Flyback Transformer Drivers
Intro: Flyback Transformer Drivers
This instructable is the seventh one that I made. This instructable is about how to make a fly back transformer driver. There are two that I will show, one that is mechanical, and one that is solid-state (for the more technologically advanced). My inspiration for this instructable was that I made a mechanical driver, then it died; so I bought another one but decided to make a solid-state one.
Warning: this instructable deals with high voltage, so you could get shocked and potentially killed. I take no responsibility for any damage, injury, or death.
P.S. The picture you see on this page is copied and pasted from Google, so it's not this good or high power.
Warning: this instructable deals with high voltage, so you could get shocked and potentially killed. I take no responsibility for any damage, injury, or death.
P.S. The picture you see on this page is copied and pasted from Google, so it's not this good or high power.
STEP 1: Parts for Simple Driver
These are the parts that you need for a simple fly back driver. The pros are that it's simple to build and lasts a long time. The cons are that it doesn't make as big sparks as solid-state drivers, and it's very noisy.
Parts:
1- 5 volt relay
?- wires
1- 6 volt power source
1- fly back transformer with pins identified
1- on/off switch (optional)
Tools:
1- soldering iron
1- solder wire
1- helping hands station (optional)
Parts:
1- 5 volt relay
?- wires
1- 6 volt power source
1- fly back transformer with pins identified
1- on/off switch (optional)
Tools:
1- soldering iron
1- solder wire
1- helping hands station (optional)
STEP 2: Schematic for Simple Driver
This is the schematic for the simple driver. Just wire the relay like the picture has it. The two wires sticking on the bottom is what you connect to the power source and transformer. Just follow schematic #2 to see how to connect it all.
STEP 3: Parts for Solid State Flyback Driver
These are the parts that you need for the solid state driver. The pros are that it makes bigger sparks. The cons are that it's harder to make.
Parts:
1- 6 volt power source
1- on/off switch (optional)
1- fly back transformer with pins identified
1-555 timer ic
1-power transistor (see schematic and text file)
1-0.01 uf capacitor
?-resistors (it depends on whether you use the schematic or my info in the text document)
?- wires
Tools:
1- soldering iron
1- solder wire
1- helping hands station (optional)
Parts:
1- 6 volt power source
1- on/off switch (optional)
1- fly back transformer with pins identified
1-555 timer ic
1-power transistor (see schematic and text file)
1-0.01 uf capacitor
?-resistors (it depends on whether you use the schematic or my info in the text document)
?- wires
Tools:
1- soldering iron
1- solder wire
1- helping hands station (optional)
26 Comments
nmamirreza 5 years ago
i try it and its not working
i check transistor out put and it is 12 volt
why no sparking?
pls say to me wire awg or mm
thx
Count Volta 5 years ago
The first one is very retro but I will try it first.
TheGreatResistor 7 years ago
techno guy 7 years ago
The simple driver runs at a relatively low frequency, probably under 100 Hz.
It really depends on the size of your relay, bigger relays run slower than smaller relays.
TheGreatResistor 7 years ago
techno guy 7 years ago
Technically no because it isn't near the resonant frequency of the flyback, but actually yes (more like kind of) because you'll still be able to draw sparks from it, just they will be smaller and less powerful.
TheGreatResistor 7 years ago
TheGreatResistor 7 years ago
techno guy 7 years ago
Depends on the input voltage/current/frequency.
techno guy 7 years ago
Maybe 1 cm?
thefilipinoexperimenter 8 years ago
Excuse me, I have a question. Will the reverse voltage spikes not damage the 555 chip?
techno guy 7 years ago
It's possible, you should probably use some kind of diode for protection.
I have actually burned 555 chips from shorting out the output of the flyback.
johnl2 8 years ago
Sorry, but how on earth do you expect that relay driver to work? What oscillates the relay? As far as I can see, you have both ends of the coil wired in series between the power source and the transformer. I wired it up just for kicks, it turns the relay on and that's about it.
techno guy 8 years ago
Sometimes that happens, not sure why. In my tests I used a 5 volt relay, those tiny ones that RadioShack used to sell. It works by the relay turning on and swinging the contact which shorts out the coil causing the contact to fall back but opens the circuit and drawing the contact back, over and over.
-max- 12 years ago
Electrospark 8 years ago
Do you mean in series with the flyback transformer?
-max- 8 years ago
That wasn't exactly my original idea but it will do exactly the same thing.
Electrospark 8 years ago
Hmm... Yeah, I saw this configuration on the ZVS circuit.
I might give it a try but people don't want me to play with high voltage...
But it's so much fun... :( I guess I'll have to go with second best and watch photonicinduction's videos. :)
ahime1 10 years ago
techno guy 10 years ago