DIY Polarity Tester positive negative finder

[@sandywoolf2883]

The video explains very well. The voltage test pen is still necessary. I bought a renhotecic brand test pen not long ago. The test is very convenient, accurate and safe. Family must.

[@elektro_hirurg_2792]

8 лет назад собрал себе такую контрольку, только свечение делал красное при плюсе,а зеленое при минусе!

[@janerossi3022]

скажите пожалуйста, для теста с акума авто 12 вольт, килограмма резистора хватит? я просто не умею считать, не сгорит ли диод? я планирую до 5 кил резисторов набрать. Схема чуть другая, диоды будут запитаны на обе полярности ,что бы не менять туда-сюда клему крокодила, типа подключил раз и не лазишь больше к крокодилам. Спасибо

[@elektro_hirurg_2792]

@@janerossi3022 давно дело было, завтра посмотрю, отпишусь.

[@BrunoMarron-qi4uo]

Revisa cuál es la corriente máxima que puede entrar a tus leds, suponiendo que es 2 mA tu resistencia debería ser de 6k Ohm.

[@ikercortes]

Thank you very much, I had to do a project for my school and your video worked very well for me.

[@DIYTechTrends]

Great job

[@jamesjones-yn1sv]

thanks for the reply. My question about the 3K resister i ment can you use one 3K resister instead of three separate 1K resisters. thanks

[@urla.tejaswitaruneee2483]

Thanks for your circuit Anna. Great idea. Can you please upgrade this circuit to check an AC supply polarity. Thank you.

[@saouga53]

Ac hasnt polarity .

[@sooriyajeyasooriyan7094]

வணக்கம் Good idea for you. But you can simply use dole polarity led for this idea. Good work brother ,, Jaffna, sri Lanka

[@Ove_Bjerknes]

In the video the leds is soldered minus to minus. Is that right? I think it's opposite?

[@eduardomarin33]

Hola buen video, este me puede servir para detectar voltajes de 110 a 120 vols o solo para voltajes pequeños

[@jamesjones-yn1sv]

great video please could you explain joining the led's is it positive to negative or positive to positive and could you use a 3 k omh resister to save space thanks kind regards j.jones.

[@jeyapandiann7051]

It should be positive to negative... Forward BIAS condition of a diode will be satisfied... Hope I am correct.. Thanks for the video.

[@555irfanshaikh]

ac line and neutral use this tester pls tell me

[@JasonChullet]

Good job sir keep it up

[@argenisruizpuac3094]

great job my brother excellent

[@kayzer64]

It works with 12 volts???

[@seanporseur0918]

He used three 1K ohms 1/2watt resistor here, but i think you can replace it with 3k ohms 2watts resistor just to lessen space😁.

[@bennyignacio9302]

the legs of the bulb? is it both negative positive pairing?

[@simonilett998]

I think it would make more sense if when the clip is on the negative terminal and tip is to the positive terminal it shows Red, and when the clip is on the positive terminal and the tip is to the negative terminal it shows green...But just my opinion👍

[@vijayannair5932]

Yes, you are very correct.

[@shaikhamiruddin5848]

Right, I also thinking the same.

[@alyaakoubiyam]

هل يمكن تشغيل القلم مع تيار كهربائي 220v فولط ؟؟؟ 🤔🤔

[@ajleestm3606]

Is this work both AC and DC ?

[@eslobodan3]

hay que invertor los polos de los led ya que ++ - - no punciona

[@anilpatel1398]

Very good instrument.

[@ronjohnson2693]

Nice Job I look forward to what else you make.

[@macmusic12]

I liked your video, I wonder, way you didn't use one 3kΩ instead of 3 resistors, is there wattage or heat dissipation reasons? 👍🤔

[@gautamcreations235]

Availability issue, as I think.

[@javierpeluffo7304]

Muy bueno

[@josemayor7333]

Si inviertes la polaridad para que encienda el rojo cuando la punta del tester toque el positivo sería perfecto para uso automotriz

[@miguelsaavedracorrea5578]

En el minuto 4.30, porqué soldó otro alambre en la punta si ya había soldado uno anteriormente?

[@edgarpy1088]

Es lo que tambien me parecio entender.

[@redeemchrispanaongon8296]

what is the voltage range of this tester? can this be used for automotive?

[@oussamachahid7672]

Yes, thanks for the valuable efforts towards us.

