i hav broke many lm3886 pins because i cant find any pcb layout having right pins space. can i use filter caps and smooth caps on transformer but not on the chip pcb. the lm3886 schematic in data sheet is very simple. i think it is not best and superior but for subwoofer its ok?????
Hi
No, if all the smoothing / decoupling capacitors are by transformer the LM3886 will most likely go unstable and burn out. You need 100nF + 22uF min on the +ve and -ve power supplies near the chip.
Yes with the above smoothing / decoupling in place the data sheet circuit diagram is OK for a subwoofer.
Regards,
Andrew
can i use filter caps and smooth caps on transformer but not on the chip pcb. the lm3886 schematic in data sheet is very simple.
No, if all the smoothing / decoupling capacitors are by transformer the LM3886 will most likely go unstable and burn out. You need 100nF + 22uF min on the +ve and -ve power supplies near the chip.
i think it is not best and superior but for subwoofer its ok?????
Yes with the above smoothing / decoupling in place the data sheet circuit diagram is OK for a subwoofer.
Regards,
Andrew
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.