Ever wondered what a television looks like inside? WARNING: Unless you know what you are doing and the associated dangers, NEVER go poking and proding around inside a telly. The Cathode Ray Tube (picture tube) is essentially one giant capaitor, with up to 32,000 volts (between 0.005 and 0.01 micro farads) inside and a conductive paint (called an 'Aquadag') on the outside, with the glass of the tube being the dialectric. CRT's have a vacuum inside, so much that larger CRTs can have up to 10 tons of air pessure outside the tube.

Now, back to the image.

On the very top, there is the neckboard, which connects the three cathodes (electron guns) to the HV flyback transformer, ground, deflection yokes and main circuitboard.

Underneath that, you can see part of the electron gun assebly (actually, three guns housed in one unit). This is what fires the three electron beams to hit the red, green & blue phosphors, to create an image in the screen. The electron gun sweeps the screen around 60 times a second, in a left-right, down to next phosphor layer on left and then right again and so on...

Then, the white plastic unit with copper wire strung around it is the deflection yoke. This is esentially just an electromagnet that bends the electron beams to cover the entire screen. There are four main coils for the vertical image and the horizontal image.

Around that, you can see the conductive 'Aquadag' paint on the tube.

Now for the anode. That fat red wire with the 'suction cup' on the tube is the anode, which drains electricity from the tube back into the flyback transformer, which is mounted on the circuit board at the top left.

Just remember, NEVER poke around inside these unless you know what you are doing.