pownyqt

modified 7 years ago

Help. Parallel supply source is shorted

149

01:58:15

If I put in real 3 x 9V parallel there is no problem about it. I have 9V and 3 times bigger Ah. But in "every cirquit" I have a problem. Can someone explain me how can I built a correct cirrquit with parallel switched batteries? 
And why can I only make input of the Voltage but not Amperes? Sorry if my question is stupid. I am the slow learner and beginner at the same time but I want to learn this stuff 

published 7 years ago

ViolationMad

7 years ago

So the EC's constant voltage supply is basically ideal so there would be infinite current when its shorted (if there was no message for that). So there would be no reason to use more then one.

ViolationMad

7 years ago

If you just want to show that there would be more than one supply, you could add the real internal resistance to each of the supplies or just the smallest possible value.

pownyqt

7 years ago

I try to simulate a rechargeable battery package for supply my devices, which I use at home. I will put in some internal resistance.

pownyqt

7 years ago

ViolationMad, I put 2 resistors in the circuit. What I see is, that 2 of 3 sources are useless because the are supplying no current. That is not a point I wanted to have achieved

crake

7 years ago

Check this out: http://everycircuit.com/circuit/5106841670647808

ViolationMad

7 years ago

@crake thanks that is what i was trying to tell.

crake

7 years ago

Yeah, no problem @ViolationMad i figured that's what you were suggesting to him.

pownyqt

7 years ago

I wished, I could understand you both like you understand each other :). I'll try to get smarter of your proposed link. Thank you!

pownyqt

7 years ago

Crake, I did the same like you. But my resistors looks another way. I think, I forgot a resistor by the middle source. I could not open the circuit, that you made (maybe becaouse of my browser) but I saw a little picture of the circuit and I think I know what you mean now. I am only wondering about "why this app doesn't have a common battery as a symbol?".

crake

7 years ago

I think some apps do offer a battery symbol, but it isn't really necessary unless you want to make it explicit in your schematic that a voltage source is a battery. I'm not sure if other simulation software makes non-ideal battery models, as I haven't looked for anything like that before.

TheAxl

7 years ago

The problem is that they are power sources, not batteries. In this program, the best thing to do would be to use 1 power source and then represent the batteries in the circuit with resistors. If you can, test the Ohms across a battery with a meter. Using this kind of model, you can determine amperage across each battery and easily calculate amp-hours per battery.

pownyqt

7 years ago

Thank you Guys (crake and TheAxl)! I wanted also try to simulate the Lithium ion Akku to build a block of little Akkus which I switch in series+parallel to achieve required voltage and capacity in Ah :). *peace and harmony to all*

yra

7 years ago

Common grounds to battery to resistor to common supply to load. Move one resistor and common your supply

DavidDeLaTorre

7 years ago

Hi i have had the same problem. You need to think about a pice of wire the wire dose not have a 0 restriction the wire has a very small restrictions. So all you need to do is just add a resistor like 1ohm whitch acts like a pice of wire the App is a digital device and dose not have the wire resistance in it. So just think of the 1ohm resistor as the wire restriction. Please for give my spelling.

DavidDeLaTorre

7 years ago

Hi again i have updated the need help of the problem of parallel supplys. I left my need help up and updated it with my fix. But with thanks to the people that help me.

DavidDeLaTorre

7 years ago

Sorry here is the link http://everycircuit.com/circuit/5526385585291264

pownyqt

6 years ago

Thank you David!

kiani

6 years ago

@pownygt. Voltage sources on EC are perfect sources and di not have any internal resistance or impedance like batteries and like real life.. So their internal resistance is ZERO. And if put them in parallel, Bang... So you need to make them real by putting a small resistor in series with them.... Ok!?

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