menewbie
Junior Member level 1
Hi, is there a circuit that can invert the sign of only positive signal? For example, if the input is 3V then the output is -3V and if input is -2V then the output is -2V.
Also, how to connect the output of a voltage divider to an integrator??
I am using 10p capacitors to divide the voltage but when I connect it to the integrator, which consists of an op-amp, a resistor(1k) and a capacitor(10u), the output of the voltage divider becomes 0V. I know I an impedance transformer can solve this problem. However, I am not sure what are the right values for the input resistance and the output resistance.
Also, how to connect the output of a voltage divider to an integrator??
I am using 10p capacitors to divide the voltage but when I connect it to the integrator, which consists of an op-amp, a resistor(1k) and a capacitor(10u), the output of the voltage divider becomes 0V. I know I an impedance transformer can solve this problem. However, I am not sure what are the right values for the input resistance and the output resistance.