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I have built the following ZVS driver: enter image description here

I am using this circuit at a resonance frequency of 150kHz.

My hope is to be able to modify this circuit for wireless power transmission. With that being said, I will only be applying a maximum of 20V DC to this circuit at the input. From testing the circuit with that voltage, the output power is very low, barely turning on a small LED light. Can anyone request any ideas for changes or modifications to achieve better output power?

I am new to building circuits so any help would be appreciated.

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  • \$\begingroup\$ What current was it drawing from the 20V supply? \$\endgroup\$ – user_1818839 Apr 2 '20 at 17:14
  • \$\begingroup\$ @BrianDrummond 69mA with no load and 70mA with load \$\endgroup\$ – cvannor Apr 2 '20 at 17:30
  • \$\begingroup\$ Looks like you need to improve coupling between the transmitter and receiver. \$\endgroup\$ – user_1818839 Apr 2 '20 at 17:32
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    \$\begingroup\$ You need to show the precise circuit and coupling method you chose. \$\endgroup\$ – Andy aka Apr 2 '20 at 18:04

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