# The influence of capacitors and resistance in a BJT circuit

I solved the circuit and found these values for each one. But I wanted to know:

Which capacitor has more influence in the low frequency and in the amplification?

Does RE have impact in amplification?

• Welcome to SE EE. Since you "solved" the circuit already, you can easily re-calculate what happens if you for example double the value of $R_E$. Does doubling $R_E$ impact the DC bias solution? So does gm change? – Bimpelrekkie Jun 11 at 7:02
• I only had some values that were missing, so firstly I solved them, and now I wanted some more information(the questions I asked). – Enn Jun 11 at 9:20
• It is a relatively simple task to find the various 3-dB corner frequencies (wi) of the three RC combinations. You only have to compute the corresponding time constants (TAU)i=1/wi. The TAU values are the products of Ci with the connected R combinations. – LvW Jun 11 at 9:56