 Hey there YouTube, I got a little thing coming through the poster there, let's see, now this is a buck converter and at the same time it's a boost converter, okay, and I thought I'd give it a go, now I've seen them on eBay between £9 and £10 these, but I opted for the one with this, I'm not going to turn it over to show you just at the minute, but underneath here is a aluminium slab heat sink, not this, I'll just put it on top of this, just forget about this, but here you can see there's a heat sink, and it works out well, I've not, a few minutes ago I had it up on 12 volts, I was drawing 61.2 watts basically, and it wasn't really getting warm, and there was a little bit of heat off the inductor, it was a little bit warm, but not warm, not anything you'd be worried about or anything like that, but then I sort of messaged a sort of YouTube poll and talked about this, and said that by, because there's one volt, this is switched all the way down, I can't turn it down any further on this part, and it's around, you know, there's nearly a volt there, and depending on the load I suppose, I've got a very low voltage, this at the moment, this is set on what would be high beam, and it's around between 200 and 300 milliohms the resistance through it, so it's not a great deal, but look, less than a volt is 1.2 amps, and that equates to our 1.1 watts, which isn't a great deal, and you know, as you'd expect, it's got a 12 volt input by the way, I've just done the old PC power supply trick, I've just bypassed the sense switch, so it turns on, I've not done all the wires, I've just got 2 here, 12 volt, and then negative on my input, and on the input there I'll just connect to the display in the working side of, the reason why I put the resistors is I don't like these as bright as what they would be without the resistor, a little bit more bright and glaring, but I like these sort of dim, and I prefer these to the red to red ones as well, one because when you put more than 37 volts into it, it will just go blank and then come back, and two, and I think this is more important, it doesn't flash, like when I'm looking through it on the video, it doesn't flash, so yeah, quite likely I've ordered another one, I've killed the red one, and I'm not even going to bother trying to fix it to be fair, I only do like £2 to buy them, £2.11 is what I've paid for another one of these, I might buy another couple, anyway, I don't regret it, so yeah, this little thing, so I bought it, £11.29 it cost me an actual bit, look, hold on, you can see that good, yeah, and if I just get my keyboard, sorry, my keyboard's down here, in this drawer, and let me just, I've lost a bit on my keyboard to work it, so I'm going to have to just pull down on there, see there's the, that's the aluminium piece underneath, there's a heatsink, that's what's underneath when I've got the cheaper ones I've seen, don't actually have that there, on these, I don't know if they're MOSFETs or transistors, but on these H, this H bridge, they've got like a heatsink here and a heatsink here, just small ones, I opted for the bigger one on the back, come on, when it comes to this stuff, it's, you just want to dissipate as much heat as you possibly can, don't you, I mean that's why I've just like chucked it on here as well, because I didn't know how it was going to, how it was going to be at 12 volts for this, this type of load, because I'm sort of like, yeah, pushing it, apparently you can go 10 amps for this, but what, 10 amps at 30 volts, and that's like 300 watts, come on, really that's not going to dissipate that very well, and I don't care how good this is supposed to be, this little tiny heatsink, 300 watts, getting out of it, so, see and the reason why I decided to buy it was because as well, it's got, like I say, I mean okay with this load, that's not very good, you know, I mean you could turn your amplitudes down, and sort of like probably drop out, so look, I don't know, that's, that's all the way down, that's all the way down, you can hear it clicking, so with that load, that's here, I mean that's 1.2, like not 0.9 volts, but still, hmm, I mean you could drop that down a bit more, it'd be quite easy enough to stick a diode on here, but if you are going to be joining it, you have to be a big fat diode on there, I had one on the earlier just so I could drop it down, you know, sort of 400 millivolts, and that was about a 3 amp diode, it could have been a 5 amp diode, but that was not really going to be big enough, I do have a couple of blocking billiards that I had before I got my charger controller, my solar panel, I'll put one of those on there, that'll drop you down a bit of course, that will reduce this down as well, I don't know if I could try that, I'll have a look at that in a second, but yeah another good thing about it here, we've got a fuse, so if it blows the fuse in input perception, if you were going to charge a battery with it, you'd have to put a diode down here as well, just so, you know, when stop charging where the battery gets to the voltage, you know, start trying to push it voltage back, but this was going to be part of the power supply thing, like I said, what I like is, look, at the minute it's a buck converter, because we've got 12 volts going in, and we've got like, a nice little bulb coming out, there's a buck converter, and if I start turning it up, I'll have to turn the current up a little bit, it'll always end up being a bit of a voltage, it's got a good few turns, so you don't get restricted on that, here's constant current, constant voltage, so you can adjust it, and so if I start turning this up a little bit, and then we go on, it's going to get bright, so hopefully the camera will come and see, and it's going to 12 volts, and just see if we can still see, you know, it's having a good old time, like, light, isn't it? Yeah, let me just turn that down, I'm just going to, these wires