[GreenKeys] 120VDC power supply noise?

[Don Robert House]

Harvey,

Back aboard the USS Randolph in 1965... I was trying to find a hot  
shorting capacitor in a power supply. After trying this and that I  
was getting tired and forgot to unplug and discharge the supply...  
You can guess what happened. I got between ground and the output.  My  
muscles reacted so violently that the long nose pliers in my hands  
flew backwards and stuck in the metal bulkhead covering behind me.

My arm and right side was sore for a week.  I guess "once burned,  
twice shy" would apply here.  The only other "memorable" shock I  
received was during my years as a Teletype installer repairman with  
Illinois Bell.  Getting ahold of a telegraph loop that was wired for  
both positive and negative 130 volts to reach a machine on a long  
loop.  WOW... I guess I am lucky to still be alive.

Today, at age 63, I work on old Macintosh computers and am extremely  
careful when poking around their innards.

Your contributions to Greenkeys are very astute and valuable.

Many thanks,

Don R. House, K9TTY
AX2 (AC) USN 1962-1968
Bell System retired 1966-1996


On Oct 9, 2005, at 9:37 PM, KC0NNC at aol.com wrote:


> At 60 years of age, I can attest that I was, and continue to be, quite
> careful while working with these voltages and currents.
>
> 73's
> Harvey E.  Smith, KC0NNC
> 2020 Baculite Mesa Road
> Pueblo, CO., 81001-2456
>