 Okay so I've made an improvement to this circuit and it makes the world of difference, so it's basically the same circuit as the last video, but instead of me powering the flyback with the same power 12 volts as what I do the 555, I've given the flyback its own power source, which should have really, yes, there should have been obvious in the first place, I mean I sort of knew it was that I had to give it some extra power, whenever I turned up the the chip supply of course the 15 volt I would kill the chip, hence the brown, the burning over the 2 to 6 pin bridge there, so what I'm doing now is to be fair I've just been testing on this but I'm just shifting up to here now because you've got more amps coming out of here, I'm not really sure if we're ready for that sort of jump yet, but it worked here 24 volts, I've got 20 volts there and this is just being powered by this part 11 volts at 200 milliamps and so hopefully, well I said hopefully I've done it, so I know we're gonna get a lot better, not better there, let me just, so 11 volts going into the 555 circuit and 20 volts going into the flyback and now if I first of all I'll just plug in the flyback because that's a switch and that's not gonna do anything until I start turning the valve on the gate, which I'm gonna do now and there we go, that is a much better and I wonder, I mean that's that's 24 volts, only if I change this frequency now, lovely, I don't know if anything's popped, looking at my, there's a good possibility that one arm is pulling too much power through that, I adjusted the frequency, I'm pretty sure that the transistor, the MOSFET has died because I was there with 5.8 amps spread across like it short-circuited out, now that's fair enough, you know I was a little bit silly and just turning that, because I know this does make a big difference on how that operates and these particular 555 seem to have on the square way since the noise is associated and let's see the 555 still works, let's just turn it back on and get it out of the supply and as you can see up there, this thing has to be, yeah that seems happy enough, I wonder if this thing just went into some sort of thermal breakdown because of the heat and there we go straight into high-ampage there, if I turn off the gate see if that works, still seems high-ampage, so I presume then that the the chip's a bit necky, but that doesn't matter, so well I know now that trying to drag 5 amps at 24 volts, 20 volts 24 volts through this, we'll kill it because it will get hot very quickly and and that's what's happened to this, this has died because you can see by the size of the heat sink that wasn't really going to dissipate very much and I sort of knew that in the back of my head and I figured I was just going to turn it up a little tiny bit, see a nice little thing and then switch it off but of course I got a little bit excited as you saw and I started wanting to twiddle the knobs and such and we died, not a problem, I seem to have a big bag in the heat, I don't need them where they came from, so I'm going to put another one in on a slightly bigger heat sink and just do some some tests turning the knobs but I'm going to restrict the power, I'm going to restrict the amperage and I'm going to restrict to 1 amp and the voltage to 20 volts which is still quite a lot of watts and I might even put it on one of these because that looks like that's probably going to do a better job at heat sinking as the surface area or probably could like to be more than this, it's all round that's going to be better well it's what I'm going to show you, I'm going to show you the difference between the IRF3205, the IRF630 and not those and the IRF840s because I've got a bunch of those, I've got some other transistors I'm going to try as well but I'm just going to go with these and see what this is, I would go with these, oh this is a 780, okay but I need to look this up and see what this can do first, so the ones that I know I can use will be these IRF840s like I said the 630s and 3205s, so first of all I'm going to go for, well not which I know is going to be the weakest, there's going to be the 840, we're going to chuck one on and pop it down there and see what happens just before I do that, I'm just going to, I've got myself a bit confused now with all these and use my trusty, this is brilliant, this is a great buy and I don't normally say that for a lot of the stuff they get from abroad and there's a lot of stuff that isn't very good, but this is what I like about this, it's a bit of a water size transistor, leads I've got, you know I don't have to put them in some ZIF connector, I can just connect it onto there, now I can't remember if this one's faulty or not, a self-test made is faulty, it's faulty that's what happens with this, it kind of comes up, damage parts, this is the one that I killed a few moments ago, now I know that these and the bags are generally okay, I've not tested every last one of them, I think you have to be reminded you've got 15 chips to come in to test them all, so I'm going to try the 840 first, she said, okay so this is the 840 and we're on, I'm going to put it onto, I'm going to set it, come here, I'm going to set it to, let's just go to 18 volts on the nose and all of them are going to be exactly the same, the only thing that I can't do, there we go, 18 volts, the only thing I can't really do is set this, but I'm going to put it to 5 amps right into middle, I've got two little markers I've put here, so I know when it's pretty much at 5 amps and that's going to be the same, further three on this test, so all right, I'm up further, continue, so that's already plugged in, it's already current going to, well okay that circuit's ready to go, we just need to get that gate and shift in some of this, so let me just get my hands on the appropriate position for this and it's only going to be