joeka
Newbie level 4
Hi,
I'm currently working on a project where I need to keep power during micro-cuts. In order to validate the power supply card, this one must supply a camera during 300-400ms.
To do this, I'm using 3 high caps 3.3F 2.7V (REF : NICHICON - JUMT1335MPD. - CAPACITOR DBL LAYER, 3.3F, 2.7V) as shown in the following schematics :
However, I tested it and I got this when I switched off the power :
Blue : Input Power (12V)
Red : terminal voltage High Caps
Green : Output Power (12V) (PowerIntern on schematics)
I think that current is too high on DC ouput, so coupled to high Cap ESR, it generates these oscillations.
I' d like to solve this problem. I may need to use higher capacitors to reduce ESR ? but I'd like to know if there are other solutions ?
Thank You
I'm currently working on a project where I need to keep power during micro-cuts. In order to validate the power supply card, this one must supply a camera during 300-400ms.
To do this, I'm using 3 high caps 3.3F 2.7V (REF : NICHICON - JUMT1335MPD. - CAPACITOR DBL LAYER, 3.3F, 2.7V) as shown in the following schematics :
However, I tested it and I got this when I switched off the power :
Blue : Input Power (12V)
Red : terminal voltage High Caps
Green : Output Power (12V) (PowerIntern on schematics)
I think that current is too high on DC ouput, so coupled to high Cap ESR, it generates these oscillations.
I' d like to solve this problem. I may need to use higher capacitors to reduce ESR ? but I'd like to know if there are other solutions ?
Thank You