amplitude divisor

[jovabiot]

i have an ac signal and i want an amplitude divisor but with a resistor i add an offset . how can i divide the amplitud without an offset?? thanks

 

[Nigel Goodwin]

i have an ac signal and i want an amplitude divisor but with a resistor i add an offset . how can i divide the amplitud without an offset?? thanks

You use a potential divider - I don't quite see what you mean by an 'offset', perhaps you had better explain further!.

 

[jovabiot]

divisor

my initial signal in from -1 to 1 volt, and with two resistors i do an amplitude divisor but from 0 to 500mV, and i want from -250mV to 250mV. how i do it?

 

[Nigel Goodwin]

Re: divisor

my initial signal in from -1 to 1 volt, and with two resistors i do an amplitude divisor but from 0 to 500mV, and i want from -250mV to 250mV. how i do it?

A simple two resistor potential divider will do exactly that, if the input is positive the output will be positive, is the input is negative the output will be negative. With a resistor ratio of 3 to 1, and an input of -1V to +1V, the output will be -250mV to +250mV.