 Hello everybody, welcome back to my channel Now this is just a quick continuation of yesterday, and I just wanted to show that One that I didn't kill this device when it went into our lunch and just overheated to about 86 degrees I believe it would have been hotter if I got the probe on that straight away Now nothing's changed on this circuit The other thing I've done is tried to just get this probe tip to sit in the back of the heatsink here So you can keep an arm that on this meter at the back. It's currently 21 degrees in here So the best area for this working is 25C Tops otherwise just start losing its capabilities now I'm gonna tell you a bit of shortfall of a circuit like this is One if we are now putting in let's say up to 17 volts Let's reduce that down to about sort of 14 and a half volts into this When we take away, you know what we're losing on the diode We're losing here because it needs to have some power and some some voltage to actually work When when we take that away and we have got five volts coming out and we've got 14 volts going in that means we've got nine volts and If we are pulling one amp through this We've got to calculate our nine volts being lost across is that we're trying to get rid of to have five volts out At one amp is nine watts. So this thing is going to be heating up from the get-go Nine watts of power and that's going to go warmer warmer and warmer So really you'd probably want to transform a little bit less power on it or have this running something like a nine-volt Device here instead of this LM 7805 Well, what I wanted to actually show you is if I now put on using that same capacity difference change But I've just adjusted this to pretty much one amp to show you what the signal looks like over here And as you can see, it's ghastly and we've got one up there around 445 So I'm just going to tap that out straight away and all I want to show you is that we can go a step further And just put in now This is just what's on the bench at the moment and I've got a 200 2200 micro farads capacity and sure and then we get these things the right way round of course Was they are polarity the polaritise and then want to be in the right polarity. So now I'm going to put this back down again we can We can see as that's going up. I mean, we're very hot over here Did you see what this? This is saying here, but we got a nice Couldn't we've got a nice Straight line there, which means it's nice and clean. It's very hot on this side. It's probably not showing this very well just because It takes a bit for me to get it onto this. Oh, that's not very good Itself I think Not quite sure what's going on But for some reason why that's going that's putting up a right hole first. Did you notice that? Let me just put that down again and look at the look of the meat a lot Take that off again Now that's strange behavior But I suppose that could be because I've got these plugged in like a silly Billy and Really, I should just be having one thing plugged in when I'm doing this. Let's just see if that makes this any Any easier to read if I just put that on there And we are T1 so we just want to switch this over to T2 there we go 55 C My mistake by leaving those in I'm sure let's just see what happens when I put that down Yeah, that's a lot happier And we're at 54 and you can see oh How that is rising? That just goes to show how quickly things get warmer and warmer and warmer And of course we know that once it gets all into the 80s It tends to shut out at least over that 80, but that's all we're going to do for now I just wanted to show you that if you put a bigger reservoir capacitor on again You're gonna get a better signal, especially when it's running to its absolute maximum This is maximum one watt and that is normally at 25 C and of course the The problem with running a linear type Voltage regulator is whatever the voltage it is the difference Times by whatever current you're putting through and that's the wattage you're gonna have to be dissipating out of this thing At all times at that current Okay, right. Thanks for watching and I'll catch you in the next one