555 Timer Based Flyback Transformer Driver

This is the second version of my previous 555 timer based flyback transformer driver on breadboard, this time it's on PCB. I designed the circuit in Proteus and used batchpcb.com to manufacture it.

This flyback transformer outputs about 20,000 volts and I'm using Sony 8.5 volts 5.65 amps powers supply from my old PS2.

Category:

Science & Technology

Tags:

• 555
• timer
• mosfet
• power
• transistor
• flyback
• transformer
• driver
• high
• voltage
• hv
• capacitor
• plasma
• spark

[ThePizzahero1]

Nice! I got a question. I've already popped 3 555's, could that be fixed by using diodes or what could cause that problem? Thank you!

[Gintaras]

@ThePizzahero1 Most of the 555's are rated 12 volts so if your power supply is anything more than that, that could be the propblem. If not then you probably need diodes to stop flyback current from the primary coil.

[randomness2101]

Hi, looks great!

I got mine working today, it shoots a 2.8cm beam of plasma and is scilent but I keep blowing up my mosfets. Is there a special type of mosfet you have to use of will anyone do?

[Gintaras]

@randomness2101 The first I'm using in this video is IRF840. When you drive a flyback transformer with a MOSFET the one thing you really have to worry about is the Amperage rating of the MOSFET. I've since switched to RFP30N06LE MOSFETs with a rating of 30 Amps and right now I'm working on a 350 Watt 48 Volts dual flyback transformer plasma speaker with a IRFP2907 with a rating of 209 Amps. The other thing you have to worry about is back EMF spikes so you have to use diodes to fix that.

[high1voltage1rules]

Awsome circuit mate ;-)

[randomness2101]

@Gintaras thanks, I had no diode :( rookie mistake.

[nikolaibolotin]

А СУБТИТРЫ ГДЕ ?

[MrGerbilBrain]

@ihos501 LOL, hehe!

[zxz38]

transistor ?



[LUVB6CPPgmodcsscoder]

hmm, super high voltage stun gun?