arduino 12v to 5v


Okay. First of all, there are three kinds of components: five, nine and 12 volt components that you need to find out to make this work. Also, you need some capacitors, but the voltage regulator is the one that you need. There are two kind of compound two kinds of voltage: regulators, one it’s it’s caused more – that has thermal cut out inside and drop voltage of 0.5. The cheaper one is to ball drop down and does not have thermal cut out. So it might just warm enough to light in fire. So, first of all, the markings on the components are lm7805 for five volts LM seven, eight, nine four, nine volts LM 7 8 12 for 12, volts easy as that, and they. How do you make the voltage regulator? First, you have plus and minus here it’s 12 volts here, but remember that if you buy the cheaper one, it will output only 10 volts if you have 12 volt input. First of all, you put a capacitor here, it’s a 10 micro farad capacitor, with the markings of 50 volts. Maybe perhaps you might use bigger one or but not lower, one than 12 volts, and you want to use at least 10 microfarads even higher. If you want it more the voltage more stabilized, then you have the lm7805 here, as we want to have 5 volts for our mobile phones or our our gobo gopro hero or to charge up these devices and lm7805.

Here the output goes straight to the plus side of your micro, USB plus cable, and then you have two capacitors here. One it’s 10 micro file has 1 is 0, but micro farad’s, a karamja chemic capacitor, just to make sure that the bigger one stabilizes the voltage and the smaller one is fast to stable, less than small ripple. That might occur. So you have stable 5 volt current here, and let only thing you need to do is add the minus side and just put the adduced leg into the minus side. The voltage regulator has the enough components inside so it could, because normally, if you have like lm317, you put resistors so which determines what will did you come out? I have another video about how to make adjustable voltage regulator, but in this five volt voltage regulator. Just simple minus side: three capacitors and a lm7805 just remember that the more current you draw out and the higher the input voltage is the more the component heats. So you might want to buy some heat heatsink and hook it up into the heatsink. So it passively radiates the heat off from the component, so it does not lead up. Also, I remember I said earlier that there are components, does have inner cut out temperature sensor that cuts out the input and output if it gets too hot. Those might be a good thing to buy. Ok like if you like, dislike. If you disliked and leave a comment, I copied this video from a after tech mods in here YouTube thumbs up for him I’m just making this video and because I got some videos how to make adjustable voltage regulators and how to manipulate car alternator to output.

Sixteen point eight volts, so if you make this stable, 12 volt output regulator, it can make your alternator output to sixteen point.


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More Whotsit time. I need to power a 12V 0.3A motor, and it looks like the current Arduino Uno motor shield can only handle up to 5V. So, I need another power supply, like this guy has. Can anyone tell me what I need to search for on Amazon or Google to g

PIR and 12V LED



Originally posted 2018-01-10 09:32:56.

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Comment (32)

  1. Hi assume this is only for dc voltage? But in all honesty I have not got a clue. I have only ever worked with DC voltage before. I am trying to find a regulated circuit design for a 9vac output from a 9vac Toroidal coil between 3-4 amp. The draw should only be 2.4-2.6amp but always like to build things tougher than needed. If all regulators like this one only go to 1.8amp , am I right in thinking that two could be used in a parallel configuration for 3.6Amp? Or are they available in larger capacities. And would the values or types of the capacitors change in value because of the higher amperage ? Sorry I have very little knowledge of electronics, but eager to learn new skills.

    1. Yes only for dc.
      So you need 110/230V to 9V ac?
      Interesting. So high current also, so you need beefy toroid to make it.

      Or a simple iron transformer with proper coils on each side. You should find guide how to do it in google by searching “iron heart transformer” and “transformer coil winding calculator”

  2. Sorry forgot to add, great “direct to the point approach”, like the no nonsense style and have subscribed. Hopefully you can teach this old dog a few new tricks over time!!

    1. Just use the 12v version in parallel for 12V output. But remember that lm7012 can heat up easily, use aluminium plate to dissipate heat

  3. how can i calcuLATE THE VALUES OF THE CAPACITORS? why there is the need of capacitors? what happens if i don’t use those capacitors in this circuit?

    1. yes but step down converter would be better. Linear regulators waste all the energy as heat. if you use lm7805 it will heat up and its not efficient. Search on ebay buck step down converter.

  4. isit really working sir… and also can i use in 24v and i will be putting power bank circuit it will be work…


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