short bursts and I'm going to turn on the supply now to the gate, yeah not, not, not great, not really great at all, so let's take that out, slight warming of the heat sink, okay so that's on there and this is the this is the IRF 630, we're in now, okay so everything's going to stay exactly the same, all we're going to do is turn the power on, you can't really see that that well, can you, it's because of those lights and then we can give it some gate signal, seems a bit better, a little bit better in the 840, a little bit better in the 840, let's just have a look and see now, what I'm doing and then we're going to go for these, the IRF 3205, okay let's pop that in, a bit of a tight squeeze, okay everything's the same, power's the same, everything's the same, again all we're going to do is just turn on the gate, okay, well at those settings in, I would say then it's possibly this, the IRF 630, was the better, let's make sure those are turned all the way to the, to the maximum, so I'm going to back this, oh you can't see, I'm going to back this part off all the way to the left, which means I'm going to be, if I just disconnect that for a second and just turn the gate on, I'm making the height of the frequency, I'm just lowering the frequency, turn it all the way to the left, okay let's turn that off again, power back into the big supply and I'm just going to see, I should have probably done that when I had the other chips connected rather than disconnecting and do it again like this, but I didn't expect that outcome to be that way, I thought the 3205 would be better, but okay well this is more part of the experiment and that's what we're trying to find out, what's what, so everything's still the same, same power and everything, except for I turn that gate cycle all the way back, I don't think it lacks that, so it prefers the frequency higher, most definitely, and if I just pull that out of there again as well I want to do, I just pulled out the bigger power supply and what I wanted to do, what did I want to do, I just wanted to double check what happens here, if I turn the other part, see again, oh no it's still just adjusting the frequency really isn't it, why haven't I got a frequency counter on, channel one, 20 kilohertz back to a lot though, down to 17, so it definitely does take it down, so it wants to be as far as it can there, and that's 42 kilohertz there, and it seems to be, seems to be happier like that, so, well okay, that's not on the output either, that, that isn't the output of the MOSFET, that's the output of the 555, okay, so, hmm, I'll be going there for a moment, so if I turn up the voltage a little bit, let's turn that gate off, and I just plug that back in again, I'm going to turn the voltage up to 24 volts, there you go, there it goes, yep, and then we're going to just try this again, which one stays still, so apart from the amps are still the same, from still the same, power against the gate drop was still the same, and that same just turned on, it's definitely still better than what it was, without, oh that's the IRF840, so this is the 840 in here now, given that little, I don't know how that worked, I was pretty, I seem to have lost my thing on this now, because I thought I'd just put a 32A5 in there, and that may have been the reason why it didn't give the results I was hoping for, so I'm thinking this is going to give me better, so let's plug that in, looks all plugged in correct, so I'm going to go back down to what we were on, we were on 18 volts, I'm going to go back down to 18 volts because taking it up now is not really, let me just set that to the middle, there we go, 18 volts, because that's what we were testing on the other ones, and so let's have a go again with this, I should have probably checked to ensure that I got the right turn, I've got nothing, I don't think I'm plugged into the right holes, this is, oh there I am, let me just check that's the 32A5 it is, okay so that's plugged in there definitely, time has been broken 32A5, turn that off, and let's give that, okay a bit of weathering again, that's plugged in isn't it, okay we've got nothing, we have nothing, so maybe I've got myself a dodgy, very quickly I'm just going to chuck one of these other ones just straight in the holes, okay because I just want a quick little there, and then we use, I do love the way these are all pinned the same, okay so let's give this a bit of a blast, because I was really expecting that just to work, and we seem to have a bit of a glitch in the matrix, there's a, something, he's not doing what it's supposed to do, so let's have a look at our, well we know all that side of things is working okay, that side of things looks like it should be working okay, or why is it getting to the workplaces, yep let's just try this, try this transistor, so that bleeps a little bit of a heat sink, unless it's got something to my heat sink, is my heat sink cut into this, this wire, we've got a short in there or something, it's possible, hmm yes I think we have, but just for a second it's gonna have to just, it's gonna have to just behave itself and work, I think what I can do is I can just shorten that a little time a bit and just, so I can pull it all in, there we go, so hopefully that's a bit further away, let's take that off, okay and see what we get with this, yep I think, I think that's the better one, now remember I've limited this to less, well it is, I think it's not limited, it's only limited by the, I start turning up the voltage, yep so we can say that's a bit of a success, and so I know that was a bit more to be turned up the voltage on that one, but from the little bits that I saw there, I think the 3205 is better in this configuration at these settings, for this, so I'm a lot happier now, that this circuit performs better, brilliant, I'm gonna go for success on that, cheers for watching guys!