are just pricking the holes by the way, it's a typical me, what I'm going to do is, I'm just going to find something, it's pulling away, like, light, so it's not somewhere on, oh, I know what I got, I'm going to be careful with this light, because I've had all the transistors in the back of this heatsink, I only use this as a pass transistor array, I suppose you'd say, in parallel, 3 of them in parallel, for a 0 to sort of 60 volt linear power supply, I'm going to put it like that, put it forward like that, it's only wobbly a bit, because of the elastic band, so let's go back here, I found my tool, this is a brilliant tool for turning these things, yeah, yeah, let's see, it's 12 volt, I put it on 12.8, I put it on 12.6, that's what my battery would be on mine, oh, charger, so there, that's new enough, 60 watts, that's more like 60 watts, I haven't got my calculator, but I'm guessing that's around about 60 watts, got 12.7, time 4.84, like I said, it doesn't really get too warm, and I don't think the bulb is going to be able to take much more, I don't think it might be able to, it should be able to take at least a couple more volts, just because if it was charging in the car, it'd probably go about 15 volts down to it, I don't know if you've got any current restrictions up here, we'll look at that, 15 volts, I don't know if you can see it right, I don't know if it'd be able to do that, I don't know if I'm going to find, no, it does show, it does say on the, no idea, that's, oh right, I see, yeah, this camera really weird to me out sometimes, so I'm going to sit again, see, that's not really hot at all, it's a little bit warm, yeah, of course you can feel it, it's putting some power through there, I've got this all the way over there, if I just pop it out there, okay, so I'm just going to quickly, my battery's all there, okay, thank you, so we've got 14.7 times 5.25 equals 77.175, see that, that's going to be good enough to see that, so, and I'm pretty sure it says, if you run it at like 80, because it's supposed to go to 130, but I can't, I can't take it, because I'll just break this bulb, oh, I think I can see smoke coming anyway, but that could be a little bit, I mean that is smoke, I'm just going to, I don't know if you can see, it could be the, it could be something stupid, the flux, it's sat on a flux can, so I'm just going to current limit this down, I don't know, it sounds like two amps or something, that's even dangerous, if I can, it wasn't touching before in the actual bulb, that's very, very warm, of course I'm not going to touch it at all, but that's my tin of flux, so I saw just a little, a little bit of, a little bit of smoke coming off that, that's not bad, I'm quite impressed with this power supply as well, it doesn't, I can see this is going to come in quite handy, and my other power supply as well, because I'm going to put these into the booster, I've got two of these boosters and both of them I've managed to get for free, and I'm going to tell you now that these fellows who sell them, I've messaged a load of them to ask them about their same boosters, of course now I can see the wire on it, but they're still trying to tell me you can adjust the current, and I've tried to tell them that the pins aren't even connected from the adjust potentiometer, but they're not listening, so this is my advice to anybody that listens to this, buy one, buy one, get it, complain that the adjust doesn't work, tell them that you're going to send it back, do a return, and they won't pay for the postage back, because it's as much as what it'll cost them, they're just going to cost them twice it'll cost them, for losing the product they'll cost them for the postage back, you get it for nothing, and it will teach them, because they want to change it, they want to tell it's non-adjustable, but they ain't listening, so you can get yourself a freebie, it may not be, I don't know, I don't think that's going to stop you from getting into heaven, I don't think that's what people are going to get judged for, to get judged, anyway, I would buy another one, but I have been asking, I've asked about six or seven of them, some of them get a little bit snotty when they say, just read the description, oh I didn't take it up in volts, yeah I did, yeah I did, yeah I did, but we can't really take it up too high with that load on, I can turn it back off, but I'll have to take this load off, and just show you that it can go up to like 30 volts, so it's like, this is the 12 volt input of course, look it's on 19 volts now, and use this one for turning it up on the voltage, let's see what we get fully out of that, this is the 12 volt input coming from this, so you've got 28.3 with no load, all right, there's no load on it, oh I've probably turned it up perhaps, I don't know, I can make a difference, now there's one here as well, this is voltage under voltage, and it's not to do with charging the batteries, I don't know, but look, see this, now I've turned the under voltage thing up a bit, and now this light error lights come on, I'm not fully understanding what this is all about, because that ones still are good, it's still happy with that little blue light, but with this little, it says error on this light, it's all that's all about, I don't know, but so if I turn that up, you know, it goes up, and then if I turn it all the way down, and see what I get till it clicks now, I don't think this one's a clicky one, okay, yeah so I'm not exactly sure what that's all about, so I can't tell you what that's all about, there's still one volt to there, like I said, if you put a diode on the output, I suppose you'd have to adjust it, you know what your load's gonna be, and then put a diode there, another likely meter, of course, after the diode, these would be connected to the out, the other side of the diode, so you get the measurement on that side of the diode, not this side, or else you'll