 I just wanted to add a few improvements I've made to this circuit, I'm not assuming that I've made improvements to the original circuit at all just to the one that I built I wanted what I didn't have was that both or now we've got four transistors but I wanted that they were sharing the power equally when there was about a volt difference between the two at one stage and also that the frequency was at 50 Hertz not 47 or 53 50 but for this country a couple of the resistors I didn't have so I've had to make those up to get the values that I've got I wrote them down yeah okay I'll write one down that's two point seven okay there I know I could put a two point I think I got two point sixes I'm not sure anyway and that's a two point four made up oh let me show you and this one's a two point four in total for the frequency I ended up with thirty nine thirty three and a twenty-seven nanofarad I'd like to just check that so that works out well 80 80 83 smaller than nanofarads and that gives me just what 50 Hertz no really I should have had that in but okay just like this you know put something somewhere not to wire up somewhere so those are frequency and that's the voltage and the load so there's votes peaked peaks that the frequency down there one lot at the top there there's the hardware counter there as well 50 Hertz point one point one Hertz and so I got the voltages you know pretty close it's quite good it's just under 220 volts without the load it's 219 it's all flickers 18 18 and 19 load but the nice thing about this is before when I was running it for a minute or so with the 840s it was getting hot and also better performance most definitely with IRF 3250s no 30 205s promise I've only got a couple of these and if won't you leave it on for a while these do start getting hot yeah okay heatsink come up but these I can leave these running before and they don't really get warm I've not left them running for more than sort of three or four minutes so maybe I should do that I don't know if I want to believe that but what I did was a little while ago I bought a bunch 30 I think it's 30 for 3 pound no second time as well the majority of the second and no they're not they're different but the majority of the second and like you can see that the leads have been cropped and they've been used but they still work which is great and no not even more and the ball was over there like just point of the wave going away and it's pretty bright because in here that's the only blight that's on though unless that is quite bright I'm gonna put the overhead light on I'm looking at the information are again still pretty stable everything's still pretty much main the same means and maxes and averages pretty good the frequency when I was playing around with different pastas the minimum on the frequency there is 40 40.6 Hertz but if you look at frequency now on the average that's pretty much sticking to what it should be which is quite good that's quite good for me anyway no it's still not warm yet not even warm cold I would say cold this is a gas top table so it can be pretty cold and they're pretty good so I say this works a lot better there's the voltage still with the load on now 12.5 volts point seven ounce for eight eight and a half watts I can't do that maxes in my head okay I can't hear that we can do it on account so it's all up over your 12.5 per tons point seven 8.75 watts let's just do a little feel yeah absolutely nothing there's nothing it feels like I'm just picking up one of these maybe it's got slats I once I felt that for a few seconds it's the same sort of temperature and that transformer there now that was making a noise before when it didn't have enough load on it so I'm wondering if it needs actually if it was to be happier putting more power and what I noticed as well when I was playing with them yesterday was because I was trying to simulate the battery and the lower it was going rapidly about there would be on like nearly an amp and I can see there look we're getting close to that but we are at nine volts we've gone down to a hundred volts there the frequencies stayed the same there's a bit more difference now on the the power going to them but as I turn it back up to 12.5 volts which is where you where your batteries you know they don't really want to run down very far from we go back up to that that's good and we'll start enough with a fresh battery that's a 12.89 there's still pretty good there and you'll have probably about a hundred 230 maybe volts open circuit and 196 there it's still going so let's have a little look and feel what that's like yeah nothing just nothing nothing nothing nothing they're a good bike for this because I don't know how long that's been now we've got nine minutes 35 on the camera I think I started it probably about four minutes five minutes ago there's a little bit I'll skip through just what I can figure out the capacitance that's a 13.6 pretty much on both there is a slight difference on the maximum there 15 and 14.6 frequencies still staying pretty good on both sides of the inverted non inverted then just nothing there's just no temperature change that's all it's just cold it's one of these no temperature change so I think the IRF 630 then that's pretty good so I'm quite chuffed to that I'm gonna look at building a H-Risch with that flash was it just me nothing seems to have changed anywhere that seems to be the same that's what I'm saying so I put we wouldn't probably be running at that he wants to be around about 2.5, 2.6 yeah nothing no change still cold so yeah I think that's not a bad not bad transistor to use and using four of course he's sharing the load a bit more I presume that's why the heat is just non-existent on it which would probably indicate that I could put more of a load on there we'll see what else we can get I wonder if I can get this to power up a fluorescent tube interesting all one of these are these compact lights yeah I just thought I'd show that except that seems quite good just been able to leave it running and then not get warm because that's still not warm at all no nothing certain this just running in a few watts it doesn't need really need heat sink in I'm sure it'll need heat sink in I don't know about these plastic cases there's that mean I don't need to put insulators on them and I can just bang it on the heat sink anyway I'm not sure I'll have to look that up because I don't know I've never used these before with the plastic cases like this so I've got to bag a bunch of them I'm just going second hand you know on eBay and I'm just like oh I'll grab those I wanted to play with MOSFETs this is before I even touch the MOSFET really I was just playing with the BJT the tip 35 I like MOSFETs okay it's not heat or anything to be worried about not even my temperature because it still feels a little bit cold but it feels a little bit warmer than what it was before but not enough to warrant thinking about or thinking that this needs to be turned off or anything I should probably do a temperature check on the power spline I'm just going to pour on the yeah nothing yeah nothing nothing nothing so I could just leave it running couldn't I could just leave it running and then maybe connect it to my battery but I did notice with the I think it was the IRF 840s as you were going down even just slightly the voltage the amperage was rising considerably which I don't think is such a good effect I'm not sure if that's what's wanted especially as if it was on a battery it's going to continue to deplete and then if it's taking more amperage it's going to deplete even quicker I don't think that's a very good move yeah I just thought I'd share that that is a better version of the one I did yesterday okay so I decided to add another bulb or something I tried to get this I tried to get this to work but it just blew a little bit dimly I've got better results from a single MOSFET a very much simpler design of that but it still wasn't really worth doing anything with because that design really isn't the way they go it's just a very basic thing with one MOSFET but there's there's two bulbs that's a three watt LED and that's a six watt LED there we go so I'm going to draw into the circuit anyway to have enough watts same thing I was just trying to see if these things would get warm not really it's not bad a little lightly if you're living on a boat or something there's pretty much the same a little bit of a bend on the waveform room but the voltage is the remaining stable the frequency is already stable but it is slightly down but I'm not sure whether that's worth being concerned about I gotta I gotta tear all this down now I'm a good one of these little DSO 138s for the friend anyway I should pop this in the video somewhere just so you can see the two bulbs you got this far cheers for watching I'm gonna probably just leave this on for a while still because there's still no nothing on there just nothing it's like they're not having to do any work at all and everything there is pretty much the same very small difference between the voltages but cheers guys bye