[TowerTalk] Does prevailing grounding scheme promote large ground loop

[Hans Hammarquist]

 Steve,

The LM723 can probably be used as a "static discharge indicator". I don't know if there is a "hardened" version out now-a-days but I had plenty of (bad) experience with tha IC and would never recommend for anything but, maybe, as a fish lure. Unless it is placed in a circuit with plenty of protective circuitry it gives rise to plenty of reliability problem. The (very) good part is that most of the surrounding parts usually never breaks with it which make trouble shooting easy. 

I checked out your place and that looks very, very dry. How do you get any grounding there, a massive, heavy wire mesh over the entire estate?

73 de,

Hans - N2JFS

 

 

-----Original Message-----
From: Steve London <n2icarrl at gmail.com>
To: towertalk <towertalk at contesting.com>
Sent: Tue, Jul 26, 2016 9:38 am
Subject: Re: [TowerTalk] Does prevailing grounding scheme promote large ground loop


........
supply and 2 meter radio. After the storm, the power supply blew fuses. 
The root cause was a fried LM723 in the power supply, causing the 
voltage to go high, and the crowbar protection to be activated.

Sometimes I think moving to relatively lightning-free coastal Oregon 
would be a good idea !

73,
Steve, N2IC

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