Papabravo said:I think the idea as you have described it is nonsense.
Sir,Boncuk said:
Hi Papabravo,
so far so good. The problem is easy to understand. You can have two different signals on one wire if you use different ground connections for each.
Drawing two poles and a wire in between will not cause you to understand anything, even if I draw the two circuits in it.
On the other hand I expected to join a forum where persons are respected as persons. That isn't quite the case according to your disqualifying post. From my profession I had to use the word "nonsense" with special care.
If I had used it a careless way I bet there would have been an outcome of at least 40% less pilots than there are in Germany.
So please be so kind as to watch your choice of words in the future.
Kind regards
Boncuk (also known as Herman the German)
You may not know that the neon lamp doesn't require a physical connection to the HV wire. The voltage gradient near the wire is enough to ionize the gas inside. I suppose this does impose some small load on the HV source, but I don't know how much.Boncuk said:Hi Papabravo and Ron,
I guess there is another way too to detect a section of a broken wire. However I don't have a better idea for the time being. There will be discharge only if anything or anybody touches the wire which is connected to earth on the ground connection terminal of the ignition coil. Using a power supply isolated from mains it would have a different ground connection. As an additional safety feature I could use relays to totally disconnect the current sources as soon as the ignition coil is activated.
The cost will be moderate compared with those of a new household every once in a while.
Using Neon lamps is certainly a good idea. Using 50 of them will require higher power than the ignition coil is able to deliver. A short electric shock of a maximum of 450mJ will not harm anybody, but give a distinctive signal to keep out.
Of course I could use just one Neon lamp and fire heavy machine guns as soon as the wire is broken.But it would be beyond my budget, replacing the entire fence for a broken wire.
Hans
Does this mean you expect an intruder to cut the fence in multiple places simultaneously, in an attempt to defeat your detection system? If they only cut it in one place, it won't matter that the downstream lamps are extinguished.Also cutting the line somewhere in the entire loop will cause all the follow-on neon lamps to extinguish, meaning in the worst case, cutting the cable at the feed line will not indicate anything but a general failure.
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