Hoefer PS300B Manual De Usuario página 15

Fig 3. Power supply crossover.
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p6
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Voltage limit
Current limit
Voltage limit
Current limit
There are some conditions when the power supply
will operate at the upper limit of 90 W of constant
power. When this occurs, both the constant V and the
constant mA lights will be lit at the same time.
Crossover from
constant A to constant V
resistance increasing over time
Crossover from
constant V to constant A
resistance decreasing over time
voltage
current
voltage
current