40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log  Not logged in ELOG logo
Message ID: 2263     Entry time: Fri Nov 13 05:03:09 2009
Author: kiwamu 
Type: Update 
Category: Electronics 
Subject: multi-resonant EOM --- input impedance of LC tank ---- 

I measured the input impedance of the LC tank circuit with the transformer. The result is attached.

It looks interesting because the input impedance is almost dominated

by the primary coil of the transformer with inductance of 75nH (see attachment 1).

The impedance at the resonance is ~100 [Ohm], I think this number is quite reasonable because I expected that as 93 [Ohm]


Note that the input impedance can be derived as follower;

(input impedance) = L1 + Z/n^2.

Where L1 is the inductance of the primary coil, Z is the load in the secondary loop and n is the turn ratio.


I think now I am getting ready to enter the next phase \(^o^)/

Attachment 1: input_impedance.png  113 kB  | Hide | Hide all
Attachment 2: input_impedance2.png  104 kB  | Hide | Hide all
ELOG V3.1.3-