Application Notes
You must observ
e the polarity of coil current to determine whether the test coil
has greater or few er 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 Amplifiers and TCP300A/400 Series Current Probes User Manual 41
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