Tim, There are 2 parts that look like transformers. One has 3 legs and a wire out of the top that attaches to the metal reflector by the strobe; the other has 4 legs that are connected to the diode, the light, a transistor... and the fourth is connected indirectly to the transistor too. I admit that i know little about electrical circuitry, but i really want to know how to do this. I've built the stun guns before, but this is more complicated to me. Which Transformer do i desolder (Little or Big = 3 leg+wire or 4 leg). Which legs do i solder together, and where in the world do i reconnect the transformer?

Thanks I appreciate any help I can get, Mark

P.S.The Capacitor is a 330v120uF Nichicon. What would happen if i use this instead of the mylar 250 Cap? I don't want to do this wrong and BLOW UP a capacitor in my face.

Interesting article. Too bad the schematic is unusable.

i dont think you can put up any pics or stuff like that on this site.

i dont think you can put up any pics or stuff like that on this site.

hi, got your message parker what do you mean an article ? this flash really, really flashes and fast so all those other ideas on making a flash out of camera flash circuit boards can be thrown away cause this one works. and can also make a stungun circuit too. its the same exact circuit as a real stungun only its miniature sized.

Tim, you should make an article. (Hope you return to the site to see this mesage)

And Make one with which the figure is in working order. I'm getting a black image as well.

theres a more simple way to make a really fast strobe light out of camera guts.all you have to do is replace the cap with a mylar 250 volt cap , use a 9 volt battery, and use the same trigger tranformer only take the 2 legs desolder then put both legs together and solder to the transformer side of the output diode.and watch how fast this animal flashes.

i think it nice is presentation,but what happened to the figures...

it seems nice but i can't find a full idea from it.

send 1500w inveter circuit thanks sanjay malik

Can't read the figure.

I guess I need to mark this a 5 out of 5, since I used the same method to shut off a similar circuit. I chose to use a zener rather than rely on reverse breakdown of 1n914, but if they don't degrade or shift greatly with time/temp then it should work fine and be a lot less expensive.

I can suss out the circuit from the description. However, for everyone else you need to correct the schematic as it is munged up.

I suggest the gentle reader use the timing given to calculate necessary values. 5mS on time, 1.6KHz frequency. You can use one of the online Java calculators if you don't want to get your fingers dirty on a calculator or pencil and paper. Output of the 555 drives Q1, an NPN transistor, primary of coil from V+ to the collector of that transistor.

Rectified output of the secondary goes to a smoothing capacitor, and to two series connected 1n914 diodes, connected so reverse biased. Additional series resistor, then connected to Q2 base (NPN). Q2 base to ground is a small capacitor. Emitter of Q2 to ground. Collector of Q2 is connected to pin 4 of 555, and a pull-up resistor from there to V+.

I left out a bunch of stuff: current limit resistor from 555 pin 3 to Q1 base, misc etc. But maybe reading the principles of operation twice will help you suss out the circuit.

This seems like an interesting project..Shame i cant view the image..Any chance of the image being updated? P L E A S E...

Would be more useful if figure1 showed more than components on black background

can not see anything else than components on black background;useless at the moment...

Figure is useless-just a black area with a few component names visible. No circuit shown. These faults ruin an otherwise interesting article showing how to use scrap parts to make something useful

Picture still bad. Can't read it all.

What's wrong with the figure? I just get a black background with a few white lines. Please can someone fix this?

excellent idea to drive re-cycling solutions

good article

Interesting use for other wise trash parts. I love the recycling ;-)

Great stuff !!!

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