Why Your Need This Circuit !! Most Useful Tools for Every Home
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- Опубліковано 3 чер 2022
- Why Your Need This Circuit 🔥 Most Useful Tools for Every Home
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Wlecome To My Channel.[ Rj Edit All ]
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Your Need :
*Diode 4007-5408
*Rasistor 2.2k 1/2 - 2 Watt
*Capacitor 1000uf/35v
*Transformer 12-0-12v 3 amp
*Multimeter
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Rj Edit All - Наука та технологія
An interesting circuit combined with a DMM, I would also advise adding a bleeder resistor to the electrolytic capacitor. I am curious as why the primary leads were not soldered, just twisted and shrink wrap tubing slide over?
Because, I was using it for a short time, thank u ❤️
Let me tell what the hell is going on here. I'm EE Engg graduate let me know on atalpatal is this?
@@mtcemngr5292 EE engineer, shouldn’t you be giving us the equations? 😂😂😂
The diode the video shows as being faulty was not faulty. The test showed a 0.6V drop in forward conduction, and a greater than 40V drop in reverse. Which is what you would expect from either a normal silicon diode, or a zener with a voltage above 40V. A faulty diode would either show no drop (i.e. 40V) in both directions, or a low drop (
Just a brilliant idea. I'll be making this one for sure. Cheers
Nice soldering and putting leads in multimeter- good music also
❤️
You always want to add a medium value resistor in parallel with the capacitor, so that you will not have a fully loaded capacitor when you turn the power off. Unless you don't mind having a charged capacitor on you're bench. Just some room for thought.
It's only 40volts so not a big deal, I'd be more concerned that the capacitor is only 35v so very likely to fail eventually. And the transformer is much larger than needed but I guess you use whatever you have. Another big concern is the centre tap left uninsulated so close to the end windings wires, an accidental touch could weld them together then eventually the thing will burn out if left unattended.
@@stevelloyd5785 Bleed resistors are usually only necessary for high voltage smoothing caps.
@@davemould4638 That's pretty much the point I was making when i said "It's only 40 volts.." I did make a couple of other points though, no comment?
@@stevelloyd5785 Yes, the insufficient cap voltage is an oversight by the video maker. I suspect that he originally made a center-tap full wave rectifier using two diodes (which is what is portrayed in the video thumbnail), then decided to change the circuit to a single diode half wave rectifier using the whole secondary winding. This created the two issues you highlighted - too low a voltage rating of the cap for the increased voltage, and the mechanically iffy floating unconnected center tap. I always regard these type of vids as portraying a conceptual idea rather than a detailed build instruction. I'm pretty certain that anyone building such a device would use their own construction methods rather than building it exactly as shown in the video (in particular using heatshrink on floating wire joints), so the inadequate cap voltage is the most serious issue I see.
It is perhaps also worth pointing out that the "diode" mode available on most digital multimeters achieves exactly the same thing except that the driving voltage is usually low, meaning that it cannot test higher voltage zeners, and the series resistor cannot be changed to better test higher power LEDs. (The readout of the DMM in "diode" mode gives the voltage across the DUT). It can however test diodes and measure the value of low voltage zeners (though you probably won't know how low and zeners may therefore test the same as a normal PN diode), and the displayed Vf voltage makes it easy to differentiate between silicon, germanium and schottky diodes (but not identify more exotic types such as varicap diodes, tunnel diodes or avalanche diodes). It will show the low current Vf of LEDs, and will usually light the LED sufficiently to determine its colour (or which pins/direction is which colour for multicolour LEDS). An LED that tests OK but does not light even very dimly on a DMM in diode mode is probably an IR LED.
@@davemould4638 not really. My man has built car trickle chargers to top off car batteries, it too is necessary to discharge the capacitor so you don't get sparks in between changing batteries out from a dead one to a half charge one. I would highly recommend it for safety. You don't use bleed resistors for too much in the way of high voltages, except for a tesla coil or some other high voltage device.
Nice idea idea dear very good
Thank u very much ❤️
Excelente adelante y éxitos 🐈
Very good
सर हम हिंदी भाषा का मन हूं बताइए क्या व्होटेज का हैं दिखे नही आगे ब्रेक लगा है
Thank you
Very Very good 👌👌👌👌🙏💙
Thank u ❤️
Thanks For Sharing Nice References👍
Welcome
👍👍👍 obrigado pela idéia.
Thanks Sir
Very nice vedio full which taime
Thank u very much bro 💖
I like. I want more ideas Thankyou
U welcome
Nice i am sri lanka
Thank you bro
Nice💓💗❤👍🌹🌹🌹🌷
Thanks 👍
Amazing ❤
#TheProjectLab
Thank u
Meater buzzer p set kro led vese hi glow kregi
Thank for your sharing this video, this is very nice
U welcome
very nice
Thanks
Good 👍👍
Thanks
Thanks alot but please what is the minimum and maximum voltage should this transformer have as output volts?
