I found your videos yesterday and have been binge watching since. You are doing a great job and are really easy to learn from. I have ZERO experience with electronics and have always found the prospect of electrocution a turn off. Todays lesson was very simple: "Don't connect different voltage batteries in parallel." Hopefully this isn't a stupid question; What about different vvoltage batteries in series? I've never seen it as a battery user so maybe it causes a similar problem and maybe you'll cover it in one of these next videos in the series. Anyway, nothing but positive feedback from me! (not a charge joke).
So, connecting different voltage batteries in series isn't going to create a short circuit between two different voltages like connecting them in parallel does. Technically you can do it and (mathematically, at least) it is "safe." But in practice, as far as I know it's never done, for a couple reasons. One, different types of batteries also have different capacities and internal resistances (I think I cover internal resistance in another video in this series). So if you put a bunch of different batteries in series, one of them might die before the others - ideally you want the batteries all to drain at the same rate, then replace them all at once. Two, batteries come in all shapes and sizes, and it would be sort of weird to combine different batteries. For example, a AA battery is 1.5 volts and cylindrical. A 9 volt battery is 9 volts and rectangular. If you want 12 volts, mathematically you could combine one 9V battery with two AA batteries in series, but in practice you wouldn't do that because you'd need to design a weird battery holder to hold two different shape batteries, and because the 9V battery would drain faster than the two AA batteries. Glad you're enjoying the videos!
Why is it that when I have two battery’s in series discharging to a light. one battery drains faster then the other or uneven. How do you fix this issue?
If you start with two identical, new batteries in series, they should drain at the same rate because the current through them is the same. If you're using old batteries or different brands they may not drain at the same rate.
If connecting different voltage batteries in parallel creates a very high current (because of a small R value in I=V/R), how come connecting same voltage batteries in parallel doesn't also create a high current? Wouldn't those also have a small resistance that would create a high current according to ohm's law?
@@BenFinio That makes sense! Thanks so much for the reply. I am loving this series by the way. I studied computer science in college and am now getting into electronics as a hobby and this playlist is a gold mine and exactly what I needed. I hope more people are able to find this series, because it’s definitely somewhat of a hidden gem!
I did compsci too and thought I'd learn some electronics as it was always something I've wanted to do. :) Do you have any resources you would recommend or found useful?
for two different voltage batteries in parallel e.g. 1.5V and 9V each with an internal resistance of 2 ohms, which value for V and which value for R would be used to calculate the current?
Can you explain: 1) Why different voltage batteries will burn up in parallel but not series? 2) Also I’m so baffled why two batteries in series will have double voltage across them but same current. If we have a 5 volt battery with a 1 ohm resistor - the current in that circuit is 5 amp. But if we have a 10 volt battery and a 1 ohm resistor we have a 10 amp current. If this is the case then why would 2 5 volt batteries in series which is 10 v, with a 1 ohm resistor, not have a 10 amp current but actually a 5 amp current!?
I found your videos yesterday and have been binge watching since. You are doing a great job and are really easy to learn from. I have ZERO experience with electronics and have always found the prospect of electrocution a turn off. Todays lesson was very simple: "Don't connect different voltage batteries in parallel." Hopefully this isn't a stupid question; What about different vvoltage batteries in series? I've never seen it as a battery user so maybe it causes a similar problem and maybe you'll cover it in one of these next videos in the series. Anyway, nothing but positive feedback from me! (not a charge joke).
So, connecting different voltage batteries in series isn't going to create a short circuit between two different voltages like connecting them in parallel does. Technically you can do it and (mathematically, at least) it is "safe." But in practice, as far as I know it's never done, for a couple reasons. One, different types of batteries also have different capacities and internal resistances (I think I cover internal resistance in another video in this series). So if you put a bunch of different batteries in series, one of them might die before the others - ideally you want the batteries all to drain at the same rate, then replace them all at once. Two, batteries come in all shapes and sizes, and it would be sort of weird to combine different batteries. For example, a AA battery is 1.5 volts and cylindrical. A 9 volt battery is 9 volts and rectangular. If you want 12 volts, mathematically you could combine one 9V battery with two AA batteries in series, but in practice you wouldn't do that because you'd need to design a weird battery holder to hold two different shape batteries, and because the 9V battery would drain faster than the two AA batteries. Glad you're enjoying the videos!
Perfectly i got what im searched for ❤
What would be the Current Relation for the Series connection of different voltage batteries?
Why is it that when I have two battery’s in series discharging to a light. one battery drains faster then the other or uneven. How do you fix this issue?
If you start with two identical, new batteries in series, they should drain at the same rate because the current through them is the same. If you're using old batteries or different brands they may not drain at the same rate.
If connecting different voltage batteries in parallel creates a very high current (because of a small R value in I=V/R), how come connecting same voltage batteries in parallel doesn't also create a high current? Wouldn't those also have a small resistance that would create a high current according to ohm's law?
No, because if the batteries have the same voltage, then there is no voltage drop, so the V in I=V/R is zero, therefore I is zero.
@@BenFinio That makes sense! Thanks so much for the reply. I am loving this series by the way. I studied computer science in college and am now getting into electronics as a hobby and this playlist is a gold mine and exactly what I needed. I hope more people are able to find this series, because it’s definitely somewhat of a hidden gem!
I did compsci too and thought I'd learn some electronics as it was always something I've wanted to do. :) Do you have any resources you would recommend or found useful?
do the parallel have an example equation?
for two different voltage batteries in parallel e.g. 1.5V and 9V each with an internal resistance of 2 ohms, which value for V and which value for R would be used to calculate the current?
Don't put two batteries with different voltages in parallel! That will create a short circuit that will get dangerously hot.
Can you explain:
1)
Why different voltage batteries will burn up in parallel but not series?
2)
Also I’m so baffled why two batteries in series will have double voltage across them but same current. If we have a 5 volt battery with a 1 ohm resistor - the current in that circuit is 5 amp. But if we have a 10 volt battery and a 1 ohm resistor we have a 10 amp current. If this is the case then why would 2 5 volt batteries in series which is 10 v, with a 1 ohm resistor, not have a 10 amp current but actually a 5 amp current!?
Do thevenin equations
thank you
I was using a circuit simulator but connect batteries of the same kind and voltage in parallel no current is flowing in the circuit
what if the negative side is connected to the positive side
thanks for wasting my time!!!