4 сағат бұрын
28 күн бұрын
Пікірлер
@catworld4654 3 сағат бұрын
Thank you Mr,There are few people who give their experience for free, and this is priceless
@Dutch_off_grid_homesteading 5 сағат бұрын
Heya, nice callab you too and nice review thanks
@strayblackcatsmeow 5 сағат бұрын
Bought one of these. NCV is not sensitive to be reliable. The other features work well.
@MAKE-755-DAILY 5 сағат бұрын
This is precisely what I've been seeking! A wealth of wisdom! ° "Challenges are the stepping stones to self°discovery."
@John_Smith__ 5 сағат бұрын
Many years ago I was also skeptic about the K-Type (knife edge) solder tips a...but after some practice they have become my Favorite for qfp soldering or any other external pins. .. they are very very good specially at removing bridges. One has to simply practice and develop the technique. Good soldering iron tho.
@LearnElectronicsRepair 4 сағат бұрын
And this is what I was trying to say in this video. You get used to (or learn how to) use a particular tool well and that becomes your preference.
@John_Smith__ 4 сағат бұрын
@@LearnElectronicsRepair Exactly and more importantly ... we use the tools that we can control Better! As long as the solder job is well done it does not matter what tool was used on the process!
@perkulant4629 6 сағат бұрын
Full package for 51 quid. Seems like a good deal. Cheers for the video Rich!
@pauldery7875 7 сағат бұрын
I've already decided, I'm retiring this month, and will be visiting the islands. Absolutely beautiful, Paul USA
@zeno2712 7 сағат бұрын
The scrolling numbers are really annoying!
@andygardiner6526 7 сағат бұрын
Be interesting to put the supply on a load and see whether it's doing what it says on the label ...
@GregM 9 сағат бұрын
Whenever I get soldering tips for my KSER iron I calibrate the new tips. Maybe it is me being anal but I have had tips which had huge overshoots temperature wise so much so that the seller replaced the new tip.
@andymouse 9 сағат бұрын
My TS100 has had a lot of use and if I had to replace it I think this is the best I've seen so far....cheers.
@andymouse 10 сағат бұрын
Never used a bendy one either but I have a feeling that they would be really good, might have to get one.....cheers.
@LearnElectronicsRepair 4 сағат бұрын
I was a bit surprised by that too. Give it a go see what you think
@Tims_Projects 10 сағат бұрын
I Love it, thanks for showing. I do like the boost, for those copper rich areas and things like pin headers.
@TheElectronicDilettante 12 сағат бұрын
Need to keep the tip clean and tinned. You can loose 25degF to that heavy oxide layer that forms. With a fresh tinned tip, keep a drop of liquid solder on the tip to transfer heat into component. It’s easily seen with thermal imaging. Also, those tips don’t have enough thermal mass to do any significant desoldering.
@DrFiero 12 сағат бұрын
Just went poking around looking for one. Seems you have the HS-02a there, there's also an HS-02b. Might want to update your video title to add the 'A' anyhow!
@maebeans 2 сағат бұрын
the difference between them is that the b version uses c210 tips and the a version uses c245 tips
@DrFiero 2 сағат бұрын
@@maebeans - thanks! totally missed that. I'll edit the above.
@mdcd4656 14 сағат бұрын
Yes is nice, but I have two of hf-01, why I must buy this model? Thanks for presentation, but I prefer the hf-01 tip (more slim).
@LearnElectronicsRepair 4 сағат бұрын
There is no 'must buy' I just test stuff out and give my honest opinion on how it performs. After that it is up to you.
@tbangblack4515 14 сағат бұрын
It's compatible with jbc tips check SDG electronics channel
@pault6533 14 сағат бұрын
It would be nice to see the display is reading while you are soldering. Could you put a small camera on the end and do PIP in your video? Sort of like a guitar neck camera 😊. Thanks Richard!
@LearnElectronicsRepair 4 сағат бұрын
Can I ask why you wan to see what this display is reading? Either it dies the job well or it doesn't yeah?
@Fourty_7 15 сағат бұрын
I love the analogy with the car on the hill 😁 thanks richard
@whkiess 15 сағат бұрын
Can't thank you enough for this information. I'm new to scope usage and wasn't aware of this issue other than the next to useless chinglish user manual. Now I know and better still, have a way around the issue.
@oefzdegoeggl 15 сағат бұрын
Well. Just power the board (not: the scope) through an isolation transformer and you can hook your scope up where you want as there's no current path existing through the scope then. Also, that makes touching things on the board safer (like heatsinks).
