voltage regulator

[aashish]

I have a current sensor which gives 0 to 5 volt output. I want to convert it to -1 to 1 v. I have a 230 V AC line supply.<p>Presntly I am using a adder and amplifier for the conversion using opamp. But opamp require both positive and negative supply. I cant use transformer as it make the the circuit big which i dont want.<p>I got a circuit for conversion of 230v AC to +5 V. But i had problem in converting it to -5V.<p>Please give me suggestion how can i convert 0 to 5 v to -1 to 1v.<p>Thank You
Ashish Kumar Agarwal