DC parallel circuits explained - The basics how parallel circuits work working principle
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Date: 2023-11-17
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Comments and reviews: 30
Raid
I have a degree in mechanical engineering. Was never terribly interested in the electrical side of things because it was harder for me to grasp, so I never paid much mind to my electrical classes. Not to mention I had a very quiet professor from I think the Shandong region of China with a thick accent.
She was a perfectly nice and pleasant person but when you can barely hear or understand the lecture in a big lecture hall you become even more disinterested than you already were.
Fast forward to today and a large part of my job is troubleshooting and resolving electrical issues in an industrial environment. Finally having hands on experience and excellent one-on-one instruction from my boss (an electrical engineer) has sparked an interest in electrical systems and hobby circuitry.
So here i am, refreshing myself to fill the gaps in my knowledge. I can wire up a 3-phase motor complete with relays wired into a PLC, but I couldn't remember the basic principles behind current in series vs parallel circuits.
And it turns out mechanical systems are quite lovely when you know how to electrically automate them.
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I have a degree in mechanical engineering. Was never terribly interested in the electrical side of things because it was harder for me to grasp, so I never paid much mind to my electrical classes. Not to mention I had a very quiet professor from I think the Shandong region of China with a thick accent.
She was a perfectly nice and pleasant person but when you can barely hear or understand the lecture in a big lecture hall you become even more disinterested than you already were.
Fast forward to today and a large part of my job is troubleshooting and resolving electrical issues in an industrial environment. Finally having hands on experience and excellent one-on-one instruction from my boss (an electrical engineer) has sparked an interest in electrical systems and hobby circuitry.
So here i am, refreshing myself to fill the gaps in my knowledge. I can wire up a 3-phase motor complete with relays wired into a PLC, but I couldn't remember the basic principles behind current in series vs parallel circuits.
And it turns out mechanical systems are quite lovely when you know how to electrically automate them.
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Artem992
wow, the explanation for parallel resistance and all of the divisions NOW totally makes sense! thx!
and here's my 5 cents:
a good (and quite extreme) example would be to make a short circuit in parallel, thus (despite the other resistors) the current would flow via the easiest path.
It's easier to see it as leakage. the smaller the resistance - the bigger the hole is.
therefore, the more joints = the more holes you have with current leaking through.
therefore, in parallel setup - the total resistance would ALWAYS be smaller, than the weakest part.
12: 20
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wow, the explanation for parallel resistance and all of the divisions NOW totally makes sense! thx!
and here's my 5 cents:
a good (and quite extreme) example would be to make a short circuit in parallel, thus (despite the other resistors) the current would flow via the easiest path.
It's easier to see it as leakage. the smaller the resistance - the bigger the hole is.
therefore, the more joints = the more holes you have with current leaking through.
therefore, in parallel setup - the total resistance would ALWAYS be smaller, than the weakest part.
12: 20
reply
engineering_mindset
So I have been watching your videos to try and create my own circuits as a complete newbie. I have a buck converter shooting out 6V connected to a 5V LED strip and a 6V 150rpm mini motor in parallel. I notice that when I turn the motor speed all the way up the LED strip goes dim. Why is that? I thought then you connect things in parallel they should both receive 6V because they are in parallel? Ik the LEDs are receiving 1V extra but I think they should be ok. Perhaps im connecting things wrong?
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So I have been watching your videos to try and create my own circuits as a complete newbie. I have a buck converter shooting out 6V connected to a 5V LED strip and a 6V 150rpm mini motor in parallel. I notice that when I turn the motor speed all the way up the LED strip goes dim. Why is that? I thought then you connect things in parallel they should both receive 6V because they are in parallel? Ik the LEDs are receiving 1V extra but I think they should be ok. Perhaps im connecting things wrong?
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Robin
I learned both directions of current flow. After 50 years of working in electronics as a broadcast engineer, I came to the conclusion that theoretical direction of electrons doesn't matter. It only mattered in school. In the field, I have never needed to ascertain which direction. It only matters that they are flowing, by how much, or not.
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I learned both directions of current flow. After 50 years of working in electronics as a broadcast engineer, I came to the conclusion that theoretical direction of electrons doesn't matter. It only mattered in school. In the field, I have never needed to ascertain which direction. It only matters that they are flowing, by how much, or not.
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Sifu-intraining
you say that when we increase volts we get a amp increase due to more electrons flowing so how come in a transformer we increase volts yet current goes down this confuses me i know that power in and power out has to be the same but how can there be more pressure and less electrons?
