[time-nuts] Line Voltage frequency Interface morphed to batteries

Peter Gottlieb nerd at verizon.net
Mon Nov 28 22:54:56 EST 2011


Those capacitors in there can pack a wallop.  I've played with various strobes 
since I was very young so learned that lesson early.  Short it out and see the 
bang you get!  (don't use your good screwdriver to do this).

Yes, I'm sure those things can be lethal.

Microwave ovens can be even worse.



On 11/28/2011 10:42 PM, J. Forster wrote:
> Recently, I took an old disposable 35mm film camera appart. It had a
> flash, powered by a 1.5 V carbon-zinc AA battery. Inadvertantly, I got
> across the terminals of the flash capacitor and got a hell of a shock.
>
> Had the current gone through the right (wrong?) place, I could well be dead.
>
> -John
>
> ===============
>
>
>> Every time I follow a school bus that stops at a railroad crossing and
>> opens its doors to stop, look, and listen - even though there is no
>> sign with crossed bars saying "Stop, Look, and Listen" and there are
>> many flashing red lights when a train approaches - I think of politicians
>> who would not put their name to a bill that compromised children's safety,
>> in any way real or imagined.
>>
>> Lawyers are responsible for the death of common sense in the USA.
>> Trial lawyers, that is.
>>
>> Now, a 9 volt battery has a few centimeters between terminals, if that.
>> It is commonly accepted that electrocution needs a path through the heart
>> to succeed, as well as many milliamps. GFCI outlets trip at about 5 mA.
>> Pain begins at 10 mA. You would be hard pressed to get those currents
>> anywhere on the human body, never mind through the heart, with 9 VDC.
>> There is a reason why someone using a defibrillator shouts, "Clear."
>>
>> There was a time, before the internet, when most people were ashamed to
>> venture opinions on things they didn't know about, so they stayed quiet.
>> The anonymity of the Internet has made it possible for people to share
>> their ignorance with no shame, and we are poorer for it.
>>
>> Notice the obligatory use of the word "time" in the above paragraph.
>>
>> In the words of another organization for another reason, "Move on."
>>
>> Bill Hawkins
>>
>> OTOH, I remember being very afraid, at 6 years old, when my father
>> told me it was OK to touch the terminals of a car battery. I'd heard
>> that electricity killed, but I had no idea of the magnitudes involved.
>>
>>
>>
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>
>
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