High Voltage 555 timer circut

[Jbliss]

Anyone have any recommendations for a 555 High voltage timer circut that you have tested and know work. preferably with easily accessible parts
cheers JBliss   

[Jbliss]

anyone

[sean0118]

What's the application and what do you consider high voltage?

[128er]

Not trivial to interface a 555 with 10 kV 


What are your requirements? Switching mains? Or the high voltage power line in your neighbourhood? I would assume for some people here, anything above 3.3V is high voltage.

Please give more informations. For what application. What Supply voltage. Type of load. Prefered switching method. 555 circuit arrangement, e.g. astable, monostable, etc.

[Jbliss]

High voltage as in 20 Kv or 10 Kv for a shock.
powered by a 9v battery

[128er]

Is it just me, or . . . . errhhh 

[Seekonk]

And here I thought I'd have a chance to talk about an IR half bridge chip.  I bought a few thinking this could be neat.  Never have found a use.  600V 2A 555 50% duty cycle, just add a resistor and cap for timing.

[janoc]

High voltage as in 20 Kv or 10 Kv for a shock.
powered by a 9v battery

Mate, you obviously don't know anywhere near enough to tinker with voltages like that. I strongly suggest you stay away from them for your own and your (still) friends sake.

[Zero999]

Google for 555 flyback driver.

Don't shock people, it's dangerous and can get you in a lot of trouble.

[klr5205]

woah - I wouldn't point this guy towards a flyback driver.


I remember a unit in middle school where they let us make a little shocker that was camouflaged as a pack of gum so you could offer your victim a piece and give them a start when they pulled on it. You can question the teacher's judgement but it was far from dangerous.

I imagine that had a little piezoelectric igniter element in it... but at that level it was more of a craft project and they didn't really explain how it worked.

You could also discharge a capacitor (say 22uF at 3-6V?) through a step-up transformer and deliver a few hundred micro-joules.

[Jbliss]

Hi Just wondering if this would work?
no need to question my knowledge or be rude please. this is a beginner section of the forum   


BTW its not to shock someone its for testing!!!!

[MMDuino]

It's will work if you use Car Coil and a lot of 9v batteries in parallel to get good current , but be careful really it's dangerous things..

Hi Just wondering if this would work?
no need to question my knowledge or be rude please. this is a beginner section of the forum   


BTW its not to shock someone its for testing!!!!

[Jbliss]

How about this One
http://www.555-timer-circuits.com/stun-gun.html
remember i not using for shocking someone

[klr5205]

One of the limiting factors I think will be the breakdown voltage of the transistor which would clamp the flyback voltage. I don't think that circuit will produce 20kV but it should be capable of some sparks.

If you do build it, pay attention to the high voltage capacitors required...

[jlmoon]

woah - I wouldn't point this guy towards a flyback driver.


I remember a unit in middle school where they let us make a little shocker that was camouflaged as a pack of gum so you could offer your victim a piece and give them a start when they pulled on it. You can question the teacher's judgement but it was far from dangerous.

I imagine that had a little piezoelectric igniter element in it... but at that level it was more of a craft project and they didn't really explain how it worked.

You could also discharge a capacitor (say 22uF at 3-6V?) through a step-up transformer and deliver a few hundred micro-joules.

This activity sounds very familiar, when I was in middle school I made a very similar object (Form factor was a Kaleidoscope with two foil coatings on the outside of cardboard tube, batteries, multi-vibrator and transformer inside ) that was the talk of the student body for quite some time.  The flyback circuit activator was a mercury switch strategically placed so  when you held the scope up and looked through it.  You got a slight bit more tingle than just the Kaleidoscopic view before your eyes.  When demonstrating the thing you could hold it a certain way and all was good until the unsuspecting got a hold of it.     Totally harmless very low current fun indeed.  Needless to say, someone liked it more than me and it soon disappeared.