belgaiba
Newbie level 4
Hi, I am testing a WPT circuit.
The input sinusoidal signal of the primary coil is from the function generator with Vrms=7,9V and frequency 130KHz.
I am using inductive coupling method with a cap in parallel with the Tx and Rx coils.
When I have the distance between two coils lower than 2cm and without any load on the receiver coil, the voltage in Rx is higher than the Tx coil.
The results are;
Distance VrmsRx
1cm 15,27V
2cm 8,81V
For distances higher than 2cm the Rx voltage is less than Vpp in Tx and make sence to me.
I don't understand why the voltage on Rx can be higher than Tx voltage if I built the inductors with the same diameter and number of turns.
Thank you!
The input sinusoidal signal of the primary coil is from the function generator with Vrms=7,9V and frequency 130KHz.
I am using inductive coupling method with a cap in parallel with the Tx and Rx coils.
When I have the distance between two coils lower than 2cm and without any load on the receiver coil, the voltage in Rx is higher than the Tx coil.
The results are;
Distance VrmsRx
1cm 15,27V
2cm 8,81V
For distances higher than 2cm the Rx voltage is less than Vpp in Tx and make sence to me.
I don't understand why the voltage on Rx can be higher than Tx voltage if I built the inductors with the same diameter and number of turns.
Thank you!