 okay guys well I can't believe I can make such a mess in such a short period of time but I've already done it. Made the mess and what I want to do is this is a sandwich container, I don't know if I've done it with a lid or something. This is my little LM388, no no no, 338, I keep saying 388. What do I add to the incointer? Look, it's got a 10 pot turn, 10 turn pot for the voltage. It's got a nice 200 ohm to adjust the current pot there. Now I don't know if I haven't done it for the minute because I was going to give it a power light but I'm not sure if the camera is looking at what I'm looking at. I was going to give it a power light and have a little hole just in there that a red LED or a green LED effect quite nicely into a 3mm. But then I thought well I could but it's not really necessary because I got this but maybe I could put it there anyway and put it across the outputs and then I know I've actually got output to there and if that light doesn't come on yeah I'll do that. So get a quick look at what I've done here. I'm going to tidy this table up in a moment and then we'll look at this again with the tidy table. Now this is actually hanging from this squirrel here and that I turned into, oh I'm trying to rub all of this down here. That I turned into this. And I was so proud of myself when I had a video and shared it on YouTube and then I thought well it's actually quite practical. You know if I could build everything on my bench I would build it. So a bit by bit. But I thought it was quite practical. Now I don't expect to get heavy loads out of this. I don't want to do that. There's certainly little circuits that just need that little tiny bit. But for me it's quite important to be able to have current control and it's quite important to be able to see that. Which is why I love that power supply so much. Because I can get that from that and that's great. But as I've said before that's 25 watts of power just to sit with the lights on. You know just on standby 25 watts of power. That's a lot of energy. But this better be on the other hand. This is basic and it's simple. Quick going over here. So anyway I say that's this and this is that. And that's this. It is sort of. What I did was I wanted it either way round. So oops. I wanted it either way round. Because of where I put the volume control. That being the voltage of course. And the current. It was out of sync. So basically there's just the opposite of your own. So when you look at this. This is here. This is here. Yeah. One here. So that there. That there. Boom boom boom boom. That was a bit of a bloody brain teaser. I'll tell you. Especially worrying about this plumbing thing as well. Just a little bit of brain teaser. Because that became useless to me. Because I couldn't understand the engine. The 220M should be there really. And this should be down here coming down to ground. I don't know why I did that like that. But it really messed me up looking at it. So I just resorted to this. Because I could see it a lot easier what I'd done. And where it was. Well. Through the front. You get to see the capacitor in there. You know it's not really through the front. It's a bit of a mess to be fair. That's where all the earths are joined together. And then there's a diode. I'll tell you what I haven't done. I'll have to do modifications on this. And that's what I built it for. To do easy modifications. Have you seen here? Look they're not even screwed in. This is that glob stuff that holds your capacitors in place. I just sat it like that. Put them down. There's some thermal paste between the isolation. And I've checked it for isolation of course. It's isolated. Between each other. But there's some thermal paste on the other side of the isolation. On the heat sink. And then there's some thermal paste on this side of the isolation. To the back of the regulator there. The same as on there. But it does mean you know if they go. I don't have to try and get in here with a screwdriver. I can just cut myself. Take a lot of put another blob on there. And we're good to go again. Not a problem. Input. I'll tell you what that was like in a minute. We're going to refuse. There's a 5 amp in there in a minute. I'm going to check that 2 amp in. I really don't want to be drawing any more than that through this. Don't need it. It's going to be milliamps. It's going to be playing around with LEDs. It's going to be playing around with little circuits. It's going to be just playing around with little stuff. And I've got my little LED ready there. And I'll just put a resistor on that. And chuck that between the output currents. I've just got to calculate the resistor a little bit I think. Because I'm not going to be able to go up to 57 volts with this. And not with those chips. But I've got some HV versions of the 317. And I'm 317. So I might be able to do it with that. Right, so we've got the power coming in. Of course. And then I did this little bank of 63 volts. And 120 nm of capacitors. It was the most appropriate ones I had basically for voltage. Because I've got to be able to... I know I'm going to be running lots of my battery. But I'm going to be able to put a boost inverter in line with it too. From a battery to take it up. So I've got to be able to make sure up here if I need it. Rather than just the gate and a half bolts type of thing. That I'm going to get from using the battery. I've got to be able to regulate this. It'll be the whole power here. And I'm still probably might have to do some work on the output. Because that's what there is for the output. I've just concentrated on the input there. And I'm going to see what the difference is on this. Now this I can take out easily. It's blue tacked down. Or it's not blue tacked. It's a different name. Different brand name. But it's the same sort of thing. Wacky tack or something like that. I don't know what it's called. But it means I can get at it. And I can put output capacitors on