[aprssig] Emergency Power for Ham stuff

Dave Schwartz Dave.Schwartz at netflash.net
Wed Jan 20 08:18:53 CST 2016


As my ham instructor said...

'When working around power, keep one hand in your pocket. If you don't 
know what you're doing, keep the other hand in your pocket too!'

On 20/01/2016 1:25 AM, Keith VE7GDH via aprssig wrote:
> Ray VK2TV wrote…
>
>> My concern isn't about using the laptop power supply, it's about
>> tapping the HV DC solar system to run the power supply. 300V DC
>> can be lethal.
>
> It's good to be cautious, but properly installed, it shouldn't
> be any more dangerous than plugging any appliance into a 230V
> outlet. I don't think Bob intended for anyone to be fiddling
> with live wires from a high voltage solar array in full sunlight
> with bare hands while standing in a puddle.
>
> Of course, I'll never forget reaching into my first power
> supply and learning the hard way why a bleeder resistor should
> have been installed across the filter capacitor!
>



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