#### billano786

##### Super Member

**strange LC phenomenon**

I designed a simple series tuned circuit comprising of L & C. The value of L=0.17mh and C= 10uF. The resonant frequency comes close to 3.3kHZ.

The dc resistance of the coil is around 5 milli ohms. I am tuning the circuit from a function generator + power amp connected to LC circuit via an impedance matching transformer (0.5 ohms secondary).

I am observing a strange phenomenon. The current at resonant frequency is through LC circuit is around 1A(RMS) and voltage developed across LC circuit is 552 mV (RMS) telling me that the impedance of LC circuit is around 555 milli ohms. The input voltage to primary of impedance matching transformer is 3.3V

Can some one explain the reason behind this and how to reduce this impedance?