 Hey there guys So part two of the Do it yourself Positive and negative power supply. I have changed the transformer Because the difference between the inputs and outputs will be too high and so this is a 12 volt output transformer But of course once it goes to DC You got to do that peak thing So we're getting more than 12 volts to the regulators I've got both Both channels of the transformer on the go so I've got 12 volts zero and 12 Here is the power supply That's the Pastors for the supply to smooth out that ripple And then from there we got our regulators The top one is the positive regulator the lower one is the negative regulator both to our volts The one at the bottom comes from bright components and Is near enough bang on to our volts lovely and stable the one at the top comes from China a whole bunch of them And that is about 2.3 volts I Moved away a little bit from the circuit diagram that I was working working with if you saw the other video the part one of this because I started building it and I didn't have any negative regulators But the circuit diagram is quite different And at the input still pretty much the same, you know coming from a transformer I've not got a I've not got a switch and a fuse on this because my switch is this There we go. Oh, sorry. Here's the switch That will be on push down and that's all and there's a fuse built into this so Everything's okay like that. So that's on now. I've gone for very small capacitors on the output Because these regulators are pretty good anyway from what I understand for the ripple side of things I Looked at the data sheet and it suggested two diodes the way I've got them in here I don't think you can see down there. I hope you can two diodes and And it works it looks okay now I've rebuilt the LM 18 75 And I rebuilt it so it's a positive and negative input, of course Because that's what that was all about And the blue wire is a negative input the orange wire is a positive input and this yellow wire here is the zero now I'm a little bit confused on how to separate up completely the signal from the power supply ground So I've got it in this configuration for now It will be lovely that rather than just be left the thumbs down for getting this wrong If somebody would actually leave a thumbs down by all means it's your you know your opinion and your valid It's valid to use but put if you can Well, how it should be corrected that would be great because Thumbs up thumbs downs are all great, but it's really good, especially if it's a negative thing that if there's a natural Explanation of why? Because that helps me learn and I'd much more appreciate that And without it because that's what I'm trying to do yesterday. I was one year in Into this game And although, you know, I'm not a professional or Have any real prior experience and I didn't do very well academically at school because I didn't go to an academic school, I didn't My school was probably very different to I pretty much say everybody that's into this sort of thing my school We're doing very much different. I Have made some changes to the Components that I've used because I didn't have all the components at the data sheet required So this input capacitor, oh my camera really doesn't like The loan the low light And I know that it's the camera this is a live live cam it's a Microsoft HD 3000 thing And I know it's that because I've got another camera. It doesn't do that But unfortunately it's got this horrible hits on the on the mic and You have to put the mic into the back of the computer and the computer's all the way over there And this one was everything from the USB so I can't use it, but it doesn't have the part where as soon as I start cutting out the light You start having a bit of a problem look like that. Maybe see it freeze It's terrible if you have a black surface. It just doesn't want to play at all But anyway, that's not the point what we're doing here so I've had to make a few little differences and I Can make One difference on the output and that will be to get rid of the film capacitor. That's at the minute On the output which would be You'll get it right. I think it's over this one here or it's this one here Maybe I put this screen on here actually I've got the data sheets on then I can I can see for myself So for is the output For is going to be at the back here and here's my output here And so it's this film capacitor here. Oh this one here so I could put an electrolytic there and have a better base response but with most of these things it's always the proof is in the pudding and Not everybody has the same Audio taste what they want to hear so what I'm going to do now is I'm just going to put on this little I Did have the radio going on this and it's like anything else when it comes to hi-fi You only get in you only get out what you put in So if you put a crap sourcing you're going to get Crap out and if you've got a good amplifier and speakers You're just going to be able to hear that through a good amplifier and speakers, but it's still going to be rubbish. I Can't provide the greatest Inputs because this is all I got to work with One channel is actually broken on this. So I've already got the left channel It doesn't really matter, but I'm gonna tell you it's connected to the right speaker Which is over here, and this is just a satellite mission speaker. It's not the greatest It's certainly not got the base greatest base response run it's not that it's not supposed to have It wouldn't be my first choice of speakers, but as the pair and cost me 16 pounds It was just a bargain to have up here and if I pop them It's not gonna make me it's not gonna make me upset so Let's have a little see what this sounds like The music let me just say start off with the music here or everything on you're gonna do for a few seconds through This is all open source music Okay, there's no I'm not gonna get any copyright problems or anything like that So Google if you're listening It's all open source, and I will put every artist and this and the song name like this one's called raindrops and it's by Alaska and if this camera was any good it would focus on that but It's supposed to be on there I don't know on the screen or something just looking at me, but here we go Now what I look for I look for I look for the the high volume Friendly sort of clipping or anything like this and with this set up 24 volts in total plus minus 12 It's not even pushing this That's all really And even with it on full blast I can get this to warm up, but it doesn't work very much I can get out to get a lot hotter if I use the signal generator that I've got in here And I start pushing through high frequencies But we're not gonna do