Understanding the Capacitor Combination: C1, C2, and C3 Explained

[eurekameh]

http://imageshack.us/photo/my-images/266/unledzq.png/
Am I correct in thinking that C1 and C2 are in parallel, while C3 is in series with both C1 and C2, or their equivalent capacitor?

 

[Low-Q]

http://imageshack.us/photo/my-images/266/unledzq.png/
Am I correct in thinking that C1 and C2 are in parallel, while C3 is in series with both C1 and C2, or their equivalent capacitor?

Yes.
The result is:
1/C_tot = (1/(C1+C2)) + (1/C3)

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