dear all,
anyone could help me with the connection between a LM324 and an 8 ohm speaker...thx a biiiiiiiiiiiiiiiillion
anyone could help me with the connection between a LM324 and an 8 ohm speaker...thx a biiiiiiiiiiiiiiiillion
What's not to get? How much current can an LM324 source or sink. Is enough to move the voice coil?thank both of u for the quick reply...but the chip lm324 is provided by my lecturer...so i guess i have to use it...papabravo, i dont get u...i'm pretty new to circuit design...thx
You know these things, and I know these things, and many other forum members know these things. I was kinda hoping the OP would discover these things on his own. He seemd to have just a modicum of industry.An LM324 can output a peak current of 20mA. The RMS current is 14.1mA and the RMS power into an 8 ohm speaker is only 1.6mW. Earphones are much louder.
The LM324 "power amplifier" applies a bias voltage of 6V to the speaker that might push the cone so far out of the magnetic gap that the speaker will perform like a rectifier.
The DC current is high enough to melt a little speaker.
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