General Chit Chat about Sinclair Computers and their Clones
Well just to ruffle the fur a bit more... the zeddy isn't entirely 'closed'... so sone heat does escape...
6 x ZX81, 1 x TS1500 , 1 x +3e, 1 x timex 2040 printer, 1 x timex 2020 cassette deck, siclair printer and some spectrum
and due to its black case, it is nearly a perfect black radiator, able to emit a lot of energy as thermal radiation
My ZX81 web-server: online since 2007
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Maybe, but the thermal conductivity of the ABS plastic is not exactly great...siggi wrote: ↑Wed Oct 04, 2017 4:42 pmand due to its black case, it is nearly a perfect black radiator, able to emit a lot of energy as thermal radiation
A warm Zeddy does work nicely as a hand warmer. Just need two in winter, one for each hand
Incidentally, if you have a fan in your machine and that results in a forced airflow over the ULA (and 7805 if you are still using a series voltage regulator), then the ULA does not need a heatsink...