[time-nuts] Thunderbolt Supply
EWKehren at aol.com
EWKehren at aol.com
Fri Feb 11 01:54:42 UTC 2011
I use a 16 Volt Laptop power supply followed by Low Noise LT1764A linear
regulator for +12 and a 7805 for the logic. If you want to splurge use a
LT1764A also for the +5.. To generate the -12V a Microchip TC962 followed by
a 79L12 does a nice job. The +5 and -12 are not that critical. That is a
reliable and good low noise supply. I personally have added eight NMH cells
for backup and that adds extra circuits but I first started with the basic
circuit mentioned above.
Bert Kehren
In a message dated 2/10/2011 8:23:22 P.M. Eastern Standard Time,
timt at skybase.net writes:
Hi Larry,
I use a linear supply for mine.
My supply is actually a headphone amp supply kit from JayCar Electronics
here in Australia. Its basically two LM317's and a 7805 for 5v. I
changed the resistor that set the output voltage from 15v to 12v and
also selected an appropriate toroid transformer to suit.
Links here....
http://www.jaycar.com.au/productView.asp?ID=KC5418&CATID=25&form=CAT&SUBCATI
D=557
http://www.jaycar.com.au/productView.asp?ID=MT2084&CATID=19&form=CAT&SUBCATI
D=539
I dont know if you can get these kits in the US or if JayCar ship
internationally, you'd have to ask.
I'm sure you could find or build something similar state side :)
regards
Tim
--
VK2XTT :: QF56if :: BMARC :: WIA :: AMSAT-VK :: AMSAT
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