[SOLVED] Problem with comparator that converts sine to square wave?

[elec_eng]

Comparator Problem

Hi.

In the pic below I have a comparator circuit which I want to use to convert a sine wave into a square wave. As you can see, the circuit converts the sine wave and gives the resulting square wave the same frequency. But the square wave has a larger amplitude.

What is causing this?

What can i do to fix it?


Thanks for the help.

 

[Yahia Muhammad]

Re: Comparator Problem

any thing larger than the comparison threshold will give output equal to the supply voltage
there is nothin wrong i guess

 

[elec_eng]

Re: Comparator Problem

any thing larger than the comparison threshold will give output equal to the supply voltage
there is nothin wrong i guess

What is a "comparison threshold"?

 

[medra]

Re: Comparator Problem

hi
the comparator gives 12 or -12 v as an output, clearly the supply voltage.
if u like to have max voltage as the sine wave change the sine wave to be 24 p-p

 

[Yahia Muhammad]

Re: Comparator Problem

the comparison threshold is the level that u compare the signal to it
like
if signal> comparison threshold
vo=1
else
vo=0

here 1 equivalent to +12
and 0 equivalent to -12

 

[IBO]

Re: Comparator Problem

ur o/p threshold depends on ur supply voltage sources (power delivered).
it''s caleed an opamp an amplifier.[/u]

 

[elec_eng]

Re: Comparator Problem

Thanks guys.