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Can I decrease voltage to get higher amperage?
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I've been wondering in a question that I need an answer to, as you might know I am only 15 years old, and I love electronics very much, it's my daily hobby now for about 3 years, and I took the decision to be an electronic engineer, but I am still in the beginning , in need for some body to answer me.
My question is : if I have for example a battery that outputs 10 volts but with a maximum of 0.5 Amp if I took the output of the battery and entered it in a buck converter to get 5v will I get the same 0.5 amp at 5v or I will get 1 amp ?
In my small knowledge what I know that the watts should be the same so 10 * 0.5 = 5 watts, so 5 * 1 = 5 watts, Is this true or it's only theoritical ? and is there any something wrong in my calculations ?
Thanks is advance ...
voltage buck amperage
asked 8 hours ago
Shams El-DeenShams El-Deen
1627 bronze badges
$endgroup$
add a comment
|
$begingroup$
I've been wondering in a question that I need an answer to, as you might know I am only 15 years old, and I love electronics very much, it's my daily hobby now for about 3 years, and I took the decision to be an electronic engineer, but I am still in the beginning , in need for some body to answer me.
My question is : if I have for example a battery that outputs 10 volts but with a maximum of 0.5 Amp if I took the output of the battery and entered it in a buck converter to get 5v will I get the same 0.5 amp at 5v or I will get 1 amp ?
In my small knowledge what I know that the watts should be the same so 10 * 0.5 = 5 watts, so 5 * 1 = 5 watts, Is this true or it's only theoritical ? and is there any something wrong in my calculations ?
Thanks is advance ...
voltage buck amperage
asked 8 hours ago
Shams El-DeenShams El-Deen
1627 bronze badges
$endgroup$
$begingroup$
A battery voltage usually varies some over its active life. For example, a LiPo might start with $4.2:text{V}$ but end with $3.7:text{V}$ when it needs to be recharged, again. Also the current "maximum" is a "compliance" value. This doesn't mean you have to always use that much. It just means you can get up to that range and stay within the voltage range specifications, consistent with the remaining available energy. A buck converter will need to operate well over the source range of the battery and the current required from the battery will vary as the battery voltage changes.
$endgroup$
– jonk
6 hours ago
add a comment
|
$begingroup$
I've been wondering in a question that I need an answer to, as you might know I am only 15 years old, and I love electronics very much, it's my daily hobby now for about 3 years, and I took the decision to be an electronic engineer, but I am still in the beginning , in need for some body to answer me.
My question is : if I have for example a battery that outputs 10 volts but with a maximum of 0.5 Amp if I took the output of the battery and entered it in a buck converter to get 5v will I get the same 0.5 amp at 5v or I will get 1 amp ?
In my small knowledge what I know that the watts should be the same so 10 * 0.5 = 5 watts, so 5 * 1 = 5 watts, Is this true or it's only theoritical ? and is there any something wrong in my calculations ?
Thanks is advance ...
voltage buck amperage
asked 8 hours ago
Shams El-DeenShams El-Deen
1627 bronze badges
$endgroup$
I've been wondering in a question that I need an answer to, as you might know I am only 15 years old, and I love electronics very much, it's my daily hobby now for about 3 years, and I took the decision to be an electronic engineer, but I am still in the beginning , in need for some body to answer me.
My question is : if I have for example a battery that outputs 10 volts but with a maximum of 0.5 Amp if I took the output of the battery and entered it in a buck converter to get 5v will I get the same 0.5 amp at 5v or I will get 1 amp ?
In my small knowledge what I know that the watts should be the same so 10 * 0.5 = 5 watts, so 5 * 1 = 5 watts, Is this true or it's only theoritical ? and is there any something wrong in my calculations ?