Very useful . Thank you
❤️
very well bro
Thank u ❤️
For diode testing the tension after the chargecondensor is too high, the resistor only limits current, but tension is going thru. A sensitive diode like uhf rf-diode will break, only normal diodes, zener and led can be tested. But each better DVM has the diode test function inside, presumpted a intern testbattery 1,5V is provided.
Very usefully.....
Thank you for comment
Good idea!
Thank you for your compliments
always creative 🌹🌹
Thanks bro
Nice Video Big Bro 👌👌👌
Thank you very much
@@RJEDITALL wellcome bro☺️☺️☺️
Excellent circuits
Thank u bro ❤️
Super
Thank u bro
Faz o esquema desse circuito
Made similar in concept to this but using an Oscilloscope. Displaying Listiger figures (eg:ABC symbol). Allows testing and visual interpretation of components. Resistors Capacitors Inductors Zenners, etc, etc. You can view the breakdown voltage, distortions, etc.
Nice
Thanks
Potentially (no pun intended) useful idea. As David Mould points out, this video presents an idea and is NOT a detailed plan for building a bench top instrument. Thanks for posting.
U welcome ❤️
I made this circuit at my home
It's really work 😃
Thank u bro for comment ❤️
very useful
Thanks
👌🇸🇩👍👍Thankyou
U welcome
Super super super super...
Thank you very much
Sir kitne ampire ka transfarmour use karna hi or transfarmer ka ground wire Khali rahe ga koi connection ni rahe ga na please sr batao
3 ampere transformer, ap 12-0-12v transformer use kar sakte ho, middle sur ke
Ap bisa mengetes elco 1000uf 35v
Clear not understand
Useful information
But silent video is not enough useful all . please make video with voice
Thank you for visit
@@RJEDITALL **MAKE VIDEO WITH SOUND!!**
Una pregunta. Porque el tester indica 40 voltios si el trafo es de 12 v ? Y ademas le pones un capacitor de 35 v y la lectura da 40 voltios .
you try, you will understand
@@RJEDITALL no entiendo tu respuesta.
In your project you have mentioned the diode used is 4007-5408 please clarify whether 4007 0r 5408 Could be used . thanks. W.Vithana
Yes, you can any use
Just about any ordinary diode will be fine.
sir make a la4440 amplifer palte board with full electronics components
Ok, I will try
@@RJEDITALL ok sirji
Bahut Mast,Very Nice Idea 💡,
I'm'm still think 🤔 why I'm needing this circuit 🤔
Because, you can check the led and zener diode
Digital Ampere meter pr reading wapis nhi jati load htany pr kya fault ho skta ha. Mtlb agar istri ka load dalny pr 4.3 ampere show hta ha jb istri ka switch htaty hn to meter pr wo hi load 4.3 ampere he rhta ha wo zero ni hta
No fuse or safety on transformer earth. Lovely. Be safe out there!!
❤️
Muito platico
👌👌🌷🌷👌👌💝
Thank bro
❤️❤️
hola excelente proyecto una pregunta funcionaria con un transformador q saca 35voltios ac ???
Clear not understand bro, you can use 35v ac, and capacitor 1000uf/50v
@@RJEDITALL The electric network probably gonna give a higher voltage than nominal voltage, so the secondary must have a voltage also higher than nominal, so the 50V isn't enough because the rectifier voltage gonna be higher than 50V, at least 63V, remember, 37 *✓2 = 52, and this destroy the 50V capacitor after a time.
Wow Mast
❤️
There must be a problem with the line voltage. You showed 12-0-12. Thats 24v. Peek voltage is 24* sqr(2)=33.9v. Or you need a new DMM.
Interesting video, but I question when numbers don't match.
My transformer output supply 15+15v = 30v convert to dc with diode n capacitor = Near 40v dc. Increase voltage for capacitor. Thank u ❤️
The 12-0-12 is rated at the stated load. Because of internal resistance, a transformer produces a higher voltage at a lower load.
@@TomCee53 : The voltage rated is RMS (average); the capacitor stores to peak voltage and is what the meter shows.
Sir , please Change the caption to chance /benifit the interesters... Who finding the video 🇮🇳👍💓
I agree. The present title is clickbait.
It should be called, "Easily Testing LEDs, Diodes and Zeners".
Then people who want to know this information can find it.
Sir iss se multimetre kharab to nhi hoga na mera?
Nah hoga bhai, ❤️
I've been wondering how to measure zener diodes. I use them for guitar distortion/ signal clipping. Regular lab equipment doesn't test for this.
