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

[@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.

[@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 .

[@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.

[@sooriyajeyasooriyan7094]

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

[@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.

[@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

[@Ove_Bjerknes]

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

[@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

[@ronjohnson2693]

Nice Job I look forward to what else you make.

[@eslobodan3]

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

[@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😁.

[@oussamachahid7672]

Yes, thanks for the valuable efforts towards us.

[@eduardomarin33]

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

[@anilpatel1398]

Very good instrument.

[@cosimoparisi622]

Molto bello questo video creativo e ben curato bravo

[@eberhardmuller637]

very good need more of your ideas for mylab thanks

[@argenisruizpuac3094]

great job my brother excellent

[@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.

[@555irfanshaikh]

ac line and neutral use this tester pls tell me

[@bennyignacio9302]

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

[@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 🙏

[@ricardoperez7675]

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

[@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 ?

[@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!.

[@redeemchrispanaongon8296]

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

[@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.

[@alyaakoubiyam]

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

[@JasonChullet]

Good job sir keep it up

[@janinemojar5516]

The tester is used only for battery?

[@severinomorais7494]

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

[@emadk.th..3561]

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

[@sharukhmatekuki5830]

Nice 👍🏻👍🏻 🇮🇳 || Kuki

[@krishnarjpatil5451]

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

[@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 ؟؟؟ 🤔🤔

[@ahmadtech7827]

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

[@Lemmax-X-exdom]

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

[@azizbachne2101]

Very Nice, Thank you 💐👍

[@YellowPurple]

❤❤❤

[@souravbhattacharyya3392]

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

[@kayzer64]

It works with 12 volts???

[@DISKARTEPINOYVLOG]

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

[@Gadgets-q2x]

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

[@ajleestm3606]

Is this work both AC and DC ?

[@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… 😉

[@armonfrohlich6348]

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

[@jaynerona9196]

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

[@ihyaulumuddin1711]

3k resistor absolutely can handle 12volt battery

[@JesusFlores-el5oy]

Hasta cuántos vol se puede medir?

[@surround1969]

smart idea ... Love it and gona make it

[@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 .

[@romeogarrovillas4046]

what color is the positive and negative?

[@lawrencejd8935]

Red as positive

[@liteacetoyota8917]

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

[@RahulDas-fg2fg]

Music name please tell me 🙏🙏🙏

[@elyankhayat2900]

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

[@parthibanm5631]

Very nice 👍

[@diydinhobr]

Very Good Pen Test.

[@lawrencejd8935]

Can you make one for AC?

[@Daily.ahmad707]

Amazing Bro stay Away Ameen

[@JavedIqbal-ne6lb]

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

[@chalokipskips2352]

Thanks so much more fun and amazing

[@monujangra3995]

kzbin.info/www/bejne/eKTTYaaKeauFmMU

[@mohamedmusthaq7629]

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

[@bramahanandasontakke106]

1.5 KILO OHM KA 2 RESISTANCE USE KARE SAKTE.

[@narayandasshrestha4197]

Can we check 220v dc also?

[@geminmahraj]

See, the leds must withstand the 220dc.

[@johnnik9236]

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

[@tameralsebaee1433]

Very simple and practical

[@monujangra3995]

kzbin.info/www/bejne/eKTTYaaKeauFmMU

[@MubeenAnwar]

Hey Man you deserve a like, but kindly reply to the comments.

[@เจษฎาพึ่งภพ]

ดุหนังใป้ไทย

[@monujangra3995]

kzbin.info/www/bejne/eKTTYaaKeauFmMU

[@multitalent7273]

Were we find this type of copper wire

[@WorkshopofGeniuses]

kzbin.info/www/bejne/pYDUpoF5mbaKapo

[@nanad103]

Your actions are very fast. Please show with diagram How 2 LEDs are connect. Whether parallel

[@vipulgamitvg]

Parallel with oppositie direction

[@nanad103]

@@vipulgamitvg thanks sir

[@SaraswathiRMSaru]

Please I need explanation of this project.

[@alainlasnier8900]

baterie voltage ??????

[@palacioquimera1616]

Good work, thank you for sharing congratulations.

[@enockmonteiro]

Muito útil 👍🏻

[@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.

[@renukaamarasinha6407]

Very good thanks

[@ابوحمودالمطيرى-ث4ظ]

Wonderful I want to work like you

[@ALeXanDeR-sb9gr]

Cuanto es el voltaje que aguanta

[@tio8189]

led your seri or paralel

[@elyankhayat2900]

You can use 1 resistor 3k ohm instead of 3 1k

[@ihyaulumuddin1711]

Its because 1k resistor is easier to find from unused pcb

[@bramahanandasontakke106]

3 KILO OHM KA 1 RESISTANCE USE KARE SAKTE.

[@Eletrolitico]

magnifico, nota mil.

[@msomasekhar5612]

Nice video

[@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

[@sciencetechnician8787]

Nice idea

[@augustinechinnappanmuthria7042]

Super 💖

[@robertolopez4964]

VERY GOOD IDEA

[@ranjankumarbhattacharyya9941]

Please make a A. C. tester

[@monuansarivlog]

क्या बात है यार क्या दिमाग लगाए हो,😂

[@jefjean]

Very good ... Faz um projeto 127v e 220v

[@khongguan6268]

Sy bikin tanpa dioda, yg lamp merah buat nunjukin plus accu, yg hijau nunjukin masa

[@jyotiacharya3902]

3k resistance could be use

[@jeffreyatenta2100]

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

[@lifelinema562]

Wao amazing 😘😘😘

[@mamtabhardwaj1127]

Sir, it will work in AC also or only in DC??

[@askcoachrex426]

Only in DC

[@biblecave7197]

For AC just use an incandescent 12V bulb with wires.

[@geovanysantos951]

Very good

[@vishnukumawat593]

Sir plies, ckt ka video banna