Thanks is advance ...
voltage buck amperage
voltage buck amperage
asked 8 hours ago
Shams El-DeenShams El-Deen
1627 bronze badges
asked 8 hours ago
Shams El-DeenShams El-Deen
1627 bronze badges
asked 8 hours ago
Shams El-DeenShams El-Deen
1627 bronze badges
asked 8 hours ago
Shams El-DeenShams El-Deen
1627 bronze badges
asked 8 hours ago
Shams El-DeenShams El-Deen
1627 bronze badges
1627 bronze badges
$begingroup$
A battery voltage usually varies some over its active life. For example, a LiPo might start with $4.2:text{V}$ but end with $3.7:text{V}$ when it needs to be recharged, again. Also the current "maximum" is a "compliance" value. This doesn't mean you have to always use that much. It just means you can get up to that range and stay within the voltage range specifications, consistent with the remaining available energy. A buck converter will need to operate well over the source range of the battery and the current required from the battery will vary as the battery voltage changes.
$endgroup$
– jonk
6 hours ago
add a comment
|
$begingroup$
A battery voltage usually varies some over its active life. For example, a LiPo might start with $4.2:text{V}$ but end with $3.7:text{V}$ when it needs to be recharged, again. Also the current "maximum" is a "compliance" value. This doesn't mean you have to always use that much. It just means you can get up to that range and stay within the voltage range specifications, consistent with the remaining available energy. A buck converter will need to operate well over the source range of the battery and the current required from the battery will vary as the battery voltage changes.
$endgroup$
– jonk
6 hours ago
$begingroup$
A battery voltage usually varies some over its active life. For example, a LiPo might start with $4.2:text{V}$ but end with $3.7:text{V}$ when it needs to be recharged, again. Also the current "maximum" is a "compliance" value. This doesn't mean you have to always use that much. It just means you can get up to that range and stay within the voltage range specifications, consistent with the remaining available energy. A buck converter will need to operate well over the source range of the battery and the current required from the battery will vary as the battery voltage changes.
$endgroup$
– jonk
6 hours ago
$begingroup$
A battery voltage usually varies some over its active life. For example, a LiPo might start with $4.2:text{V}$ but end with $3.7:text{V}$ when it needs to be recharged, again. Also the current "maximum" is a "compliance" value. This doesn't mean you have to always use that much. It just means you can get up to that range and stay within the voltage range specifications, consistent with the remaining available energy. A buck converter will need to operate well over the source range of the battery and the current required from the battery will vary as the battery voltage changes.
$endgroup$
– jonk
6 hours ago
add a comment
|
1 Answer
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$begingroup$
Assuming a buck converter that's 100% efficient, yes, you will be able to draw 1A from the output.
In practice, buck converters can be very efficient, often over 90%, so you'll still be able to get around 900mA output, which is rather better than the 500mA you'd get with a linear regulator.
An important part of the buck converter system is its input filter capacitor, which provides pulses of the high output current to the converter, while drawing the continuous average lower current from the input.
answered 8 hours ago
Neil_UKNeil_UK
87.9k2 gold badges90 silver badges203 bronze badges
$endgroup$
$begingroup$
Theses things can also be applied to solar panels also right ?
$endgroup$
– Shams El-Deen
1 hour ago
$begingroup$
@ShamsEl-Deen Certainly. Solar panels can have quite a wide output voltage range, so make sure your converter's input is specified to cover the whole range, not just the nominal panel voltage.
$endgroup$
– Neil_UK
52 mins ago
add a comment
|
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1 Answer
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$begingroup$
Assuming a buck converter that's 100% efficient, yes, you will be able to draw 1A from the output.
In practice, buck converters can be very efficient, often over 90%, so you'll still be able to get around 900mA output, which is rather better than the 500mA you'd get with a linear regulator.
An important part of the buck converter system is its input filter capacitor, which provides pulses of the high output current to the converter, while drawing the continuous average lower current from the input.
answered 8 hours ago
Neil_UKNeil_UK
87.9k2 gold badges90 silver badges203 bronze badges
$endgroup$
$begingroup$
Theses things can also be applied to solar panels also right ?
$endgroup$
– Shams El-Deen
1 hour ago
$begingroup$
@ShamsEl-Deen Certainly. Solar panels can have quite a wide output voltage range, so make sure your converter's input is specified to cover the whole range, not just the nominal panel voltage.
$endgroup$
– Neil_UK
52 mins ago
add a comment
|
$begingroup$
Assuming a buck converter that's 100% efficient, yes, you will be able to draw 1A from the output.
