El Mejor PROBADOR de LEDS Casero

hi friends, I have another testerLEDS, thinking above all about the safety of you since in some countries they have 220 volts of alternating current in their domestic line and the risk of downloads is high the previous tester is very good, but difficult to do for some and this is very simple and this circuit will also be useful for other projects I also have another 4 or 5 videos waiting for them based on the comments questions always in order to help them in their needs and about that I would like to tell you something I always share everything without asking anything, or for the refreshment as "some" I do not sell them the diagrams either, they even scold me because according to, I do not give the values ​​of the components or the diagram When everything is there, in the video but they do not see it complete they just want to get thebenefits of quick information and then they forget to come back, soleast give "LIKE" to the video or SUBSCRIBE and SHARE, which is the minimum I always ask Of course, not all of them are like that and theirPositive comments they always encourage me to continue with this project but what I'm going for is this .

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in the description of the videos there is a "LINK" for Voluntary Donations via paypal, here I am going to show you because maybe they do not know it or do not usually read the descriptions It's been over a year since I added it in the description of each video and there is no donation, at least one peso it is good to help selflesslyand I do that since many times it is useful for them to do a job and the benefits reach their families it's a very big satisfaction for me but sometimes an aid in reverse, even if it is minimal, will be well received because behind each video there are hours of dedication and expense of materials if you can not help in this way, whatcan do sharing my videos and the link of my CHANNEL in their networkssocial, as I've always told you and that will be enough, here I show you my facebook I appear like Jesús López and it has a profile phototelevision with green background or you can look up the hashtag (#eltransformadortv) in the description I will leave the link for any personalized question andI count on your support now if we start with the video I have commented some, that still notthey can interpret the diagrams well so although this is very simple, we will first see the list of parts and we will build it step by step, at the end of the video I will show you the diagram let's use a transformer with 120 volt AC input and output of 24 volts AC with three prongs This is 1 Ampere, but I'm going touse a smaller one also with 120 input and 24 AC output for what they have 220 volts in their domestic line You can start by testingwith a 12-volt transformer we are going to need a TIP 47 transistoror one similar Here I previously soldered some small cables to the base and in the collector .

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of any color and in the transmitter, I soldered a black wire that is going to be the negative that will go to the power source a 500 mA fuse, a holderfuse and a push button switch a resistance of 2.

2 K ohms at 2 watts a resistance of 680 ohms a bridge of diodes and an LED diode as indicator, is everythingwhat do we need for the basic circuit if you want to add a heat sinkto the transistor, forward but this circuit, almost does not generate heating we will start with the transistor We are going to place in the base the resistance of 680 oHms once we have the resistanceplaced on the base of the transistor we will use the two ends of the secondary winding of the transformer and on one of the banks, let's solder the resistance and at the other end, we're going to solder thetransistor collector in the central part, solder a red wire and this is going to be our positive voltage input and on the edge of the transistor, in theemitter, the negative remember that you have to put the damper then .

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the fuse, before connectingtowards the power source we can connect it to the source offeeding let's go now with the voltage output here we have the diode bridge this is the entrance of AC the two of the center AC power here we have marked the bridge of diodes with a cut, where is the positive and at the other end we have the negative in the positive we will place the resistance of 2.

2 K ohms and the indicator LED and with this we will deliver towards the probes the positive side andthe negative side now we will connect the AC input to thetwo ends of the transformer ok so we will have this is the positive test tip withyour indicator and the negative probe and we will be able to connect it already to power our LED tester which is actually a DC-DC inverter we can do it with an ac / dc converter, with output between 5 to 9 volts and also, a 7.

4 VDC rechargeable battery can be used this time, it's thewhat are we going to use and this can last up to two continuous hours, illuminating the LEDS enough for several days of testing, with a single charge already connect the multimeter to the voltage output we are going to place some "alligators" and let's try first with himthe AC-DC converter and we will connect a strip of LEDS we press the switch, we see thatthey light .

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here you can see it, with enough intensity and a voltage of 19 volts let's now try the battery now .

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we connect and see the intensity of the LEDS here we havethe indicator LED if you can see it if we connect it backwards, There will not be any problem just will not turn on and we see here the green LED "indicator" on let's perform other tests we will light this full panel here There you can seehow it lights up perfectly let's try this lamp nowLEDS we place negative, positive and we test Either way you must havecaution in handling the tips foravoid downloads here we see the LEDs on Other type of LEDS.

there we have to light the 3 and finally let's trythe 12-volt LED strips we have the green ones there, OK let's try the reds .

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there's and finally the blues all you need is a plastic box and add the input "Jacks", for the probes and finally here I leave thediagram that all in this video friends do not knowforget to support this channel the way you can so we can continue uploading videos of your interest see you soon.

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