If you have ever done RF filters, the parallel LC resonator there has a lot of re-entrant frequencies (higher frequencies). The choke becomes a high impedance, but the cap becomes a low impedance.
And those frequencies are in the mid and high frequencies, where you are more likely to hear them).
The charging current through the inductance of the leads to the second cap develops a voltage.
You must control the ground loops, especially of the capacitor that follows the LC resonator.
Just my opinion.
And those frequencies are in the mid and high frequencies, where you are more likely to hear them).
The charging current through the inductance of the leads to the second cap develops a voltage.
You must control the ground loops, especially of the capacitor that follows the LC resonator.
Just my opinion.
I simulated the supply and tried resistors, but the ripple got worse.
I put 50uF/1H/50uF/1H/50uF current is 300mA.
The second choke eats quite a bit extra Voltage only 330V and 40 ohm higher output impedance.
Also the 90° phase shift is at resonance (20Hz) does not make sense when the input is a triangular wave, higher frequencies are closer to 180°
I put 50uF/1H/50uF/1H/50uF current is 300mA.
The second choke eats quite a bit extra Voltage only 330V and 40 ohm higher output impedance.
Also the 90° phase shift is at resonance (20Hz) does not make sense when the input is a triangular wave, higher frequencies are closer to 180°