tl082 is making error..but instead 3288rt does not make error?

[islamabadkkkkk]

follwing i have attched to schemetics for audio amplifer..when i use 3288rt ..it does not give any error..so i need information about 3288rt??

secondly whn i use tl082 instead of 3288rt...it gives error..i have attched both the circuits ,wth both op amp separetly..please chechk it and reply why the circuit with titile ""tl082""gives error????

i shall be very thnkful to u...

[JasonF]

The TL082 model uses the visible voltage rails on the schematic, and as you have inverted the OPAMP you have VS+ connecting to -12V and VS- connecting to +12V. If you correct that it should simulate correctly.

The 3288RT does not model the voltage rails so that is why it is not giving the error, the voltage rails do nothing in this situation so having them set backwards will not cause the error as it does in the situation above.

Regards,

Jason 

[Mahmoud_W]

Hi,

You need to reverse the the positive and negative bias connections of the opamps and your circuit should work fine (pin4 -Vcc, pin8 is +Vcc)

It is also helpful to use on page connectors to clean-up your schematic and have less overlapped wires.

Hope this helps,

Mahmoud W

National Instruments

[islamabadkkkkk]

thanx alot 4 replying....