924Board.org

[musicalannette]

Hi all, i had a request for a drawing I made of the ignition amp on my 924 N/A 1983.

please be aware it something I drew in about an hour, have not double checked or have added the component values to. it could do with double and triple checking, but if your like minded and know your transistors from your resistors you can do this work if you have the time available.
R17 alone is enough for a double check. It may be there from either a previous developement or for testing/setting up the final design. however it's presence means it wants a double check at least. this may come in handy if you intend to repair the boxes or wish to take your box and dizzy to the local tv repair shop for them to fix, it really should be a breeze for a competent tv repair guy.
If your feeling brave or you know how to use a 'scope then T1/2 get the signal change from the dizzy, this is then amplified to T3 then T4 then switching the power transistor T5.

Here goes i'm not too hot on posting photos:
[img]https://picasaweb.google.com/102302523869797900180/IgnAmp#5727238628329190050.jpg[/img]
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I KNEW white wall tyres were invented by Americans .....just not at Boeing.... to be fitted on the 737.....

[musicalannette]

and agian~
[imghttps://lh4.googleusercontent.com/-mY-PaqJkesE/T3s9MDF08qI/AAAAAAAAADQ/FBHw-uqHMwQ/s1024/924%2520ign%2520amp.jpg
[/img]
_________________
I KNEW white wall tyres were invented by Americans .....just not at Boeing.... to be fitted on the 737.....

[musicalannette]

and again!!!


_________________
I KNEW white wall tyres were invented by Americans .....just not at Boeing.... to be fitted on the 737.....