Electric shock

[Diver Fred]

As a child I had a serious shock caused by a F***ing Idiot idea of an extension lead - they had a length of cable with a 15A plug at one end, the other a 13A plug which they plugged into a 4-way socket strip to use. A friends family & house. So on that day I was given the 13A plug to insert into the socket strip - unfortunately someone in the house decided to switch the 15A socket on which is where the other end of the lead I had in my hand. I did a dance, may even had said some naughty words - but I knew it hurt. I was about 9 years old.

I never hold a plug fully in my hand since that day.

 

[JohnW2]

As a child I had a serious shock caused by a F***ing Idiot idea of an extension lead - they had a length of cable with a 15A plug at one end, the other a 13A plug which they plugged into a 4-way socket strip to use.

Ah - what electricians tend to call a "widow maker" (but I suppose that 9 -year olds are not usually married )

 

[davelx]

Worst one I've had was whilst I was tuning up the tank coil of a WS19HP ,whilst sitting on the metal cased accumulators. Threw me across the room, but no injuries.

 

[SUNRAY]

Worst one I've had was whilst I was tuning up the tank coil of a WS19HP ,whilst sitting on the metal cased accumulators. Threw me across the room, but no injuries.

The Pi tank coil in the set, the base coil of the tanks Aerial or the Variometer?

 

[opps]

No significant ones in recent decades, but a good few in my less-cautious youth (albeit extremely few that I would describe as 'serious') - mainly DC ones in range 200 V - 2,000 V in equipment I had constructed, and occasionally the ~15 kV from (LOPT-derived) EHT in black & white TVs!

Kind Regards, John

I have had a about 10 over the years- 4 years old onwards. Each was AC.

Years ago, my stepbrother worked for the same lift engineer that I temporarily worked for. One day he was doing some work on the underside of the lift car, he says he grabbed a cable on the underside (not noticing that the insulation had worn away). He was both fortunate and unfortunate. The DC locked his wrist around the cable and prevented him falling into the shaft. He ended up with a burn on his wrist where the metal battery compartment on his plastic watch was in contact with his skin.

 

[davelx]

The Pi tank coil in the set, the base coil of the tanks Aerial or the Variometer?

Pi tank coil In the linear amp. Amplifier RF No2 Mk3

 

[SUNRAY]

Pi tank coil In the linear amp. Amplifier RF No2 Mk3

Ahhh not the answer I was expecting, I could not really get my head around those as they were simply double the power of the main set (12-15W Vs 8-10W), was the gain of ½S point was really worth it?
IIRC the MKI had four 807's in parallel but then changed to a pair in push-pull. Or am I loading up the wrong aerial?

 

[davelx]

Ahhh not the answer I was expecting, I could not really get my head around those as they were simply double the power of the main set, was the gain of ½S point was really worth it?
IIRC the MKI had four 807's in parallel but then changed to a pair in push-pull. Or am I loading up the wrong aerial?

No, you are correct. You could get a bit more power at the expense of bandwidth, and as we only used 5330kHz and 4972.5kHz we were happy with that. Accurately cut horizontal dipole aerial with optimum feeder length.

 

[JohnW2]

.... was the gain of ½S point was really worth it?

I suppose that depends to some extent on how many (or few!) S-points one would have without the extra ½ !

One has to be careful of these 'incremental'/'decremental' arguments, since they can often be extended indefinitely 'ad absurdum'

 

[IfInDoubtDIY]

My story didn’t happen to me but to a former colleague, and it wasn’t so much a “shock” as a lucky escape!

He worked as a factory IT technician in an abattoir/meat processing plant and was trying to do work on a terminal unit - basically a metal box with PC motherboard in it and a touch screen on the front. He was fiddling about with the electronics inside - while the device was plugged in AND switched on! He accidentally shorted the live and neutral of the power supply using a screwdriver, and there was a loud bang!

For the next week we all took the p*ss out of the fact that he nearly killed himself, even though we knew it would have been no laughing matter if he actually HAD killed himself!

 

[JohnW2]

... we only used 5330kHz and 4972.5kHz we were happy with that. Accurately cut horizontal dipole aerial with optimum feeder length.

Quite a long dipole at those frequencies

 

[davelx]

Quite a long dipole at those frequencies

Strung between two trees!

 

[JohnW2]

Strung between two trees!

I bet it was not all that "horizontal", since I'd expect quite a 'sag' in the middle of a wire that long