Agilent Technologies 4294A Specifications download pdf (Page 83)

5-3. Transformer measurement

A transformer is one end-product of an inductor. So, the measurement techniques are the same as

for inductor measurement. Figure 5-14 shows a schematic with the key measurement parameters of

a transformer. A description of how to measure these parameters follows.

Primary inductance (L1) and secondary inductance (L2) can be measured directly by connecting the

instrument as shown in Figure 5-15. All other windings should be left open. Note that the induc-

tance measurement result includes the effects of capacitance. If the equivalent circuit analysis func-

tion of the Agilent’s impedance analyzer is used, the individual values for inductance, resistance,

and capacitance can be obtained.

Leakage inductance Obtain leakage inductance by shorting the secondary and measuring the induc-

tance of the primary as shown in Figure 5-16.

Figure 5-14. Transformer parameters Figure 5-15. Primary inductance measurement

Figure 5-16. Leakage inductance measurement

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Agilent Technologies 4294A Specifications Page 83