LC resonance

msddw

LC resonance [Copy link]

In Figure 8.1.16 of Tongshi Bai Model Electronics, 4th edition, P413, R is the total loss, but where is the load RL? Wasn't there a load RL on the N3 coil originally?

maychang

I didn't read the book carefully enough.

The book has already said: R is the total loss including LC resonant circuit, load, etc.

maychang

Not only the resistance, but also the inductance of winding N3 should be converted to the primary side. Note this sentence: "L1 is the equivalent inductance converted to the primary side considering the N3 loop parameters".

msddw

R includes: RL converted to the equivalent resistance of the primary side, the loss of the LC resonant network, and the loss of N3. Is that right, teacher?

maychang

msddw posted on 2019-6-14 16:55 R includes: RL converted to the equivalent resistance of the primary side, the loss of the LC resonant network, and the loss of N3. Is that right, teacher?

almost.

In short, all losses in the circuit are taken into account.