On 15-02-21 09:54 PM, Jeff Walton wrote:
Regarding your concern about the wooden housing:
That clock ran perfectly for
over thirty years with a wooden and plexiglass case and was no problem -
until 2005 when the voltage doubler shorted and caught fire. It had far
more power available inside the housing when things went wrong.
Back in that time period I worked in a computer store and we sold the
"North Star Horizon" computer. It came in an optional wooden case. in
order to sell it here in Ontario Canada we had to get the local power
authority to approve it. The inspector would not let us sell it until
we lined the inside of the case with aluminum auto-body tape in the
vicinity of the transformer and main capacitors (brute force 8V & 16V
DC supply for an S-100 Style computer) The unit was otherwise
conservatively designed and well fused.
--
Charles MacDonald Stittsville Ontario
[email protected] Just Beyond the Fringe
http://Charles.MacDonald.org/tubes
No Microsoft Products were used in sending this e-mail.
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