❤️
All I know, zener diode also tested as normal diode test
@@francisgaming5016 Zener Diodes are primarily used backwards (reverse connections) as they have a lower than normal reverse breakdown voltage than normal diodes. their strength is their ability to hold a steady voltage when wired up (or tested) in reverse conduction mode, so you would logically want to test them out in the reverse direction just as shown in the video. Forward direction testing just yields the normal silicon diode forward voltage drop of approximately 0.65ish volts DC. I hope that helps!
In fact Zener diodes are so predictable and reliable that other integrated circuit (chips) will use them as an internal voltage reference... like an analog-to-digital converter (ADC) might use one to internally set the maximim range of its measurements.
I don't get it.
Quilômetros
A half wave power supply is the most useful tool for every home???? REALLY LOL
deer frende
your circuit can damage led in toching in rverse
No damage led, because current is very low
@@RJEDITALL he said in reverse, and he's probably correct
Nice information, thanks for sharing, like it :)
U welcome
2ampier transformer chale ga
Bhai, chalega
Test LEDs at LESS THAN 5 VOLTS so you don't blow them out if connected in reverse.
current is very low, led will not incur any losses
Im beluga. I can do anything
❤️❤️
👍👍👍
❤️
35v capacitor for 40+ Volt circuit ? I guess your transformer is not really 12v-0-12v
Yes, 15-0-15v transformer, you can try, 100% understand
16v and 12 charge kar sakte hai
Veryverygod
Thank u
Full respect bhaii
Thank you very much bhai
I did not see the measurements of the capacitor. how many volts and if
Arkadaşım eline emeğine sağlık süper olmuş bir sorum olacak 12v zener diyotun watı nı nasıl bilecem yardımcı olursanız sevinirim
Depends of size, thanks
Paylaş mış olduğunuz bilgiler için cok teşekkür ederim istambulda selamlar
👌👌
Thanks 👍
If you connect such a high voltage to an LED incorrectly, there is a good chance that the LED will become defective.
No bro, no damage led for using Rasistor
what is value of the capasitor sir,
1000uf/35-50v
@@RJEDITALL Respectfully sir, you have 40V output (shown on your meter), so the capacitor must be 50V minimum.
inline fuse!
Sir 12 v Traspharmer nhi hai mere pass 3 v ka hai kya mai uska use kar sakta hu same circuit par
Yes, but ap 3 v Tak check kar payoge
@@RJEDITALL thanku sir
Please make welding tool with this transformer
Important heavy watt transformer
I dont understand what was that? its just a power source? or not
Led, zener diode tester
I've watched this video through to the end...
... and still cannot figure out what this thing is; or,
why I should 'need' it...
???
It basically gives you a set of power supplying leads reading potential all the time 40 vdc all the time, when you you you put it across a "load" like an LED , a Diode, it will allow you to power the load and see what the voltage drop is across the load, it can identify a bad component if the voltage is known, but if you have a bunch of the same LED it will tell you what the voltage rating is. Very useful when digging thru unmarked or hard to read scrap parts....
sir kiya mitar DC range pe he
Ha , Bhai DC Range pe
How much Transformer output voltage
28v
Can someone please explain the concept behind this circuit? How this 40V not frying the components? How is it limiting the current ?
I am use Rasistor for current limit, you can try for understand
Soldered the low voltage wires yet only twisted the mains ones! Casing of transformer not earthed and no fuse.
Half wave rectification also poor.
Don't try this at home.
I am using for short time , you can try with full wave rectifier bridge ❤️
It's only demonstration, I wouldn't do a permanent circuit tool without isolation, and even a case for example, the case do the work easier, a case and a digital voltmeter, on this circuit case.
Only for LED? Or any object
Zener diode
Can I use analog multimeter, how can use it please tel me.
Please check in my Channel
Show this with 120 volt input
Yes
betteriy charge kar sakte hai
Yes, ap transformer ka 0-12v side me connection karke battery charge kar sakte hai. Aur Rasistor remove karna hoga
@@RJEDITALL 16v betteriy charge hogsakti aur 12.6 littam charge kar sakte hai
@@rohanlikee794 ha, 12.6v battery hu sakta hai. 16v volt nahi hoga
I think this is full wave rectifier.please discribe how it's work
You try, 100% you will understand
How about a 2.5 amp fuse on the secondary. side of tbe transformer.
You can connect
❤️❤️❤️
Thank u very much for visit
berapa amper pada gulungan travo ?
3 ampere
Health and Saftely says NOPE
You can't rely upon the accuracy of the readings because each diode will be biased differently - the circuit simply tests whether the component appears to be working (at that bias point at least).
This system half wave rectifier bridge,
@@RJEDITALL Yes. It's a simple way to test a diode to generally indicate whether it is working, nothing more. The bias will vary from diode to diode because each diode is different and because the rectified voltage is likely to be different even for the same voltage due to the capacitor being the only means of voltage regulation.