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you say that when we increase volts we get a amp increase due to more electrons flowing so how come in a transformer we increase volts yet current goes down this confuses me i know that power in and power out has to be the same but how can there be more pressure and less electrons?
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Oleg
Thank you so much! How can I calculate the maximum power of a resistor? I have desoldered a lot of old circuits, but there are no inscriptions on them except of color stripes indicating resistance. Knowing the resistance, is it possible to somehow calculate the maximum power?
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Thank you so much! How can I calculate the maximum power of a resistor? I have desoldered a lot of old circuits, but there are no inscriptions on them except of color stripes indicating resistance. Knowing the resistance, is it possible to somehow calculate the maximum power?
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Greenzo
Thank you for these videos. A few weeks ago I knew NOTHING and just wanted to learn some basic circuitry for low voltage DIY projects for gardening, automation, etc. You helped me grasp all of this and realize electronics arent just magic. Thanks again! :)
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Thank you for these videos. A few weeks ago I knew NOTHING and just wanted to learn some basic circuitry for low voltage DIY projects for gardening, automation, etc. You helped me grasp all of this and realize electronics arent just magic. Thanks again! :)
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Marko
I don't understand why at the beginning when you are showing you are using an electron flow the resistor is behind a led and not in front of the led. If electrons flow from negative to positive potential shouldn't the resistor be in front of the led?
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I don't understand why at the beginning when you are showing you are using an electron flow the resistor is behind a led and not in front of the led. If electrons flow from negative to positive potential shouldn't the resistor be in front of the led?
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sriVenkateswara
i) Total resistance Rt=1. 020ohms
ii) current through 15 ohms is 0. 4 Ampere and R3 is 30 ohms and current through 30 ohms is 0. 2 ohm
. Thank you so much sir for giving excellent information and excellence explanation
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i) Total resistance Rt=1. 020ohms
ii) current through 15 ohms is 0. 4 Ampere and R3 is 30 ohms and current through 30 ohms is 0. 2 ohm
. Thank you so much sir for giving excellent information and excellence explanation
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David
Do you have a video on series parallel circuits I am trying to study and I understand parallel and series circuits individually but I can't calculate voltage drop and current through resistors in a combined series parallel circuit
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Do you have a video on series parallel circuits I am trying to study and I understand parallel and series circuits individually but I can't calculate voltage drop and current through resistors in a combined series parallel circuit
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Hez
I do not understand the example on 3: 23. The illustration circuit shows that current is 3A and resistance is 6 Ohms per resistor how is it that when calculating voltage you are using values that are not in the illustrated circuit?
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I do not understand the example on 3: 23. The illustration circuit shows that current is 3A and resistance is 6 Ohms per resistor how is it that when calculating voltage you are using values that are not in the illustrated circuit?
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Brian
your videos have changed my life. all kinds of projects and homowner diy cost savings are attributed to these videos.
also, per my research 7: 29 connecting batteries in series does not increase amps, but volts instead.
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your videos have changed my life. all kinds of projects and homowner diy cost savings are attributed to these videos.
also, per my research 7: 29 connecting batteries in series does not increase amps, but volts instead.
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smotala1
Never a fan of the line you will never need this part of the explanation.
Need is subjective - my need is determined more by being curious. Some people's need will be determined by passing an exam. Etc.
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Never a fan of the line you will never need this part of the explanation.
Need is subjective - my need is determined more by being curious. Some people's need will be determined by passing an exam. Etc.
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Tracy
3: 05 Your example is 2 Amps, but the meter is showing 3A. This may confuse some. I apologize if I'm not the first to point this out, but with 318 comments, I wasn't going to read through them all.
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3: 05 Your example is 2 Amps, but the meter is showing 3A. This may confuse some. I apologize if I'm not the first to point this out, but with 318 comments, I wasn't going to read through them all.
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Saqlain
If converting parallel resistances into conductance, adding them and converting them back give us total resistance in parallel so why does only adding resistance in parallel not doing the job?
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If converting parallel resistances into conductance, adding them and converting them back give us total resistance in parallel so why does only adding resistance in parallel not doing the job?
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Hallim
The led display on my portable Bluetooth speaker comes on for half a minute and then disappear. With that the speaker stops working. What can be the cause? I'll be thankful for your help
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The led display on my portable Bluetooth speaker comes on for half a minute and then disappear. With that the speaker stops working. What can be the cause? I'll be thankful for your help
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Gabriel
I'm running for an opportunity in my job as a process technician and I came here to review. I understood better in English than in my native language (Portuguese) hahaha thanks a lot!
