DIY Polarity Tester positive negative finder

DIY Polarity Tester / positive negative finder
Materials Required:
1. Old Bolt point Pen Transparent
2. 2mm copper wire
3. 3K Ohms resistor
4. Red & Green LED
5. Alligator Clip
6. Wires
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Thank you.

[@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.

[@ronjohnson2693]

Nice Job I look forward to what else you make.

[@eberhardmuller637]

very good need more of your ideas for mylab thanks

[@DIYTechTrends]

Great job

[@cosimoparisi622]

Molto bello questo video creativo e ben curato bravo

[@anilpatel1398]

Very good instrument.

[@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.

[@azizbachne2101]

Very Nice, Thank you 💐👍

[@argenisruizpuac3094]

great job my brother excellent

[@Eletrolitico]

magnifico, nota mil.

[@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.

[@chalokipskips2352]

Thanks so much more fun and amazing

[@monujangra3995]

kzbin.info/www/bejne/eKTTYaaKeauFmMU

[@johnnik9236]

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

[@diydinhobr]

Very Good Pen Test.

[@aftabbhatti7980]

Nice project 👍👍

[@alexandrepoloniato4616]

Good job

[@lifelinema562]

Wao amazing 😘😘😘

[@josemayor7333]

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

[@palacioquimera1616]

Good work, thank you for sharing congratulations.

[@renukaamarasinha6407]

Very good thanks

[@pedrolara3518]

ideal excelente

[@yousefyaseen9867]

Marvelous

[@parameswarat3031]

Ya very super sir thank you

[@robertolopez4964]

VERY GOOD IDEA

[@enockmonteiro]

Muito útil 👍🏻

[@qazimtahir]

Lovely 🌹

[@nandigg941]

Good idea

[@tpgupta9079]

Very good.

[@jefjean]

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

[@sciencetechnician8787]

Nice idea

[@severinomorais7494]

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

[@surround1969]

smart idea ... Love it and gona make it

[@user-wb2jq4qn7b]

Wonderful I want to work like you

[@michaelpinch724]

Nice bruh!

[@braddockrock1438]

Muito bom mesmo

[@parthibanm5631]

Very nice 👍

[@armonfrohlich6348]

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

[@ricardoperez7675]

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

[@ricardogarcia-ck7xb]

Muito bom

[@JavedIqbal-ne6lb]

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

[@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.

[@sooriyajeyasooriyan7094]

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

[@souravbhattacharyya3392]

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

[@mahiruhela5119]

Superb

[@emadk.th..3561]

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

[@eslobodan3]

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

[@ihyaulumuddin1711]

Thanks shifu

[@benjaminawat6458]

Nice video..

[@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

[@tameralsebaee1433]

Very simple and practical

[@monujangra3995]

kzbin.info/www/bejne/eKTTYaaKeauFmMU

[@Parymary-ix5db]

Awesome

[@geovanysantos951]

Very good

[@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.

[@zurairkhan]

Amazing

[@ahmadtech7827]

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

[@msomasekhar5612]

Nice video

[@kumartecelectronics6720]

Very nice

[@Ove_Bjerknes]

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

[@augustinechinnappanmuthria7042]

Super 💖

[@eduardomarin33]

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

[@sharukhmatekuki5830]

Nice 👍🏻👍🏻 🇮🇳 || Kuki

[@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.

[@viciriucandreea5835]

Ok felicitari

[@letsgoexperiment725]

💡

[@janinemojar5516]

The tester is used only for battery?

[@lawrencejd8935]

Can you make one for AC?

[@YellowPurple]

❤❤❤

[@arivuazhagan442]

Super super

[@jesusglico2423]

Nice

[@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 .

[@user-qj9vg1dt7g]

Молодец

[@gergemall]

Perfect

[@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!.

[@sophornphin6883]

love

[@sankararumugam5796]

Super

[@bennyignacio9302]

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

[@krishnarjpatil5451]

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

[@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 ?

[@LOURIVALDO86]

Top 👏🏽👏🏽👏🏽

[@redeemchrispanaongon8296]

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

[@Ahmad.Hassan94]

Amazing Bro stay Away Ameen

[@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

[@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.

[@JesusFlores-el5oy]

Hasta cuántos vol se puede medir?

[@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.

[@alyaakoubiyam5587]

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

[@ALeXanDeR-sb9gr]

Cuanto es el voltaje que aguanta

[@abdulhalimoran4335]

👍

[@jyotiacharya3902]

3k resistance could be use

[@555irfanshaikh]

ac line and neutral use this tester pls tell me

[@alyaakoubiyam5587]

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

[@elyankhayat2900]

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

[@DISKARTEPINOYVLOG]

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

[@kayzer64]

It works with 12 volts???

[@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… 😉

[@monuansarivlog]

क्या बात है यार क्या दिमाग लगाए हो,😂

[@khongguan6268]

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

[@alexiperez1280]

Tengo una batería de esas sube un vdo de como se cargan

[@ajleestm3606]

Is this work both AC and DC ?

[@ranjankumarbhattacharyya9941]

Please make a A. C. tester