Products > Test Equipment
New miniature programmable DC power supply - FNIRSI DPS-150
Aldo22:
--- Quote from: rozwell on November 11, 2024, 06:18:10 pm ---Hello there!
Anyone knows if it has reverse current protection?
For example: I'd like charge EFB car battery with CC 5.0A / CV 14.60V until my power bank with PD@20V runs out of juice.
Will DPS-150 survive when power bank recovers and for some reason negotiate lower voltage, like 5V of 12V?
--- End quote ---
The manual says:
Protection Mechanisms
● Overvoltage Protection
● Overpower Protection
● Overcurrent Protection
● Overtemperature Protection
● Undervoltage Protection
● Reverse Input Protection
● Reverse Output Protection
rozwell:
--- Quote from: Aldo22 on November 11, 2024, 07:50:01 pm ---The manual says:
Protection Mechanisms
● Overvoltage Protection
● Overpower Protection
● Overcurrent Protection
● Overtemperature Protection
● Undervoltage Protection
● Reverse Input Protection
● Reverse Output Protection
--- End quote ---
Of course, the manuel, I forgot about their website, thanks!
I just checked it and found these under 7.Precautions section of the manuel:
* The product operates in step-down mode, so ensure that the input voltage is higher than the
output voltage.
* The power supply range for this product is DC 5V~30V. Output will be disabled if the input
voltage is lower than 5.0V due to undervoltage lockout, (...)
* When charging batteries, it is strongly recommended to add a reverse current protection
module (such as a Schottky diode) to the output end to protect the device from damage.So I'll probably use a mosfet for reverse current protection ;)
DaneLaw:
--- Quote from: rozwell on November 11, 2024, 09:18:37 pm ---...
* When charging batteries, it is strongly recommended to add a reverse current protection
module (such as a Schottky diode) to the output end to protect the device from damage.So I'll probably use a mosfet for reverse current protection ;)
--- End quote ---
Yep, take your precautions, I did not read the manual, and Im down a Ugreen PSU that took the kickback https://aliexpress.com/item/4001026960817.html? when trying to nurse a 9v back to equilibrium.[/list]
Newii:
I saw Kerry's review and the OV OC protection takes a long time to kick in, it takes 500ms. Has anyone who has the product tried to replicate what's in the video?
https://youtu.be/ZY2zKWzFi7E?si=PgV8v06HdMPJ_JbK&t=1155
Aldo22:
--- Quote from: Newii on November 17, 2024, 04:09:12 am ---I saw Kerry's review and the OV OC protection takes a long time to kick in, it takes 500ms. Has anyone who has the product tried to replicate what's in the video?
https://youtu.be/ZY2zKWzFi7E?si=PgV8v06HdMPJ_JbK&t=1155
--- End quote ---
Yes, it responds slowly.
I wouldn't rely on it.
Other than that, the switch-on behavior is quite good.
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