miroky

modified 6 years ago

Simple current meter for my AC 简单电流互感器电路

245

02:46:12

A simple loop for measuring a phase of air conditioner using esp-32.
Since the AC is 1kW(3 phases), the maximum current is less than 4 amp. And for sampling accuracy, the ADC of esp-32 will work at about 0.5-4.5V. Other fixes will be applied on chip's programing.
这是用于家里空调的电流互感电路，目的是利用esp-32自动获取空调使用的电流量，并进行记录。
因为空调大概是1kW的功率，稍加计算可知单相电流不超过4A。同时为了满足0-5V的取样精度，通过33ohm电阻将取样电压控制在0.5-4.5V。剩余的取样修正通过esp-32程序完成。

published 6 years ago

Robert_Kidd

6 years ago

LB, respect!

kiani

6 years ago

Rob_kidd no need to creep. .

kiani

6 years ago

@miroki. What is that 33 ohm is doing in series with a voltmeter...

miroky

6 years ago

@kiani oh...that is a miss. I have it fixed.

kiani

6 years ago

Noticed you have used 200 volts. If that is to represent mains voltage.. The EC voltage source requests peak voltage and not rms,, so peak voltage of 200 volts is 200*1.414 =282.8 volts peak..

miroky

6 years ago

@kiani Yes, but what i need on high level side is jusr the current waves. To avoid confusion, I change the high level side as your comments. Thanks.

kiani

6 years ago

@miroki no doubt you know what you are doing, but if you don't say it, nobody else would know. When writing reports it is best safe to assume, nobody knows anything unless you ell them. Hope its a great day for you.

hurz

6 years ago

@kiani, im not so sure. 50kHz 300Vpeak uptransformed 1:100 ?? Doesn't look to promising!

kiani

6 years ago

Didn't see or check the transfirmer,, i don't think he means to do this. A lot of people have trouble with transfirmer due to the primary inductance setting, si i think he has just given up on that, as long as he has got 4A on primary side and some voltage on the secondary.. Yes the transformer is 99.9999999% not right. @ miroki dud you read this,, ,, why 50KHz!? Why 1 t0 100 ratio.. !? Not seen right,, what ts the voktage on primary side and what voktage di you need on secondary!?

kiani

6 years ago

@miroki your transformer is crazy.

hurz

6 years ago

and all this with a "coupling coefficient" of exact 1.000! BTW, 1H x 1:100²=10000H secondary impedance, funny right? 10000H x 2pi x 50kHz = Xl = 3.14 GOhm a little high to expect anything on the secondary side.

hurz

6 years ago

I think what a want is something like this, blue is input of arduino ADC Check this http://everycircuit.com/circuit/6506522549682176

kiani

6 years ago

I got it, i don't know about you miroki. Thanks hurz. A jewel thieve came and took info. Fron miroki post.

miroky

6 years ago

Thank you @hurz and @kiani. It's great to learn from you. Since the datasheet of the transformer I brought has no detail of the inside of it, i just try to apply it as the apply guide. This model is just for concept proving. Anyway your ideas are great and make me learn so much. Thanks.

hurz

6 years ago

could you link the transfomer spec so we can take a look?

kiani

6 years ago

@miroki apart from hurz and a very few people on EC nobody know how to model transformer correctly on EC.., ,, , if possible to link transformer data sheet we might all lesrn something, not from me (as i am a professional noob) but perhaos from Hurz.thanks..

Robert_Kidd

6 years ago

😂

Robert_Kidd

6 years ago

Do you know what LB, respect means?

hurz

6 years ago

@roobi_kiddi, you try to lift him for something he does not deserve! Your double moral stink. Because he is not nasty, he gets bonbons preemtive, ridiculous, this is not even a methode to educate dogs.

Robert_Kidd

6 years ago

Kiani, I was trying to understand what you were meaning by ‘LB, respect’. As you know it’s a phrase I used recently but I’m unsure whether you knew what I meant by it?

lenzrulz

6 years ago

Robert_Kidd

6 years ago

Well, I tried.

Robert_Kidd

6 years ago

@hurz, if I had the faintest clue what you were trying to say then I would respond. I think the kiani nonsense is rubbing off on you.

lenzrulz

6 years ago

Lol...😂

hurz

6 years ago

alcohol and alzheimer @robbi_kiddi and his first comment on this thread, "LB, RESPECT"

Robert_Kidd

6 years ago

...and you don’t have a clue what it means.

lenzrulz

6 years ago

@kiani, you're welcome: http://everycircuit.com/circuit/6448172919160832

hurz

6 years ago

@robbi_kiddi, thats propably your biggest issue, you never explain what you write and nobody understands your language, try to learn at least one more international language, and you not need to talk against a wall. Anyway, what is you have to say for EveryCircuit, nothing? Just hate, war and fight ... nasty rude words under alcohol? You are also a noob in electronics and all your circuits are cover. Why are you on everycircuit, !WAR!

Robert_Kidd

6 years ago

And you seem very slow to understand. I am here to stop you bullying other EC users. Unfortunately you’ve made it a lifelong task for me with your refusal to try to act like a reasonable human being. Where in Germany are you? Perhaps I could visit and we could discuss face to face.

hurz

6 years ago

you have nothing to discuss, or have you found new nasty words? Make your lifelong task and have fun with that, vollpfosten.

Robert_Kidd

6 years ago

Idiot!

lenzrulz

6 years ago

Five years of obnoxiousness has numbed his reasoning skills as evidenced by his repetitious condescension.

Robert_Kidd

6 years ago

Kiani seems to be just a numbskull.

lenzrulz

6 years ago

Lol...😂

kiani

6 years ago

I have seen and known Christians who believe. You len are an imposter. You even used that for permoting hate.. Season greetings.! You have good friends to help you follow your path to gates of damnations. Why are you doing this!? For a laugh!?

lenzrulz

6 years ago

hurz

6 years ago

Trolls Lenny&Robbi, why are you here, do the hell electronics, even you cant, but try at least. I think this is something like this, blue is input of arduino ADC, Check this http://everycircuit.com/circuit/6506522549682176

Robert_Kidd

6 years ago

hurz

6 years ago

right, you both are not interessted in electronics. Remember this is not "counter strike" its Everycircuit !

lenzrulz

6 years ago

hurz

6 years ago

@robbi_kiddi and @lenzrulz read this again, @miroky said: "Thank you @hurz and @kiani. It's great to learn from you. Since the datasheet of the transformer I brought has no detail of the inside of it, i just try to apply it as the apply guide. This model is just for concept proving. Anyway your ideas are great and make me learn so much. Thanks."

lenzrulz

6 years ago

Cool...👍🏻

hurz

6 years ago

do us all and yourself a favour and deinstall everycircuit, and look for another terror-hobby.

Robert_Kidd

6 years ago

You do talk crap.

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