Discussion in 'Circuits' started by Admin, Apr 17, 2013.
This thread is for the discussion of the Stun Gun circuit.
I have three questions about the stun gun-circuit:
* Is it possible to use Mylar film radial capacitors?
* Which voltage capacity must i use for the 10 & 100 nF capacitors attached to the 555 timer?
* Is this the correct audio-transformer: http://www.ebay.com/itm/151090731257?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649 ?
I am going to give these .11uF capacitors a shot, with a smaller audio 1K transformer I got from Radio Shack that has similar specs to the 1K:8R transformer N83 mentioned. I am still waiting on the BD679 part, the one I have in the image is a placeholder. I constructed some prongs with picture hanger hardware, lampwire and a piece of plastic packaging I cut up.
Looks interesting. Let us know how well it works.
Has anyone actually got this going and have a picture where everything can be seen?
This guy has. He even tested it.
I have built this and then look for upgrade transistor. I almost having bought NPN instead of NPN Darlington on digikey which is 5 dollar in radioshack. I wonder why stun circuit 555 timer design only show NPN instead of NPN Darlington?
I've built this circuit, I had to use a BD 681 rather than a BD 679 because my electronics store did not stock 679's and they said the 681 was an alternative.
But, I cannot get it to work. I think where I'm going wrong is where the transformer is positioned and what to do with each pin. The most I've gotten out of my circuit is short several second long noise from the transformer and a single spark.
Does anyone have a breadboard layout?
I need to know what is specs of your transformer. What is ohm on primary and secondly?
I have the transformer from the diagram, 1k:8R, its centre-tapped, not sure what to do with each pin. Here's a link to where I got it from: http://m.jaycar.com.au/m_productView.asp?ID=MM2532
I think you got worst transformer. They sell transformer without detail or database. This is not very good website so don't trust them. I'm sorry that you probably waste for it. From my experince you might doing something wrong with it. there are core that divided between primary and secondly.
I have photo that I'm going to show you.
Sorry I forgot to say about 1000K, they are connection to high voltage capacitor.
If it didn't work, check it with your multimeter on ohm mode. It should be 8 Ohm and 1000 kOhm. If it is not in range 7-9 Ohm and 980-1080, then you will need to get different audio transformer.
You will have to buy it from Digikey.com or Mouser.com, because they're the better. I always put my good money on Digikey. I'm pretty sure you will say it is most expensive but they're worth it.
Thanks, luckily I bought it from my local store, so I can return it. The secondary measured 3.2R and the primary measured 315R! Way off!
I still got a spark though, but only a single spark? The transformer also seemed to be only on for several seconds. (Assuming its only on when its humming).
I might see what other transformers they have, I like to refrain from buying online. Especially with things overseas.
I have these three transformers from a DVD player, I don't know their specs and I'm not sure what type they are though. If they might be adequate I can remove them from the board and take some measurements.
This is Switch Mode Power Supply Transformer. Primary are winding about 10 turn with feedback about 3-4 turn, then secondly are about 4 turn. So they are not going work for taser stun 555.
I could help you to find good audio transformer if like. I had like to ask something. What are store you bought audio transformer from?
Ah okay, thanks for that.
I got it from Jaycar electronics.
Okay. I hate to tell you this but some components in this store isn't any good due to lack of detail and database. Avoid this audio transformer. The only good audio transformer I know is Digikey and Mouser. If you found audio transformer and want feedback, I will be glad to help you out.
Eagle schematic and board layout in attachement, i haven't tested it yet.
Hi. Can someone please let me know what volt are the 10n and 100n capacitors please? Also in your circuit I noticed that you connected the negative to pin 4 and 8 on the 555 timer.
I have used 100n and 10n 400v capacitors but didn't work. Can you please help me on this? Thanks
Hi there. Can you please let me know what voltages are 10n and 100n capacitors? Regards
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