have to compensate every time for the value of the voltage drop of the diode, yeah, it didn't get too warm at all, so you know, I don't know what it'd be like without the overheat sink, and to be fair, the satin here, it's gonna help as well, it may not be compressed to it, but there's, you know, this is like a cold surface, so let's take to that as far as it'll go, yeah, so at 0.5, right about a volt, that's what it says on the spec, is a volt, didn't really notice that, but I just wanted to see what it was like anyway, still see it can come in handy, quite a few things, got a constant voltage, constant current, and this is to do solar charging, but I won't use that, because I've already got the control for that sort of thing, yeah, not bad, it works, came through, it's not bad, works using this, to give it power, like so you go down the voltage, and you can go up the voltage on this, so it's a booster and, but convert the name of it and stuff, it'll be in the description, I'll put a link in the description for the one that I've got, because it's the cheapest one I could find, and for going after the bargains, you know, honestly I'll find them, even though, you know, if you look at this and go, that's £11.29, and neither one's really like just under a tenner, that's what some of them, not all of them, a lot more expensive, but they haven't got the big heatsink underneath, they've only got the two little ones here, and they are small, because when you see how small this unit is, and you look at the heatsinks on the thing, and they're sitting here, they're very small indeed, so they're not going to really, but they don't really get that warm, they bring that warm, you know, when we're pulling that amount of current 37 watts, power 37 watts, sorry, and it was sat on here, that wasn't getting the very warm one either, just get a little bit warm and warm, look at the fuse, pretty cool little fuse, I don't know if you can see that very well, because I can hardly see through the back of its camera, my eyes are shut, I need to get to the opticians. So here, so I suppose if you've just got like pretty much a dead short you can pull, you can pull it out, and let's see what happens, dead short at 0.8, 0.8, so that's another good thing as well, and so you can, you know, with a volt there, and you can short the output, and it doesn't just pop it or anything, because I just did that, I'll show you again, I hope you can see what this is, I've just been doing, so you can just short, that's a nice little feature isn't it, anyway, if, you know, this is not a bad little unit, yeah, as you saw it's got some, it's got some short circuit protection, there you can pull, just the way it is, quite happily draw 77 watts, without getting particularly warm at all, there's a little bit of warmth here, but nothing that you think, oh Jesus, you need bigger heatsink, nothing like that, you're quite happy to just leave a hand on there, just to add to this look, what I've done is I've put a couple of these diodes on, well, I'm on the right here, with this package marked correctly, these are 6A10s, and they should have a 0.62 millivolt voltage drop, 620 millivolt, I could have marked in the background, basically that's what it said on the bag there, that it could be marked up wrong, and now the difference now is if I, before I only got like a small load even, just shorting it out, there was, there was still voltage, and there was also, I'm really not being drawn, but the difference now, I've put those diodes on this, before I short that out, but we got nothing, and if I connect this load up again, this few hundred millio, this will show the same thing, it just drops to 0, so there you go, there's a way of getting 0, I don't know what it's doing, on the input side, power wise or anything like that, yet I've got to put a meter there, you can have a meter in and a meter out and see what the difference is and everything, but I think I'd like to have to take a meter out of the power supply that I'm always taking the transformer out of, or wait for another one to come through in a week or so, probably take the other power supply apart, but I just thought I'd add that little bit there, just to show you that if we do put a couple of those, I think they're about like six or seven ampoules of these diodes, they're my blocking diodes for, I think I must have been drunk because I owed way too many, and that's happened before when I've had a drink, I buy what I want and then forget that I bought them and buy them again from somewhere else, sorry, so yeah I just thought I'd add that, because it does a half a volt struts it down, maybe for a 10 up voltage, say 12 volts so I can see what happens in my way, for that short it down to five volts and four and a half amps, they don't trip out though, you can do anything, and it's a little blue light, it's the happy light, it's when the little red light comes on that's it's not happy for fire, it's just a gold foil, at the end of the day some of us are like, ah you're nutty, you're gonna blow it up though, this is how you find out maybe, it is gonna blow up, never know I've seen that, so we've got 27.4 now because we've got this, I've got it here too, it's no lag, I shouldn't have done more, let's see what happens now, it's shorted up, wow, so that actually drops it down lower, because remember when it was on 9 volt we've got four and a half volts at four and a half amps, but at 27.5, drops it all the way down to three volts, three amps, ha, amazing, and the fog lights on look, you see the red light, take that off, blue lights back again, blue light dims, red light comes on, not a problem on feet, of course that might be a problem, there you go, oh I reckon that's alright, I reckon that's gonna be useful, just gotta get these pots off and let's put wires in so I can put the ones on so I can put it inside the case, that's good, I'll get in this one, bye.