Article View: sci.electronics
Article #4983Re: Spark Coils
From: collie
Date: Sat, 07 Jul 1990 04:24
Date: Sat, 07 Jul 1990 04:24
37 lines
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2603 bytes
In article <2082@electro.com>, eric@electro.com (Eric) writes...
>Oil furnace transformers can apparently give 50kv sparks and up
>while car ignition types give 35kv. To get some real sparks you
>need a Tesla coil. To do this you need to make your own transformer
>on a carboard form with some hi-V insulation and an oscillator
>driving a high V high I primary winding with a very fast slope on
>the rising and falling edges. ^^^^^^^^^^
^^^^^^^^^^^^^
Eric,is this a saw tooth oscillator ? I'm deeply intrested
in HV power supply,and I have heard about those oil burner transformers
from a friend.He said once a peepingtom used to bother his sister-in-law
so she told one of her other sister's husband about the problem,as
she was really afraid to go back to her house alone.
The crazy (EE) nut took one of those transformer and wired it to the
tom's favorite window,he took the secondary and attached it to a stake in the
ground under the window,soaking under the window well with water with the
other side attached to the screen.Then he sat in the dark with a big switch
to send power to the primary (on command),while his sister-in-law is in the
house.
The tom appeared on'que'at the window,and again trying too remove the
screen,all of a sudden the brother-in-law throw the switch.The arc jumped
across about sixteen inches,and hit the tom throwing him about ten feet from
the window.Then he thought the tom was dead,since he layed there for a few
good seconds without moving,but the good lord was with him.So he got and
staggered away never to return.
People do some crazy things without thinking sometimes,he was lucky
the tom didn't die other wise big problems,but I guess he felt something
had to be done as the cops did nothing.
******************************************************************************
collie
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!sunybcs!ubvms.cc.buffalo.edu!collie From: collie@ubvmsd.cc.buffalo.edu (collie) Newsgroups: sci.electronics Subject: Re: Spark Coils Summary: good luck Keywords: HV Message-ID: <30119@eerie.acsu.Buffalo.EDU> Date: 7 Jul 90 04:24:40 GMT References: <9007032018.AA27882@ucbvax.Berkeley.EDU> Sender: news@acsu.Buffalo.EDU Reply-To: collie@ubvmsd.cc.buffalo.edu Followup-To: collie Distribution: sci Organization: Square Heads.ee Lines: 37