E-design
Advanced Member level 5
This specific Chinese supplied power adapter had much more output ripple than the rest of the batch.
On closer inspection, the series inductor in the 2nd-stage ripple filter was shorted out.
On the rest, this was not shorted. It makes one wonder how this slipped through? It is almost like a reject pcb made its way into the production line.
The ripple level returned to normal when the track section was removed.
On closer inspection, the series inductor in the 2nd-stage ripple filter was shorted out.
On the rest, this was not shorted. It makes one wonder how this slipped through? It is almost like a reject pcb made its way into the production line.
The ripple level returned to normal when the track section was removed.