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JYelton
JYelton
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I need to design a current limiter for a circuit. I haven't started to design it so I cannot show the schematics, but I'lI'll try to explain it.

It consists just in 2 light sensors. These sensors send a value to an MCU. The supply voltage is 12V but is lowered to 5V for the electronics. The important thing is here:

Depending on the values of the sensors (This corresponds to de programmable part of the MCU) I'll need to have a -1,.5V, 0V or 1,.5V output value. This is, -1,.5V and 1,.5V will supply the load, and 0V just wontwon't do nothinganything. The maximunmaximum Amperes value must be around 200mA or a bit lower.

So, I ask if you know any component-circuit that could suit this requirements.

UPDATE --

According to the comentscomments, I'll update the post with few more data.

The functionality must be like, if sensor1<sensor1 < sensor2 then output is -15V, and if sensor1>sensor2sensor1 > sensor2 output 1,.5V.

But I still have some things in the air that I need to define:

  • I could use a voltage regulator to low the voltage from 5V to 1,.5V, but then, I'll need to define how I generate the negative voltage.
  • I need to set how the MCU tells if the output is negative or positive
  • I need to define the current limiter. I found components like this, but this one has reverse-voltage protection so maybe for this purpose is not the best option

I need to design a current limiter for a circuit. I haven't started to design it so I cannot show the schematics, but I'l try to explain it.

It consists just in 2 light sensors. These sensors send a value to an MCU. The supply voltage is 12V but is lowered to 5V for the electronics. The important thing is here:

Depending on the values of the sensors (This corresponds to de programmable part of the MCU) I'll need to have a -1,5V, 0V or 1,5V output value. This is, -1,5V and 1,5V will supply the load, and 0V just wont do nothing. The maximun Amperes value must be around 200mA or a bit lower.

So, I ask if you know any component-circuit that could suit this requirements.

UPDATE --

According to the coments, I'll update the post with few more data.

The functionality must be like, if sensor1< sensor2 then output is -15V, and if sensor1>sensor2 output 1,5V.

But I still have some things in the air that I need to define:

  • I could use a voltage regulator to low the voltage from 5V to 1,5V, but then, I'll need to define how I generate the negative voltage.
  • I need to set how the MCU tells if the output is negative or positive
  • I need to define the current limiter. I found components like this, but this one has reverse-voltage protection so maybe for this purpose is not the best option

I need to design a current limiter for a circuit. I haven't started to design it so I cannot show the schematics, but I'll try to explain it.

It consists just in 2 light sensors. These sensors send a value to an MCU. The supply voltage is 12V but is lowered to 5V for the electronics. The important thing is here:

Depending on the values of the sensors (This corresponds to de programmable part of the MCU) I'll need to have a -1.5V, 0V or 1.5V output value. This is, -1.5V and 1.5V will supply the load, and 0V just won't do anything. The maximum Amperes value must be around 200mA or a bit lower.

So, I ask if you know any component-circuit that could suit this requirements.

UPDATE --

According to the comments, I'll update the post with few more data.

The functionality must be like, if sensor1 < sensor2 then output is -15V, and if sensor1 > sensor2 output 1.5V.

But I still have some things in the air that I need to define:

  • I could use a voltage regulator to low the voltage from 5V to 1.5V, but then, I'll need to define how I generate the negative voltage.
  • I need to set how the MCU tells if the output is negative or positive
  • I need to define the current limiter. I found components like this, but this one has reverse-voltage protection so maybe for this purpose is not the best option
added 710 characters in body
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masmic
masmic
  • 197
  • 7

I need to design a current limiter for a circuit. I haven't started to design it so I cannot show the schematics, but I'l try to explain it.

It consists just in 2 light sensors. These sensors send a value to an MCU. The supply voltage is 12V but is lowered to 5V for the electronics. The important thing is here:

Depending on the values of the sensors (This corresponds to de programmable part of the MCU) I'll need to have a -1,5V, 0V or 1,5V output value. This is, -1,5V and 1,5V will supply the load, and 0V just wont do nothing. The maximun Amperes value must be around 200mA or a bit lower.

So, I ask if you know any component-circuit that could suit this requirements.

UPDATE --

According to the coments, I'll update the post with few more data.

The functionality must be like, if sensor1< sensor2 then output is -15V, and if sensor1>sensor2 output 1,5V.

But I still have some things in the air that I need to define:

  • I could use a voltage regulator to low the voltage from 5V to 1,5V, but then, I'll need to define how I generate the negative voltage.
  • I need to set how the MCU tells if the output is negative or positive
  • I need to define the current limiter. I found components like this, but this one has reverse-voltage protection so maybe for this purpose is not the best option

I need to design a current limiter for a circuit. I haven't started to design it so I cannot show the schematics, but I'l try to explain it.

It consists just in 2 light sensors. These sensors send a value to an MCU. The supply voltage is 12V but is lowered to 5V for the electronics. The important thing is here:

Depending on the values of the sensors (This corresponds to de programmable part of the MCU) I'll need to have a -1,5V, 0V or 1,5V output value. This is, -1,5V and 1,5V will supply the load, and 0V just wont do nothing. The maximun Amperes value must be around 200mA or a bit lower.

So, I ask if you know any component-circuit that could suit this requirements.

I need to design a current limiter for a circuit. I haven't started to design it so I cannot show the schematics, but I'l try to explain it.

It consists just in 2 light sensors. These sensors send a value to an MCU. The supply voltage is 12V but is lowered to 5V for the electronics. The important thing is here:

Depending on the values of the sensors (This corresponds to de programmable part of the MCU) I'll need to have a -1,5V, 0V or 1,5V output value. This is, -1,5V and 1,5V will supply the load, and 0V just wont do nothing. The maximun Amperes value must be around 200mA or a bit lower.

So, I ask if you know any component-circuit that could suit this requirements.

UPDATE --

According to the coments, I'll update the post with few more data.

The functionality must be like, if sensor1< sensor2 then output is -15V, and if sensor1>sensor2 output 1,5V.

But I still have some things in the air that I need to define:

  • I could use a voltage regulator to low the voltage from 5V to 1,5V, but then, I'll need to define how I generate the negative voltage.
  • I need to set how the MCU tells if the output is negative or positive
  • I need to define the current limiter. I found components like this, but this one has reverse-voltage protection so maybe for this purpose is not the best option
Tweeted twitter.com/#!/StackElectronix/status/463612131380711424
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masmic
masmic
  • 197
  • 7

Current limiter for fixed voltage output

I need to design a current limiter for a circuit. I haven't started to design it so I cannot show the schematics, but I'l try to explain it.

It consists just in 2 light sensors. These sensors send a value to an MCU. The supply voltage is 12V but is lowered to 5V for the electronics. The important thing is here:

Depending on the values of the sensors (This corresponds to de programmable part of the MCU) I'll need to have a -1,5V, 0V or 1,5V output value. This is, -1,5V and 1,5V will supply the load, and 0V just wont do nothing. The maximun Amperes value must be around 200mA or a bit lower.

So, I ask if you know any component-circuit that could suit this requirements.