@Lightrunner. 16 сағат бұрын
Nice tool for beginners and outside emplyees.👍👍👍 But .... i love my Weller double Station.😍😍😍
@mikebond6328 16 сағат бұрын
That’s nice. I use a pinecil v1 that seems to heat a little faster but the hs02 has nice features that outweigh the few seconds gained. It’s a good deal too.
@originalmianos 16 сағат бұрын
Kinda odd it looks and smells like a jbc 245, but isn't compatible. A shame.
@LarixusSnydes 15 сағат бұрын
Yes indeed. What I like about this iron: 1. Comes with a cap. 2. Clear screen. 3. very nice cable. 4 Enough thermal mass to cope with ground plane (de)soldering. 5. 3 buttons instead of the usual 2, which makes for a more convenient UI. What I don't like: 1. No grounding point. 2. Not compatible with the JBC-245 tips. I chose a Sequre S60P instead, because it's compatible with JBC-210 tips and has a grounding point. I may eventually buy a Sequre S99 or a similar iron that takes JBC-245 tips, because they have better thermal mass than the 210 tips and the range of available JBC 245-tips is huge.
@paulb9769 17 сағат бұрын
It is like a fancier Pinecil.
@maebeans 18 сағат бұрын
yes yes yes i've been waiting for this
@dalepres1 23 сағат бұрын
I'm retired but I spent many years in electronic repair from before hot-air workstations were even a thing through the introduction of leadless, Small outline, and other component miniaturization. But I still learned a lot of great ideas in this video. Even as an expert, having done this kind of work for many years, in retirement I have thrown away a lot of electronics that could have been fixed. So, along with desoldering tips, what I learned most from this video is perseverance and thinking a problem through, and to not let it whip you. As I set up now as a hobbyist, I hope I can be as determined as you are in this video and don't take failure as an option.
@jonathanrose456 Күн бұрын
❤
@bluewinds10 Күн бұрын
Would it really matter using hot ground if you were using a handheld scope, especially an Owon with plastic covered BNCs?
@niallrobinson9225 Күн бұрын
You often say you are not an engineer. I work in an office full of electronics 'engineers'...you would put most to shame with your knowledge. Great videos 👍
@warwickbunn1250 Күн бұрын
Brilliant Brilliant Brilliant. What a great explanation so even I understood 😜 The combination of the 2 of you gives a great dialogue as you agree or disagree or correct eithers knowledge. And the practical use of Carlos's @RetroUpgrade oscilloscope without editing shows what its really like to use. Not so easy if the tester is a wiz with the tech while us beginners are pressing buttons and twisting knobs in the vague hope we might work it out 😅 Read the manual ? 🤔🤣
@bofor3948 Күн бұрын
I 'm old school and still using an analogue scope, but of course this problem is still an issue. I also use an old school method to to prevent shocks and damage to equipment. An Isolation transformer. A 1:1 ratio mains transformer with the ground removed from the output side. You plug the DUT into the isolated output and you can now connect your scope safely as there is no path back to earth via the neutral of the DUT.
@CliveTrezona Күн бұрын
Hi Richard. Thanks for this very informative video. You should have also mentioned how all this ties into the use of the isolation transformer. You dont really need to worry about hot ground then?
@cnfcomps Күн бұрын
Fantastic video - thanks very much for sharing your knowledge!
@humidbeing Күн бұрын
The bandwidth rating of a scope isn't the max frequency it can measure. Waveforms are made up of components of different frequencies put together. Square waves are very high bandwidth, for example, as they are constructed from a basically infinite amount of sinusoids. So a 100MHz scope may only be able to accurately recreate a 10MHz square wave.
@markweiss5152 2 күн бұрын
According to U.S.National Electrical code, All circuits must have ground as part of the circuit. This is done usually by tying one of the current carrying conductors to ground, the white neutral wire. Your mains neutral wire is tied to ground in the breaker box. Most countries use the U.S.National Electrical code, some with slight modification.
@peddersoldchap 2 күн бұрын
Hello Richard, can you tell us the URL for the arduino function generator, please?
