[600MRG] Smoke Alarm I - more

[Kenneth G. Gordon]

On 21 Oct 2014 at 16:41, Frank Lotito wrote:

> Is a 0.01 uF bypass cap adequate for 500 KHz?  At 14 MHz its (ideal) reactance
> is 1.1 ohms.  At 0.5 MHz its reactance is almost 32 ohms.  If the line impedance
> is high, such as a few hundred ohms, maybe it will be sufficient.  Maybe - but I
> don't get a warm fuzzy feeling.  To boot, if this cap is across a 120VAC 60 Hz
> power line something more deliberate w.r.t. safety has to be included when
> choosing the bypass cap. 73 Frank Lotito, Plum, PA K3DZ and pending WH2XHA 

I'm sure you're correct, Frank. I just grabbed that number off the top of my 
head.

Carry on.

Ken W7EKB