@@we-are-electric1445 The forward voltage drop for LEDs does not change all that much for different currents (i.e changes in series resistors & drive voltages). The voltage for zeners changes even less - after all that is the very function of a zener!
@@davemould4638 The circuit is a basic test as to whether the component appears to be working - nothing more than that. Most meters have a diode test and you really don't need to go to the complication of a mains transformer as a battery and a resistor will do the same without the risk of electrocution from an unearthed transformer.
@@we-are-electric1445 No, it does more than just testing whether the component is working. A normal DVM will not let you test a zener above 9V, and probably a much lower voltage, and will not adequately test a high power LED. This tester will allow you to both test and determine the voltage of a zener, and is also better than the average DVM in determining the forward voltage of an LED, or testing a module containing several LEDs in series. If you are not competant in buildling mains driven projects safely, then it is true that this project would not be for you, although in this case there is negligible chance of an electric shock so long as you use a modicum of common sense. By all means connect an earth to the transformer core and one side of the secondary if you are worried, but the electrocution risk is less than that from the average phone charger.
if you reverse the polarity of the resistor will it work/?
Yes working
Resistor don't have polarity, don't matter if you feed with AC or DC current.
Exactly.
What is this for???
Led zener diode tester
very good
Thank u
Why is it useful? To light a DC LED with AC Power?
No bro, output dc volt for use diode, half wave rectifier
I have a transformer 9-0-12, I can use 9V, 12V or 21V, but even if I only had the 12V, I can use voltage doubler circuit!
If I were use this doubler on 21V AC I'd get about something near 60V DC!
If the transformer is only 6V, we can use voltage quadrupler circuit in this case.
Why do you want to make it so difficult? 9vAC will get you around 12.7vDC, the diode will drop about.0.7v leaving 12v. Put 1kOhm in series and you have a maximum of 12mA. More than enough for testing LEDs except for some higher voltage setups.
@@stevelloyd5785 No man, I don't have the intention of making this difficult, I only sign different ways of doing this circuit, everything is right, but if I have around 30V to 40V is enough to test 30V LED panels, I sign that even when we have only a 6V transformer is possible get this higher voltage.
We can also do a simple version with a higher voltage transformer without voltage multiplier like him, he uses a 14V + 14V (28V) transformer, from this voltage, he gets around 40V DC, simple, we only have to use voltage multiplier when our transformer voltage is low.
@@stevelloyd5785 I have a simpler circuit than yours, 8x 1,5V Zinc-Carbon batteries (12V), and the 1 K resistor, don't even use a capacitor hehe.
is said build this circuit then builds a different circuit.
Ok, ❤️❤️
Is it necessary to have a 40 volts o/p transformer?
Best supply 25-30v for 24v zener diode test
This transformer is rated about 24V (12+12), I found out by math, 30V / √2, I got something above 24V but I know this is electric network variation on power input transformer.
Any phase to center tap has something about 14V on this transformer, bi-phase has about 28V.
@@dschannel1171 yes bro, my transformer output supply 28v + more volt add for capacitor
@@RJEDITALL Sometimes it's a matter, for example I have a PC soundbox that I used, before have a USB one, it used a 0 + 9 transformer, but this transformer gave 12/13V AC, what resulted on 18V DC, what unavoidably damaged my IC TEA2025, a voltage when hits 15V DC already damages the IC, the previewed voltage is something about 12V (9,5 * ✓2 = 13,43 - (1,4V drop on rectifier bridge) = 12,03), when the voltage goes more than the rated, can damage circuits, I had popped capacitors, and a damage IC, I had to change all, now I have this repaired soundbox stored, and now it works with a 9V 1A transformer (Was a 0,2A before, and I know the peaks can hit 0,5A or even more), and the voltage output is right, I had found weird your value, because 14 + 0 + 14, I never seen this one, but after a search, I found this exists, if this is the case, your transformer is on right voltage.
PS.: My USB soundbox is powerful, my USB can't handle the power, so I have to use an external USB PSU, it can get 6W or a bit more, I had to put 24 AWG as USB cable to avoid voltage drop too, the original wire was too thin.
@@RJEDITALL On your case, (14 - 0 - 14), monophasic 14V, biphasic 28V, when use the 28V rectified, 28 x ✓2 = 39,6V - 1,4 (drop on bridge) = 38,2V, it's right, on your transformer gives 40V because gives a little more than rated 28,00V AC, it's normal on any transformer.
Change your capacitor to a 50V one, the 35V can pop over the time, you have 40V.
Can I use transformer of 9-0-9 volts?
Yes bro
You have three options for that. Half wave, bridged full wave, or the two combined. It all depends on what you want to power up.
Yes. It will only limit the Zener voltage you can test.
whats this doing exactly?
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