{Collins} Re: HP-23 PSU conversion

[gregory.beat@xxxxxxxxxxx]

Bob -
Well you could also order the PC board (HP-23R) for $ 15 from the Heathkit Shop :-)
http://www.theheathkitshop.com/hp23r.html

w9gb

-------------- Original message -------------- 

> OK, OK, I'm monopolising the list. :o) 
> 
> I've ordered a TIP-50 and some 90v zeners to make a 
> 275V regulator to add to my HP-23. Is there any 
> reason I can't just use the metal frame of the PSU box 
> as the heatsink. From what I see, it shouldn't be 
> more than a 5W load. 
> 
> Bob - AE6RV 
> Sponsored by the Collins Collectors Association http://www.collinsradio.org 
> Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central 
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Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central