here if I want to run output. Or I can put another board here. Output capacitors there. But we're going to see how this thing rolls. And I'm going to do some low test type things. See what the noise is like. And switch with them without the boost converter. And maybe even without the capacitors. Yeah, so let's power it up. Let me use my trusty power supply over here. So I can limit current and everything of course. Now I'm not going to light here. I have powered it already. I powered it and I found that I got this. Because what I did is I put my meter on here. And I found that I got full variation of the 10K. So I thought that's where it went. I had the PC here. I had the black wire here on this. I thought it should be in the middle on the wiper. But for some reason it was coming out of the meter. So I did it anyway. I powered it. And I didn't have... I just had a full output. Basically a couple of few volts underneath what the input was. So I changed that over. Hoping fingers crossed it was going to be an easy fix. Put it across there. Sweet as. And it works well. Sorry. Like I say, I'm not a little light here. I have powered it. I know it works. I'm just going to set this down. I'll pop you in there for a second. Just have a look at the wires. I just can't do this powering. Ah, come here. I might just skip through this bit. Why am I not getting in there? There we go. So, yeah. And the nice thing about it of course is it's got a bit of... It's got a nice bit of heat sink on the back. Heat sinker. And I'm going to put this three amp fuse in it. I suppose I could do that now. I think I've lost it already. I think that is a two amp actually. Not three. I wanted some threes but you've got two. That'll do. So I don't have time to run any more than that. And really if... It's just a little bit of extra. A little bit of protection. I haven't put a diode across the... I need to look at that. I said I don't want anything going back through and doing anything dodgy. I'm going to look at that studying. Just to see if we're okay like that for the minute. But for the minute it's going to be fine. So I'm just going to give it a little power up. Now I've got this thing over here set to 20 volts. And I'm actually just going to just power that on. So... I'm going to turn it to that. I'm not going to tell you what it says. You can see what it says. That's the minimal voltage. And now I'm going to start turning that up. Just going to see. We're going up. I haven't got any knobs for these. The one that came with this 10.10 was hideous. It just turns around anyway. I don't know what it is. These things I haven't got any... They're not like the normal potentiometers where you've got a knob on there because it's got the spliney type thing. It's haven't got that. I don't know how this works. As you can see I've got the variable. Up there. Which is all good. So what do I get? Just under 18 volts. And according to my power supply I'm drawing that amount. As you can see. Do you get that? Okay. So let's just back this down a little bit. I've already... Well I just did that many ago. Hopefully I didn't turn it. It's quite stiff. This is the term. Probably a good thing. But I've got it set to 10 milliamp. For the output. So let's... Push that back. Put that down there. It's really strange how that looks. Let's just put that down. Get some leads and we can plug in... I'm plugging in... A 10 watt. Of course these blades are going to work the same as them. But that's the right output. This is one of the things I really need to remember. Is that this thing is on. It's output there. I don't have like an output switch. Which really I might just put myself on. Because I don't need... Any real electronics for that. I can just have a switch. Can I just have a toggle switch? I've got some big ass toggle switches. I thought they were a lot smaller. But they turned out to be really big. I don't really want to use that. I'll just push some formers in. Push that former in there. Put all that down. Put this out of the way. And we'll start winding up the old power. I will have something to put over the front. Of that. As soon as we get to 10. 10 million. I'm pretty sure. It shouldn't be going too high. I think I might have just turned it slightly. I don't know. The first one I had in there. Oh no, I didn't. That's it. That's full. I don't know. I thought we had like 98 volts. Because I can turn that up. I just turned up the current allowance. And we're up. That's full. So the way that's set. I'm drawing 58 milliamps over here. I'm currently limited anyway to 100 milliamps. I don't know if you can see the current limit. Down at the bottom there. I think I have to actually give this a little white. Can you take a look at that? It's currently limited to 100 milliamps. Yeah, I'm just doing a little walk test around the place. Seems okay. And these are going to be the central little things. I don't know if we want them to do with it. Just checking that it's not actually getting warm or underdoing sort of damage. Nah, that just looks a bit sucky. Start back on again. I think that's the nice thing about it. I've got a lid. There's still a snap down in place. It's nice. It's not on top of a monitor. Yeah, pretty chipped. Got myself a nice little current controlled inch power supply. Just, you know, it's not going to be anything too bright or anything. But no, what I want to be able to do now is, of course, is stick the boost converter from the battery, the boost converter to this. So then I'm directly running from the battery. No more of a... See that like that now? Just sat there and doing nothing. 25 watts. 25 watts. If I put my watt meter, you know, plug it in. It's 25 watts and I can see it by the watt meter that I've got on the other side of the room where the main bench power comes in. And I can see exactly what I'm drawing. So, let's show some watts. And I'm going to connect the top. So I'll be back in a minute or part two.