Products > Test Equipment
Lab Power Supply Turn ON and OFF Characteristics
Aldo22:
--- Quote from: mawyatt on October 06, 2024, 05:13:50 pm ---So ~160mA with 40mA Current Limit for 3 seconds :P
--- End quote ---
Yes. The DMM shows a Max of 174mA.
It's all about the measurement. There was no question that this PSU is bad in this respect.
That's why I asked today whether the DPS-150 is better.
mawyatt:
Here's some measurements with 50Ω and Voltage set to 8V and Current Limit set to 40mA.
#64 Siglent CH1 3303X @ 50ms/div
#65 Siglent CH1 3303X @ 100us/div
#66 Siglent CH2 3303X @ 50ms/div
#67 Siglent CH2 3303X @ 100us/div
#68 Instek CH1 GPP4323 @ 50ms/div
#69 Instek CH2 GPP4323 @ 50ms/div
#73 Korad KWR102 @ 50ms/div
#74 Korad KWR103 @ 50ms/div
BTW the Korad KWR102 is a SMPS with 30V/30A capability, and KWR103 is SMPS with 60V/15A capability.
Best
mawyatt:
Here's the Turn OFF characteristics, all 50ms/div.
#75 Siglent 3303X CH1
#76 Instek GPP 4323 CH1
#77 Korad 102
#78 Korad 103
Best
Furna:
50Ω wire wound resistor; Voltage set to 8V and Current Limit set to 40mA.
#31 Korad KA3005P @50ms/div PowerON
#32 Korad KA3005P @50ms/div PoserOFF
No "overshoot" but voltage stay at 2.09V => 0.0418A (multimeter confirms) while PSU display shows 2.07V and 0.039A.
Anyway for the price seems tollerable to me.
@mawyatt could you add measurments to your caputure? Are the KWR102/KWR103 also "lying"?
Why I insist on specifing wire wound? Because I am putting the PSU in the worst scenario.
mawyatt:
--- Quote from: Furna on October 06, 2024, 06:15:40 pm ---@mawyatt could you add measurments to your caputure? Are the KWR102/KWR103 also "lying"?
--- End quote ---
KWR102 reads 0.039A when set to 0.040A and KS34465A DMM reads 42.042mA, KWR 103 reads 0.039A when set to 0.040A and DMM reads 42.03mA.
Best
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version