I am using a 6032A power supply, controlled by GPIB. With the supply cold, when I program it to +35V with 300mA current limit, the rise time is about 400ms. But then after using the supply to source 35V and 15 Amps for an hour, when I shut it down to 0V and program it back to +35V with 300mA current limit again, it takes over one second to get back to +35V.
Is it normal for the rise time of this power supply to be much slower when it is warm, vs. cold? Or is this possibly a sign that the power supply is failing?
I understand from another thread that the rise time will be relatively slow with the current limit set at 300mA. But why would it be even slower when the supply is warmed up?
Thanks!
Is it normal for the rise time of this power supply to be much slower when it is warm, vs. cold? Or is this possibly a sign that the power supply is failing?
I understand from another thread that the rise time will be relatively slow with the current limit set at 300mA. But why would it be even slower when the supply is warmed up?
Thanks!
Despite its appearance, technogically, this is a rather old supply; much of its control circuitry is analog in nature. As such, small, internal thermal changes & aging drifts will be readily apparent, especially during operation close to zero (volts or amps), especially when "cold" or during changes in output loading.
Being analog, the product will often appear to function "correctly" even if calibration is required, however, operatiion near zero could suffer dramatically. When was your 6032A last calibrated; how old is it?
Additionally, the "down programming" response time for the 6032A is only specified to a level of 2 volts, not zero. Also, this product's response time is not specified when used in Constant Current operation.
(FYI: 0.3A operation, a 50A product might not be the choice of products.)
Regards,
PeterW