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I'm running for an opportunity in my job as a process technician and I came here to review. I understood better in English than in my native language (Portuguese) hahaha thanks a lot!
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Campion
Conventional current flow is def easier to understand.
Still can't wrap my head how current flows from the negative, but in a car the negative terminal is connected to the chassis.
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Conventional current flow is def easier to understand.
Still can't wrap my head how current flows from the negative, but in a car the negative terminal is connected to the chassis.
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HoseG
Electronics engineer here taking a trip down memory lane. when I saw that 0. 8A + 0. 5A =1. 2A, I paused for a minute thinking if I forgot a special formula for that being the case
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Electronics engineer here taking a trip down memory lane. when I saw that 0. 8A + 0. 5A =1. 2A, I paused for a minute thinking if I forgot a special formula for that being the case
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Tony
When you asked what the voltage is with multiple batteries, I got 18V since you said current 3A (according to the multimeter) 6 ohms, l for 18 so I am very confused. Can you explain
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When you asked what the voltage is with multiple batteries, I got 18V since you said current 3A (according to the multimeter) 6 ohms, l for 18 so I am very confused. Can you explain
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Skylysi
studying for a med entrance exam after several years of not studying physics. Your videos have been the most helpful so far for electricity. Thank you so much, I'm very grateful!
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studying for a med entrance exam after several years of not studying physics. Your videos have been the most helpful so far for electricity. Thank you so much, I'm very grateful!
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Syndicate
At 5: 39, how does the total amps get increased to 3 Amps? I thought amps were calculated with volts divided by ohms, wouldn't the total amps be 1. 5V / 2 Ohms = 0. 75 Amps?
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At 5: 39, how does the total amps get increased to 3 Amps? I thought amps were calculated with volts divided by ohms, wouldn't the total amps be 1. 5V / 2 Ohms = 0. 75 Amps?
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Hanif
question 1 - Total Resistance is 1. 02 Ohm.
question 2 -
R2 current is 0. 4Amp
R3 current is 1. 5Amp
R3 resistance is 4Ohm
Correct me if Im wrong pls
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question 1 - Total Resistance is 1. 02 Ohm.
question 2 -
R2 current is 0. 4Amp
R3 current is 1. 5Amp
R3 resistance is 4Ohm
Correct me if Im wrong pls
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Tony
When you're saying with these parallel circuits, are the multimeters just seeing what is being drawn form the battery so the voltage from the battery is 4. 5A drawn
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When you're saying with these parallel circuits, are the multimeters just seeing what is being drawn form the battery so the voltage from the battery is 4. 5A drawn
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education
if you own a good calculator just do (1/r1+1/r2)-1 instead of doing 1 over 1 over equivalent resistance. the -1 basicaly devides everything for you by 1
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if you own a good calculator just do (1/r1+1/r2)-1 instead of doing 1 over 1 over equivalent resistance. the -1 basicaly devides everything for you by 1
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AwesomerpYT
Hey, at 3: 42 if you knew only voltage (12V) you determine resistance by looking at the lamps description and the calculating the current right?
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Hey, at 3: 42 if you knew only voltage (12V) you determine resistance by looking at the lamps description and the calculating the current right?
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Arc
Lovely animations, and I liked that there was a mistake in the calculations, made me feel more confident, and know how to stick to my guns.
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Lovely animations, and I liked that there was a mistake in the calculations, made me feel more confident, and know how to stick to my guns.
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Trisha
0. 8+0. 5=1. 3 First, you should practice your Mathematics before you make calculations in videos. Your English Speaking Skill is fine.
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0. 8+0. 5=1. 3 First, you should practice your Mathematics before you make calculations in videos. Your English Speaking Skill is fine.
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Jbreeze
quick question? where is that 2Amps coming from? It says 3Amps on the voltmeter and total ohms is 12ohms. Can someone help me. Thanks
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quick question? where is that 2Amps coming from? It says 3Amps on the voltmeter and total ohms is 12ohms. Can someone help me. Thanks
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N3koChan
at 3: 21 you said there's 2 A of total current but the manometer show 3 A
at 8: 12 0. 8 amps + 0. 5 amps = 1. 3 amps
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at 3: 21 you said there's 2 A of total current but the manometer show 3 A
at 8: 12 0. 8 amps + 0. 5 amps = 1. 3 amps
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