So when I try uploading pics...

"There seems to have been a problem with the Electronic Circuits Projects Diagrams Free database. Please try again by clicking the Refresh button in your web browser.

An E-Mail has been dispatched to our Technical Staff, whom you can also contact if the problem persists.

We apologise for any inconvenience."

...............

john1

Oh well,
I will attempt to work with whats there.

Have you put that circuit together ?

Attached Images

Lab2-view above.JPG (21.2 KB, 5 views)

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Anonymous321

Yes, I have. I have a pic of it in a previous post. It's called "6". And I think it's just the size of the pic that's causing this. When I shoot a bird's eye view of it, the pic size is bigger than the other views.

Edit: Wait..that pic. I can't really see it.... Have you just rotated pic "6"? Or made your own?

Anonymous321

Ok got it. I had to bring the camera in a little. I hope you can understand it.

Attached Images

From Above..JPG (976.1 KB, 11 views)

john1

super .......

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Anonymous321

I was worried you were gone there for a sec, even though you were online.

john1

can you tell me what the blue drawings are under the springs .....

Or is there really nothing there ... ?

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Anonymous321

There are blue lines connecting springs. But those are just labels that were part of the box. You can ignore them. The labels mean nothing.

john1

sorry to keep you,

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Anonymous321

It's absolutely ok. I just hope that we will be able to accomplish something here. My heart's going to be pumping at 10beats/second until this whole ordeal is over.

john1

Okay, so there arent components and stuff underneath, its just labels on the box.

The transistor in that last pic,
cant quite see which leg goes where ....

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john1

I take it that its placed as per the blue drawing , yes ?

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Anonymous321

The spring where the red wire goes down to the -ve of 9V is the emitter. The spring where the red wire goes to the -ve of the siren is the collector. The other silver thing going up to the spring with no red wire coming/going from it is the base.

Anonymous321

Only the transistor and the 9V battery clip are placed according to the labels on the box. The siren (and the wires coming to it) are in the resistors section.

john1

Okay.
stick your voltmeter across the siren connections,
and connect the battery briefly, then disconnect the battery.

Any siren sound ?
Any voltage show on the meter ?

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