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Trouble with Shocker

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Cry_Wolf

New Member
I decided to build a shocker that operates at 6V. I build the following circuit. It worked fine and when i powered it it gave me humming sound which means that the relay was switching on and off at very high frequency.

But the problem is when i connected a small mini transformer(Which i got from a my cheap old charger) across point A and B it did'nt worked.

What could be the problem. I know the problem is with the transformer, Can any one tell me which transformer to use??
 

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Cry_Wolf

New Member
Well if you say that polarities are wrong in my diagram, then again my circuit is not working because i tried by both the ways
 

JTECH

New Member
Shocker

Did you verify that the transformer you used is only a transformer and does not contain any rectifiers? You don't want a rectifier to shunt your generated high voltage, so it must be a true transformer with the low voltage secondary connected across the coil of the relay to give you the required step-up. (Important also is that the impedance of the transformer winding should be approximately equal to the impedance of the relay coil, otherwise the current will have a preference for which ever one has the lower impedance). (Output is on the high voltage side).

Try to find an open type relay and wind a few thousand turns of very thin wire on top of the existing coil if space allows it. This winding can then be used as the high voltage output. (Just a thought!).
 
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Nigel Goodwin

Super Moderator
Most Helpful Member
Cry_Wolf said:
Well if you say that polarities are wrong in my diagram, then again my circuit is not working because i tried by both the ways

I didn't say the polarity was wrong, I said you've connected the transformer to completely the wrong place - and it's nothing like the link you posted.

I'll give you an extra clue (although there's almost no components to get confused by) - you've connected your transformer directly across the battery!.
 

Cry_Wolf

New Member
Ok I got it, actually i drew the schematic wrong in hurry. So here's the schematic of the circuit which actually i made.
 

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Nigel Goodwin

Super Moderator
Most Helpful Member
That should work then, although personally I'd probably connect point B to the other relay contact, so it 'makes' as the relay switches.

There's really nothing to go wrong, unless you wire it wrong.
 

Cry_Wolf

New Member
Ok can you tell me which transformer to use. I actually broke a old nokia charger to get a transformer if you can specify one it would be helpful. :D
 

Hero999

Banned
Nigel Goodwin said:
There's really nothing to go wrong, unless you wire it wrong.
The relay will expire pretty quickly as they're not designed to work at that frequency.
 

Cry_Wolf

New Member
any alternative to relay??

Actually i am having a party soon in my university :D so i am in urgent of a shocker ;). Any help would be appreciated.
 

Nigel Goodwin

Super Moderator
Most Helpful Member
Hero999 said:
The relay will expire pretty quickly as they're not designed to work at that frequency.

It's not like you're wanting it to run for days at a time, it should certainly last much longer than it takes to get bored with it - and has the added advantage that it will stop working well before the hospital get around to removing it from where it gets shoved! :p
 

blueroomelectronics

Well-Known Member
I guess when there's no beer; a shocker is good fun at a college party.
4631-handbuzzer.jpg
 
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Papabravo

Well-Known Member
Yup. "Beer is proof that God loves us and wants us to be happy"
B. Franklin
 

Krumlink

New Member
a disposable camera, solder leads to the caps. Simple.
 
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