[@krishnarjpatil5451]

Is it possible to make tester for conductor testing , like checking continuity of bunch conductor

[@sharukhmatekuki5830]

Nice 👍🏻👍🏻 🇮🇳 || Kuki

[@janinemojar5516]

The tester is used only for battery?

[@jeffreyatenta2100]

Boss ask ko lang kung pwede yan pang test sa motor KO?

[@Gadgets-q2x]

Bhai ap ne to koi cell ya battery b nahi dali. Phir ye kesay ?????

[@justabasslover4404]

PLEASE REPLY!, I REALLY NEED YOUR HELP!. I bought a class d tpa3110 amplifier 2x30w, and it seems that the markings on the speaker output, 1 channel is out of phase but I don't know which channel is in correct phase if it is the right or left channel. Will this invention find the right polarity of the output of my amp? Thank you in advance!.

[@AHy279]

Many other videos just use 1x 1K resistor, why in this video we need 3x 1K resistor? Maybe someone can explain, please?

[@ricardoperez7675]

no explico que los polos de los led hay que soldarlos de forma invertida.

[@parthibanm5631]

Very nice 👍

[@VipanKumar-xj5jv]

Sir ji aap prodect hai to bahut Ashaa par jo aap nay L E D ko LED kay sath soldering ke hai wo to samaj nahi aaii LED KO KEHSE KANEKSHAN KARNA HAI PLUS KO PLUS KAY SATH KARNA HAI YA PLUS KO MINES KAY SATH CANEKSHAN DENA HAI YEH BATAO JI THANKS JI 🙏

[@emadk.th..3561]

احسنت العمل ... لكن الاقطاب معكوسة .. 👏🏻👏🏻👏🏻

[@Lemmax-X-exdom]

The circuit diagram is missing. - Falta el diagrama del circuito. (19 . III . 2023).

[@cosimoparisi622]

Molto bello questo video creativo e ben curato bravo

[@eberhardmuller637]

very good need more of your ideas for mylab thanks

[@diydinhobr]

Very Good Pen Test.

[@rangiroa100]

Lahis Tech. 1) I have a high power supply that can go up to 35000 volt. How do I test to see if the unit to put out positive polarity voltage or negative polarity voltage ? 2) What is the difference between a high power supply that put out positive polarity voltage and negative polarity voltage ?

[@ahmadtech7827]

According to ohms law the resistors are in series=+ you add 1+1+1=3k ohms

[@elyankhayat2900]

Than you Very good idea would you help me by circuit diagram .

[@DChrls]

Nice video and easy to follow. No language barrier in this video. But what I really want to know is how you got that piece of solid copper wire that was soldiered to the LED to change into a piece of insulated multi strand copper wire. You sir are a wizard!

[@monujangra3995]

kzbin.info/www/bejne/eKTTYaaKeauFmMU

[@misugijun]

that catched my attention when i was watching too, lol

[@edgarpy1088]

@@misugijun , Igualmente.

[@christosmakariou4574]

Does anyone know the type and model number of that pen and where to buy from cheap online? I live here in Cyrus and I have never seen any transparent ballpoint pen with that much inner diameter to fit a small led inside. Could someone provide a link to an online store pointing to the item in question to buy it online? This is a must-make DIY project and a must-have tool in your kitchen's handy tools drawer.

[@msomasekhar5612]

Nice video

[@jaynerona9196]

Nice video. Can I use that in 12 volt car battery?

[@ihyaulumuddin1711]

3k resistor absolutely can handle 12volt battery

[@DISKARTEPINOYVLOG]

very interesting video.. good job sir thanks for shAring this video

[@souravbhattacharyya3392]

Very nice project, did you file the iron tip or it had pointed tip since you purchased it?

[@SaraswathiRMSaru]

Please I need explanation of this project.

[@aftabbhatti7980]

Nice project 👍👍

[@khalilullameeshua5420]

வணக்கம் சார் உங்கள் வீடியோ காட்சிகள் மிக அருமை. இதே போல் எனக்கு tester செய்து கொடுக்கவும் சார். இதற்கு வுண்டான தொகை ( பணத்தை) தாங்களுக்கு அனுப்பி விடுகிறேன். Pls sir .

[@JesusFlores-el5oy]

Hasta cuántos vol se puede medir?

[@Daily.ahmad707]

Amazing Bro stay Away Ameen

[@azizbachne2101]

Very Nice, Thank you 💐👍

[@liteacetoyota8917]

Ur good but something is not right ..red must be positive not green light..

