# ZVS driver can output huge amount of current into it's LC tank, can we say it is like a LC band pass filter?

billrussell42 Of course it is a parallel LC, but it draws huge amount of current, it's impedance is very VERY low.

Too many people answer without really knowing what they talk about.

"In figure 9 no. At resonance the tank has high impedance so the input signal reaches RL"

You do realize figure 9 is a band PASS filter, it has extremelly low impedance, practically 0.

Only at resonant frequency, of course.

### 4 Answers

- 異域秦後人Lv 712 months agoFavorite Answer
NO ! BAND PASS FILTER SHORTS OUT THE SIGNALS WITHIN ITS BAND PASS FREQUENCIES. LC TANK CIRCUIT RESONATES AT A SPECIFIED FREQUENCY.

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- derframLv 712 months ago
What exactly are we talking about here? A self oscillating push-pull resonant power converter?

The 'tank' is a parallel network and if there is no secondary load, the current in the primary will be small. A load on the output will be reflected into the input and the appropriate amount of current will be induced in the primary network.

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- amania_rLv 712 months ago
In figure 9 no. At resonance the tank has high impedance so the input signal reaches RL

In figure 8, at resonance the LC has low impedance (let's say 0) so the current will be Vin/RL - not necessarily huge

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- billrussell42Lv 712 months ago
No, it's more like a parallel resonant circuit

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