The 1297 Real-Time Efficiency
computer allows a technician or engineer to quickly analyze the operation
of switching power supplies by observing efficiency as operating
parameters such as input voltage, output load or components (Such as
inductors) are modified. Efficiency is the quickest measure of the
overall performance of a switcher, low efficiency can point to underrated
inductors, high Vforward diodes, excessive switching losses and other
problems. A power supply could put out the correct voltage while at
the same time converting too much of your battery power into heat.
Intended for low voltage DC-DC
converters, this unit has selectable ranges for both input and output
voltage channels with galvanic isolation to allow for positive or negative
voltage measurements. Galvanic isolation and an internal amplifier
stage is provided for current measurement using 0.1 ohm sense resistors
using high or low side sensing. Higher currents can be accommodated
by the use of lower value sense resistors and as long as they are equal
for the input and output channels, the efficiency calculation will be
correct (Current an power must be scaled accordingly) .
Now you can sweep your design
at the bench in minutes over the whole input/output box. Want to see
how that new smaller inductor compares to the fat legacy one or that new
"Drop in" switcher compares with the old one? Plug them in and see! |