@andymouse 2 күн бұрын
The AC tutorial was very nice lad's ...cheers
@jackgrey3340 2 күн бұрын
This video is very helpful. I think every budding tinkerer should see it, because safety is always a priority. Thank you for the good work 👍
@LearnElectronicsRepair 2 күн бұрын
Exactly 🙂
@TheElectronicDilettante 2 күн бұрын
The waveforms aren’t out of phase they look to be set to different scaling( bottom left corner of the display)
@LearnElectronicsRepair 2 күн бұрын
It's Carlos' scope so I leave it to him to set it up properly 😅
@andygardiner6526 2 күн бұрын
One thing to note if you are working with mains is that some of the cheap digi scopes only have a 25V maximum signal input. Using a 10x probe will work to 250V *but* the probe must be 250V rated ... Old CRTs could have input channels that would deal with 500V so it wasn't so much of an issue.
@andygardiner6526 2 күн бұрын
I can assure you that half mains shocks hurt too! :-)
@andrewreed7101 2 күн бұрын
Your killing is with ads
@LearnElectronicsRepair 2 күн бұрын
How many ads do you see in this video? It seems to vary from person to person. KZbin place the ads I don't have any control over that
@RectifiedMetals 2 күн бұрын
Holding your probe near the transformer shows it’s working. How does it help you when the power supply isn’t working? No point in troubleshooting a working psu. I only ask because I have a ucc2800 that will not start switching for anything. This psu has thrown me for a real loop.
@LearnElectronicsRepair 2 күн бұрын
It helps you narrow down the fault because you know if the switching IC/Mosfet is running or not. Regards your UCC2800 based power supply. I would start by looking what is happening on Vcc (pin 7) most likely this IC uses one or more high value resistors in series which connect from HT+ ~320V from the main smoothing capacitor and these charge an electrolytic capacitor connected from pin 7 to hot ground. There could be a zener diode here too. This gives the initial voltage supply to start the UCC2800 oscillating. Then there will be an auxiliary secondary winding on the SMPS transformer which generates the voltage to keep the UCC2800 running. This will be on the high voltage side of the power supply and connect via a diode and possibly a resistor back to the electrolytic capacitor on pin 7 UCC2800. If the staryt up high value resistors are open circuit the UCC2800 can't start. If it starts but the aux supply does not come up due to some fault condition , or the electrolytic capacitor/zener diode on pin 7 is faulty, the voltage on pin 7 will drop quickly and it will stop running. Depending on the type of IC it will then either shut down until you remove mains power and reapply it, or it will continually try to start sometimes making a chirping sound. I hope that helps
@warwickbunn1250 Күн бұрын
Eureka ! I am starting to remember some of that circuit from your numerous wonderful drawings, so I can actually follow what you are saying, mainly 😅 Thanks Richard.
@featurelessrecordings9588 2 күн бұрын
Where's part 3...Was it fixed..??
@Bonksticker 2 күн бұрын
Wonderfull full bridge explenation It is easy to make a usb cable....with shield only conected on one side..in this case the computer.The data will be fine
@chantalslut 2 күн бұрын
Remeber back in the 80's when we had to build a simple powersupply at school. Some guys didn't get it to work, and yes, they connected the hot ground to neutral. Every lessons there where a few good bangs!
@Blinkerd00d 2 күн бұрын
Next lesson can be on digital ground v. analog ground v. signal ground lol learn all the grounds!
@Lightrunner. 2 күн бұрын
Important topic👍👍 30:52 Attention Richard, it is important which power network is installed on site. There are three basic forms: TN system, TT system and IT system as well as the following versions of the TN system: TN-S, TN-C and TN-C-S systems . Did you know which system you have?.
@LearnElectronicsRepair 2 күн бұрын
Actually I have a 240V:240V 2KVA Isolation transformer that powers any device I'm working on. This way I can connect any grounded test equipment to it wherever I like including on hot ground, but I didn't mention this in the video. All my test equipment is ground isolated because it is either hand held or powered from a wall wart or USB-C type power supply, apart from my Analog scope, my PC which I sometimes use as an audio source and my Rigol scope. My bench power supplies are also ground isolated (though I can set them to grounded if I so wish)
@Lightrunner. 2 күн бұрын
@LearnElectronicsRepair ,,, the problem is, didn't have you a two isolated transformer. Leak currents from the PLC could destroy the device being repaired (experience 😭). But, I don't think this is the case with the subwoofer. Perhaps the error lies in the supply voltage of the AD-DA converter or possibly in the PWM stage. Unbalanced sine at the output without load / input signal. Maybe i'am wrong too, 😔
@peterstewart4559 2 күн бұрын
I’m from Grenada in the Caribbean. thanks that was some great explanation Man.Would love to see more amplifier repair videos