Rthevenin and Vthevenin of the circuit

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Hi
Can anyone tell me how to find the Vthevenin and Rthevenin of the following circuit?


Thanks
 

I assume you want Thevenin between the 2 terminals at the right.

The out of the Graetz briedge is like a simlpe AC source, so just change that Graetz briedge with a AC source and then is easy.

The only stuff is to find that analytic expresion for the AC source.
 
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Do you know how to simply calculate the voltage and current at the output? Like this:
 

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Thanks guys for your replies
Actually the output voltage across 5k will be fed into microcontroller's analog pin.
Below is the circuit of microcontroller analog pin. and i want to know the value of "Rs" in my circuit, in order to calculate the A/D acquisition Time.

Thats why i am willing to calculate the Rth and Vth of the circuit.

Hope you guys understand what i wanna ask.
 

The 5k resistor is a potentiometer so its value will probably much less than 5k ohms. It is in parallel with the 1.5k resistor so their total value is much less than 1.5k ohms.
 

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