vk2fro
0
- Joined
- Nov 30, 2009
- Messages
- 1,304
- Points
- 63
my god I didnt think I would ever see one of these in ages; but here it is, burned out filimant and all! The poor thing has had a hard life on a brute supply and cooked its filament.
Still it bring back memories.
Sadly I have to post up the photo...
Blown filament, this little beasty brings back some memories. Yes it is making me cry looking at it. If only I had found sams laser faq before I saw one of these!
Damn, that brute force supply is the same way I ran mine. I wish I coulda got to this one beforehand and given it a nice regulated supply! Yep, whoever built it gave it but ONE capactitor. If your gonna brute it, use at least 4!
for those not in the know, the 240vac line comes in, is stepped down by the big toroid to around 100 volts, then rectified by the cap (theres a big bridge in there somewhere) then fed to the tube via a big resistor thats on the heatsink on the far right. A blower keeps the resistor cool.
*sniff* what a waste.
Still it bring back memories.
Sadly I have to post up the photo...
Blown filament, this little beasty brings back some memories. Yes it is making me cry looking at it. If only I had found sams laser faq before I saw one of these!
Damn, that brute force supply is the same way I ran mine. I wish I coulda got to this one beforehand and given it a nice regulated supply! Yep, whoever built it gave it but ONE capactitor. If your gonna brute it, use at least 4!
for those not in the know, the 240vac line comes in, is stepped down by the big toroid to around 100 volts, then rectified by the cap (theres a big bridge in there somewhere) then fed to the tube via a big resistor thats on the heatsink on the far right. A blower keeps the resistor cool.
*sniff* what a waste.
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