sine wave generator control

[keibbow]

Hello members of the forum,i have a little question, i generate pure sine wave using an op-amp with an output of 5v p.p then how will i reduce the amplitude to 3v p.p. Thank's

 

[andre_luis]

Due I´re already using an OpAmp, just recalculate it gain.

+++

 

[keibbow]

Thank's for the reply but recalculating the value can only change the frequency not the amplitute.

 

[klystron]

Please post your circuit diagram

 

[keibbow]

.thanks and here is the circute diagram.

 

[keibbow]

 

[FvM]

A square wave generator with a 2nd order low-pass is not actually what I would name a sine generator, but anyway. The square wave amplitude is always equal to power supply (minus residual voltages) so it can't be changed by design. Using an attenuator, e.g. R18, is the only way. Of course, the magnitude can be also attenuated before the filter. Why don't you simply adjust the output voltage by R18?

 

[keibbow]

Thanks for the reply Fvm,i try to use wein bridge sinewave oscilator but it does'nt work.

---------- Post added at 17:22 ---------- Previous post was at 17:20 ----------

or is their any simple sine wave oscilator i can use or any circute diagram if posible.