Tektronix TCP300A, User Manual

Page: 59 / 82

Application Notes
You must observe the polarity of coil current to determine whether the test coil
has greater or fewer turns than the reference coil. The turns are calculated by
using the formula:
where N
2
is the number of turns in the test coil, N
1
is the number of turns in the
reference coil, I
m
is the measured coil current, and I
1
is the input current.
Power Measurement and Analysis Software
Power measurement software that is available for some Tektronix oscilloscopes
transform your current measurement system into a sophisticated analysis tool that
quickly measures and analyzes many different applications, such as:
Power dissipation at switching devices and magnetic components in switching
power supplies
Precompliance test for EN61000-3-2 standard
Power quality
Modulation analysis
After making the measurements, the software generates detailed test reports in
customizable formats. When the software is used with a Tektronix TDS5000
Series or TDS7054/TDS7104 digital phosphor oscilloscope and differential
voltage and current probes, it forms a complete measurement system for power
supply design and test.
TCPA300/400 Ampli fi ers and TCP300A/400 Series Current Probes User Manual 41