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-   -   bridge mode for LM 3875 (http://www.diyaudio.com/forums/solid-state/325-bridge-mode-lm-3875-a.html)

partyjups 3rd June 2001 12:26 PM

I have now made up a small stereo amp using 2 lm 3875 based on the circuit from ESP page for Lm 3876 with some changes because of no mute funktion on the lm 3875.
I will like to know if I can use the Amp i bridge mode?
my speaker are 8 ohm.

Is it good for me to use the ESP project 14 ?

Or if I want to use the power ic's for bridge It will be better for me to base the amp on the LM3886 ic's ?


I already tryed to use 2 lm 3875 in bridge mode.
but i was not shure how to do, so I based it on the
application note for lm 1875 bridge mode.

It played but it get very hot. and maked big noise when turned on.

jeppe c.

partyjups 3rd June 2001 12:34 PM

Lm 1876
 
I didnt based it on lm 1875 but 1876 bridge application note. i still used the values form the esp project lm 3876.

jeppe c.

ppl 5th June 2001 05:49 PM

I was wondering the same thin about the LM-3886? The data sheet gives no circuit for a Bridge mode. I would like to use a Single supply also? TIA


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