[time-nuts] HP5065A Rubidium questions: some progress

Dan Rae danrae at verizon.net
Mon Feb 20 21:23:20 EST 2017

On 2/20/2017 4:25 PM, David Scott Coburn wrote:
> One odd bit is that the resistor in the transistor emitter leg 
> measures about 350 ohms (this is R3 in my schematic).  The schematic 
> says it should be 10 ohms.  This resistor is on solder posts, so it 
> looks like a 'selected at assembly' item.  Corby: it this the 12 ohm 
> resistor you mentioned?
Scott, there's no way that oscillator can deliver the power needed to 
excite the lamp with that high an R3.  Something like the specified 10 
Ohms is needed.


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