In practice, buck converters can be very efficient, often over 90%, so you'll still be able to get around 900mA output, which is rather better than the 500mA you'd get with a linear regulator.
An important part of the buck converter system is its input filter capacitor, which provides pulses of the high output current to the converter, while drawing the continuous average lower current from the input.
answered 8 hours ago
Neil_UKNeil_UK
87.9k2 gold badges90 silver badges203 bronze badges
$endgroup$
$begingroup$
Theses things can also be applied to solar panels also right ?
$endgroup$
– Shams El-Deen
1 hour ago
$begingroup$
@ShamsEl-Deen Certainly. Solar panels can have quite a wide output voltage range, so make sure your converter's input is specified to cover the whole range, not just the nominal panel voltage.
$endgroup$
– Neil_UK
52 mins ago
add a comment
|
$begingroup$
Assuming a buck converter that's 100% efficient, yes, you will be able to draw 1A from the output.
In practice, buck converters can be very efficient, often over 90%, so you'll still be able to get around 900mA output, which is rather better than the 500mA you'd get with a linear regulator.
An important part of the buck converter system is its input filter capacitor, which provides pulses of the high output current to the converter, while drawing the continuous average lower current from the input.
answered 8 hours ago
Neil_UKNeil_UK
87.9k2 gold badges90 silver badges203 bronze badges
$endgroup$
Assuming a buck converter that's 100% efficient, yes, you will be able to draw 1A from the output.
In practice, buck converters can be very efficient, often over 90%, so you'll still be able to get around 900mA output, which is rather better than the 500mA you'd get with a linear regulator.
An important part of the buck converter system is its input filter capacitor, which provides pulses of the high output current to the converter, while drawing the continuous average lower current from the input.
answered 8 hours ago
Neil_UKNeil_UK
87.9k2 gold badges90 silver badges203 bronze badges
answered 8 hours ago
Neil_UKNeil_UK
87.9k2 gold badges90 silver badges203 bronze badges
answered 8 hours ago
Neil_UKNeil_UK
87.9k2 gold badges90 silver badges203 bronze badges
answered 8 hours ago
Neil_UKNeil_UK
87.9k2 gold badges90 silver badges203 bronze badges
87.9k2 gold badges90 silver badges203 bronze badges
$begingroup$
Theses things can also be applied to solar panels also right ?
$endgroup$
– Shams El-Deen
1 hour ago
$begingroup$
@ShamsEl-Deen Certainly. Solar panels can have quite a wide output voltage range, so make sure your converter's input is specified to cover the whole range, not just the nominal panel voltage.
$endgroup$
– Neil_UK
52 mins ago
add a comment
|
$begingroup$
Theses things can also be applied to solar panels also right ?
$endgroup$
– Shams El-Deen
1 hour ago
$begingroup$
@ShamsEl-Deen Certainly. Solar panels can have quite a wide output voltage range, so make sure your converter's input is specified to cover the whole range, not just the nominal panel voltage.
$endgroup$
– Neil_UK
52 mins ago
$begingroup$
Theses things can also be applied to solar panels also right ?
$endgroup$
– Shams El-Deen
1 hour ago
$begingroup$
Theses things can also be applied to solar panels also right ?
$endgroup$
– Shams El-Deen
1 hour ago
$begingroup$
@ShamsEl-Deen Certainly. Solar panels can have quite a wide output voltage range, so make sure your converter's input is specified to cover the whole range, not just the nominal panel voltage.
$endgroup$
– Neil_UK
52 mins ago
$begingroup$
@ShamsEl-Deen Certainly. Solar panels can have quite a wide output voltage range, so make sure your converter's input is specified to cover the whole range, not just the nominal panel voltage.
$endgroup$
– Neil_UK
52 mins ago
add a comment
|
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A battery voltage usually varies some over its active life. For example, a LiPo might start with $4.2:text{V}$ but end with $3.7:text{V}$ when it needs to be recharged, again. Also the current "maximum" is a "compliance" value. This doesn't mean you have to always use that much. It just means you can get up to that range and stay within the voltage range specifications, consistent with the remaining available energy. A buck converter will need to operate well over the source range of the battery and the current required from the battery will vary as the battery voltage changes.
$endgroup$
– jonk
6 hours ago