[time-nuts] WWVB remodulator for the Spectracom 8170...

ed breya eb at telight.com
Wed Jun 19 10:41:38 EDT 2013


I sent this on the 18th, but it didn't show up, so here goes another 
try. I don't know if something's wrong with my email. Please excuse 
if the redundant original shows up too.

Original message:

At low frequency, the HC parts should take very little dynamic 
current - the big current draw is from biasing gates in the linear 
region for oscillators and low-level signal triggering, for example. 
Running them at minimum voltage should reduce the current a lot. 
Sometimes it's best to separate the linear-biased items and run at 
lower voltage, or from a slightly isolated version of the main 
supply, via a resistor (and a bypass cap), to limit the current in 
case anything gets stuck.

Ed



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