Good evening, I'm new to the forum, I'm writing here on this issue about the LM723 regulator because I have the same problem manipulating the voltage but not the current, I'm designing a voltage regulation source at 15V but I want to limit the current to 1A . In the images I show the diagram of the datasheet and another one that I made in proteus and simulate it.
I am based on the data sheet of LM723, to calculate the voltage at 15V use two resistors, R1 = 7.87 KΩ, R2 = 7.15KΩ, also using a voltage Reference Vref = 7.15V and applying the following equation:
Vout= (Vref)(R1+R2/R2)
Vout = (7.15v)(7.87+7.15/t.15)
Vout= 15.
But my question is the following, since I want a current of 1A and Vsense = 0.7 V, in the data sheet it tells us that the current limit is given by the following equation:
Ilimit = Vsense/Rsc
Then clearing we have:
Rsc= Vsense/Ilimit
And replacing values has a resistance of 0.70Ω, but because when simulating it in software proteus does not give those currents and gives me strange values in I1 and I2, is that my doubt?
And last thing, replace the 2N4898 transistor with a 2n3055 because the software does not handle that transistor.
I hope you woud help me with this question or give me some recommendations.
I am based on the data sheet of LM723, to calculate the voltage at 15V use two resistors, R1 = 7.87 KΩ, R2 = 7.15KΩ, also using a voltage Reference Vref = 7.15V and applying the following equation:
Vout= (Vref)(R1+R2/R2)
Vout = (7.15v)(7.87+7.15/t.15)
Vout= 15.
But my question is the following, since I want a current of 1A and Vsense = 0.7 V, in the data sheet it tells us that the current limit is given by the following equation:
Ilimit = Vsense/Rsc
Then clearing we have:
Rsc= Vsense/Ilimit
And replacing values has a resistance of 0.70Ω, but because when simulating it in software proteus does not give those currents and gives me strange values in I1 and I2, is that my doubt?
And last thing, replace the 2N4898 transistor with a 2n3055 because the software does not handle that transistor.
I hope you woud help me with this question or give me some recommendations.
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