TINA/Spice: Amplifier Error

Novel,

This is a convergence error. When simulating the transient response choose any of the following options marked in Yellow.

Nikhil,

I know this way but also i couldn't use DC,AC Analysis,Noise Analysis and T&M tools.I get same error.

Dear Srikanth,

Thank you.It is working now.Normally the circuit work with another transistor models without 10Megaohm.It is working now with 10Mohm or a speaker 4-8ohm.If you confirm thats not effect my design i can use like that.

My Best

Dear Srikanth,

When i adjust potentiometer to adjust bias current there is no any voltage changing on R4 0,22ohm. I measure it with multimeter.

Dear Novel,

Thanks for confirming. I believe 10Meg Ohm is large enough to not materially impact simulation results in your application - so you can safely use it for your no-load simulations.

If you are using a smaller 4-8 Ohm load (representing speaker) you need not use this additional 10Meg resistor.

Best Regards,
Srikanth Pam | Online Design Tools

Dear Srikanth,

First question: When i adjust potentiometer to adjust bias current there is no any voltage changing on R4 0,22ohm. I measure it with multimeter.

Secondly: Steady State Solver analysis result like that.Are we need this analysis to test amplifiers performance? And the result seems not normal.Am i right and where must be problem you think?

Third: How we can measure output %THD , slew rate and frequency response ?

My Best