Yes,  what is the final solution??  Now that I want to use a 12C508
and looking left and right, up and down for a UV eraser!

I checked around and found that Sylvania makes a 18" tube
(P/N F18/T12/350BL/700/PH with 202-BTCP ballast) which is also
suitable for making PCBs at home.  Anybody who can comment on this,
please.

Morgan Olsson Wrote:

>  << ANy thoughts on a UV eraser?
>
> It just struck my mind: *cheap*!  (But does it work?)
> Theese light tube starters, (not electrionic models): If I remember
> correctly: in open state when powered they emit a little UV-radiation.
>
> Maybe possible to cut the Glass bulb out, place it on the PIC window and
> power it from the mains thru a power resistor? (To much power will make the
> switch close...!)
>
> ...Wait a minute...
> There: I've built it:
> 27k ohm 1W resistor worked O.K for "4-65W" igniter (230VAC mains)
>
> But does it give UV?
> I tried to check using paper-money (what is the english word?), to see the
> serial number glow,  but either it is not UV, (or right kind UV), or
> someone have cheated me...  ;-}
>
> The visible part of light is orange-purple (not like discharge-type
> indicator lamps) I wonder if the purple part extends to UV?  Maybe elder
> types radiated UV, but not modern (health improvements)?.
>
> I do not have any PIC to erase now, sorry.
>
> PS
> Another crazy idea: The ends of regular light tubes (where the white powder
> is not on the inside) radiates UV?  (The white powder transforms the UV
> from mercury gas dischargings to visible.)  Radiation is probably low, and
> difficilt to place PIC there, but anyway...
> DS
>
> DS2
> Has anyone yet experimented with the hight electric field / high dv/dt
> erasure method we discussed here earlier?
> DS2
>
> /Morgan
> /  Morgan Olsson, MORGANS REGLERTEKNIK, SE-277 35 KIVIK, Sweden \
> \  mrt@iname.com, ph: +46 (0)414 70741; fax +46 (0)414 70331    /
>