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Input biasing and coupling calculations

I have a low frequency input signal 3-80 Hz that I am feeding into an inverting op-amp input. I am slightly confused as to what values I should choose for the following components - R3, C2, R4: The ...
0
votes
1answer
90 views

Would AC voltage damage the capacitor if using a low voltage rating capacitor?

So I have a circuit below: C1 is 6.3V rating electrolytic cap. V1 is 6VDC V2 is 2VRMS The DC voltage across C1 cap is 6V and I have 0.3V margin. Since the AC voltage at both terminal of the cap is ...
0
votes
2answers
313 views

Need help DC biasing an AC source

I am trying to simulate this circuit I saw here: However, when I simulate it, the "mid-point" does not behave like the blue line in the above picture. You can check the simulation here: Is the ...
7
votes
2answers
1k views

Are film capacitors affected by DC bias?

After looking around, I have found quite a few things about how DC bias reduces effective capacitance for a ceramic, or electrolytic capacitor, however nothing seems to talk about the effect on film ...
4
votes
1answer
4k views

Why does capacitor value changes when capacitor is DC biased?

I have seen ceramic capacitor value varying under various DC biased levels. Dc biased was a huge factor as capacitor value is reduced by 50% almost? Why?