that says there's no point So Okay, what I want to do is give you a little bit of this music may not be to some people's taste. It's not supposed to be Your specific music Well, I'm listening for his hits Any sort of crackles any type of hum that you may get from You're gonna remember look Direct to the mains of a transformer redirect fire Pastors I think I've used my filtering capacitors quite well And I must remind us always only one channel. We've already got one channel working and from here This sounds pretty funky. I built another another Another amplifier, which I really like the sound of and it uses a lot more components a lot more to set up in this I couldn't believe actually how easy this was to set up. I Did the single supply first and that turned out to be 14 components and this is 11 components So we've got three component difference And this is actually easier to set up the only difference was like to build a power supply to get it to work But I love doing it That was loud as this will go that's full blast on my on the simple One channel I have no idea how that's being picked up by this microphone But from where I sit it sounds pleasant enough to me What do I say in my opinion and that this that I could close my eyes and hear every Individual instruments and think that it's live being played around me No But then I don't expect to I know This is If that were the case where would be the point in looking through what hi-fi or going to a proper Audio file shop and looking at a source for a thousand pounds when you could get the same thing generated from a hundred pound phone With the built-in music player It just wouldn't be wouldn't be worth it would it them shops would probably need to shut down because Does it sound nice enough with these little tiny speakers? Yeah, it does and you know I've sat in rooms with big floor standing speakers with the stereo's like 15,000 pound and I know the difference in the sound But I'm not expecting it from this But what I do like to hear is that there's no hiss. There's no harm There's no music going through it. Now when I can't hear anything on the speakers That's nice. And there's another thing as well one of the tracks I have on here That's not it one of the tracks I have on here That's because this this phone has got a system in it which records some of my calls. I think it's this Well, that was a bit loud was I'm sorry about that if anybody's got their headphones in there's an actual track on this phone that's Very good because it's got the sound of the C And I can't seem to control this phone anymore It's not that Try to see I think that's it. I think it's this. No, it's not We're gonna be getting closer there. Here we go now this When I played it through the other amplifier that I built I could hear another hiss. I expect to hear the sound of the C I could hear another hiss but what I found on the other amplifier as well is when I turned it down When I turn it down to this sort of volume. I could be that the hiss was emphasized Okay, and it's also nice that when you turn this down to a really quiet volume You still have the the bass You don't lose any of anything It's everything is still there now. I love this tune. I Love this tune even though my background would suggest I'd probably be into more Street Rave music or whatever This I love this song music It's got depth it's got Soul I love Motown. I love all the soul stuff because it's got depth But I don't hear any hiss Me enough to turn it up Anyway, so there we go The 1875 Even though it's not a genuine a genuine one. It's nice from China chances are It's not going to be in what I understand about the dyes and these is either not enough dye or it's cheaper Where we should I said today in a moment or two? So I've just pressed stop on this recording. Oh my god. Look how long it is I'm gonna order myself two genuine ones and I'm gonna build myself This little lamp and I'll build it up again the other side here Play around with it And then probably build this onto a little board Because it does sound quite nice But that'll be a whole new thing for me building onto boards Because it's very easy like this to make a mistake and change it even though to be fair I would say this and we're on this If you think this is complicated, it's not I've managed to put these together Pretty much having them go in first go And that's been great and this hasn't been particularly difficult either And that all seems to work pretty well as well, but it's it's only using part the power what this can say That's not even warm. It's not cold cold as in metal cold This but it's not warm As in anything that you want to think through several there's a bit of a problem, but then again, it's not really been running has it I'd have to leave it running for a good while I would think But I'm not a professional on this. I am still very very much in office. It's my first year and day one of the second year today But I'm quite happy with this. I'm quite happy with what I've done with this so far And why I'm gonna do as well as I'm gonna I'm gonna play around with this This here and I might just add that on to the end and just see if there is much or any difference really What's we've really put an electrolytic on there something with a bit more? You know something with a bit more storage Maybe not as big as that if I were to put bigger capacitors on here I would need to put some sort of protection for the regulators just so Hmm You know just so that juice in the capacitors got somewhere to go to and it doesn't try and kick in the doors of the outputs Because that's not a very good thing Not very good thing at all And I might actually get myself another regulator from bright components These are made in Morocco these regulators But like I say this is bang on 12 volts pretty much given a few millivolts where this one's like 300 millivolts out And that's cheap from China But still good because you can get a whole bunch of them like a pound including shipping and if you break one don't really matter so much You know and that's the whole thing about this isn't it experimenting breaking stuff experimenting and getting stuff right by trial and error If you have to if that's the way you gotta do it and that's the way I have to do it So if you've got this far better place here just watching and Yeah, please if you do you know go for the thumbs down on the okay fair enough. That's your opinion, but Leave a message as to why Help me learn and make better So the next time you look at something that I do my thing. Yeah, man. That's good improvement And he's actually taking some advice. I've given him I'd like to be able to do that Catch you soon. Cheers guys. Bye