On Sun, Jan 8, 2012 at 3:01 PM, David davidwh...@gmail.com wrote:
If noise was so important I wonder why they did not use a lower noise
switching regulator or the LT1375 which supports oscillator
synchronization.
Maybe noise WAS important, so they removed the regulator altogether. That
I suspect the reason was far simpler: 5 volts was available in the system,
why not use it and take the small amount of heat out of the box. There would
also be a reliability improvement, one less regulator per freq standard.
I bet the cost of the regulator is insignificant compared to the
Hello,
After posting a few days ago about one of my '5680A's having the voltage
converter installed - but not connected - I've done a bit of
reverse-engineering and sleuthing around and (probably) have a fairly
complete picture of what it would take to populate that section of the
board.
On Sun, Jan 8, 2012 at 1:51 PM, Clint Turner tur...@ussc.com wrote:
Hello,
After posting a few days ago about one of my '5680A's having the voltage
converter installed - but not connected - I've done a bit of
reverse-engineering and sleuthing around and (probably) have a fairly
complete
On Sun, 8 Jan 2012 14:23:02 -0800, Orin Eman orin.e...@gmail.com
wrote:
On Sun, Jan 8, 2012 at 1:51 PM, Clint Turner tur...@ussc.com wrote:
Hello,
After posting a few days ago about one of my '5680A's having the voltage
converter installed - but not connected - I've done a bit of
Hi,
Are you sure about those resistor values? They look like 5.11K and 5.62K
(standard 1% values) to me.
Whoops - you are right: In squinting at the board I'd thought about turning
the thing 180 degrees since the numbers look believable either way! These two
5k-ish values are more in