[@lawrencejd8935]

Can you make one for AC?

[@narayandasshrestha4197]

Can we check 220v dc also?

[@geminmahraj]

See, the leds must withstand the 220dc.

[@augustinechinnappanmuthria7042]

Super 💖

[@morelbuendia3622]

Do you make testers for AC?..If you do please share some ideas. Thanks!

[@damienweber2067]

There is no polarity on AC, so nothing to test… 😉

[@tio8189]

led your seri or paralel

[@sciencetechnician8787]

Nice idea

[@romeogarrovillas4046]

what color is the positive and negative?

[@lawrencejd8935]

Red as positive

[@surround1969]

smart idea ... Love it and gona make it

[@geovanysantos951]

Very good

[@mohamedmusthaq7629]

Unless it can detect polarity of SMD components. That job can be done by a multimeter

[@armonfrohlich6348]

does it make a difference in function if you use a 1mm wire instead of a 2mm wire? Great Clips btw

[@bramahanandasontakke106]

1.5 KILO OHM KA 2 RESISTANCE USE KARE SAKTE.

[@monuansarivlog]

क्या बात है यार क्या दिमाग लगाए हो,😂

[@benjaminawat6458]

Nice video..

[@maxwellrodriguesmoraes4882]

PODERIA COLOCAR UM RESISTOR DE 2K7, OU UM DE 3K2; ASSIM NÃO PRECISARIA DE TANTOS RESISTORES...SERIA INTERESSANTE TAMBÉM USAR LED'S DE 3 mm.

[@alyaakoubiyam]

هل يمكن تشغيل القلم مع تيار كهربائي 220v فولط ؟؟؟ 🤔🤔

[@RahulDas-fg2fg]

Music name please tell me 🙏🙏🙏

[@sulaimanman7681]

Bang mau nnya ukuran resistor boleh beda.

[@robertolopez4964]

VERY GOOD IDEA

[@multitalent7273]

Were we find this type of copper wire

[@WorkshopofGeniuses]

kzbin.info/www/bejne/pYDUpoF5mbaKapo

[@renukaamarasinha6407]

Very good thanks

[@YellowPurple]

❤❤❤

[@jyotiacharya3902]

3k resistance could be use

[@tpgupta9079]

Very good.

[@alainlasnier8900]

baterie voltage ??????

[@tameralsebaee1433]

Very simple and practical

[@monujangra3995]

kzbin.info/www/bejne/eKTTYaaKeauFmMU

[@chalokipskips2352]

Thanks so much more fun and amazing

[@monujangra3995]

kzbin.info/www/bejne/eKTTYaaKeauFmMU

[@severinomorais7494]

Muito bom, fiz um teste de polarização com resistor de 3 kohms nota 10.

[@Parymary-ix5db]

Awesome

[@ALeXanDeR-sb9gr]

Cuanto es el voltaje que aguanta

[@lifelinema562]

Wao amazing 😘😘😘

[@ranjankumarbhattacharyya9941]

Please make a A. C. tester

[@AnkylosSpondylos]

why 3x 1k resistor. Cant we use direct 3k resistor? And can we use this any voltage?

[@ricardoperez7675]

exacto, la suma de 3 de1k es 3 k ohms, no tiene sentido lo que hizo.

[@AnkylosSpondylos]

@@ricardoperez7675 i cant speak that language sorry

[@ricardoperez7675]

@@AnkylosSpondylos ​ Exactly, the sum of 3 of 1k is 3 k ohms, it doesn't make sense what you did.

[@JavedIqbal-ne6lb]

Thanks sir very good work I like your nice thyou 🌴 Javed Iqbal from Sialkot City Hall 🇵🇰🇺🇲

[@gautamcreations235]

Can anyone suggest the resistance value for 110volt dc and 24volt dc system

[@josealbertoteranllovera3219]

brother I recommend you use a 5.6K or 10K resistor to check 110v

[@nandigg941]

Good idea

[@vishnukumawat593]

Sir plies, ckt ka video banna

[@johnnik9236]

Solo hay que cambiar el alicate de cortar😀. De mas👍👍

[@palacioquimera1616]

Good work, thank you for sharing congratulations.

[@bramahanandasontakke106]

3 KILO OHM KA 1 RESISTANCE USE KARE SAKTE.

[@zurairkhan]

Amazing

[@alexandrepoloniato4616]

Good job

[@sankararumugam5796]

Super