In the circuit test, it is found that the gain will increase when the input signal frequency is lower or higher. What is the situation?
Hisahiro.Kasahara 发表于 June 23, 2020
The role of each capacitor in the circuit, some in the low pass, some in the high pass, uneven represents capacitance, resistance parameters are not well matched
Jason 发表于 June 23, 2020
Normally it's supposed to attenuate at low frequencies and high frequencies, but this circuit is going up in gain. What's wrong
Hisahiro.Kasahara 发表于 June 23, 2020
A C3 makes a high pass
Negin.Jafaripour 发表于 June 23, 2020
How can I increase the damping factor? There's a spike when you test a high pass
Jessica 发表于 June 23, 2020
You can't do pre-input like this. Check out how other people design pre-input.The input processing capacitance should be removed and the resistance voltage ratio should be used to improve the current effect.
