Short_Circuit Posted March 8, 2006 Report Share Posted March 8, 2006 HiI'm trying to design my own amplifier but i don't know how to determine the value of the quiescent current.Can anybody give me some equation or advice ??? Quote Link to comment Share on other sites More sharing options...
windoze killa Posted March 16, 2006 Report Share Posted March 16, 2006 Certainly.But can we have a bit more info. Type of amp? Audio? RF? Type of active device? Quote Link to comment Share on other sites More sharing options...
zicco Posted April 20, 2006 Report Share Posted April 20, 2006 yeah really which type of the amplifier are u building let us know Quote Link to comment Share on other sites More sharing options...
audioguru Posted April 20, 2006 Report Share Posted April 20, 2006 You can look at spec's for audio power amp ICs.A little LM386 gives 300mW to an 8 ohm speaker and has a quiescent current of 4mA.A car radio power amp gives 4W to a 4 ohm speaker and has a quiescent current of about 30mA.A higher power home stereo amp gives about 70W to an 8 ohm speaker and has a quiescent current of about 60mA.The idle current in the output complementary emitter follower transistors is adjusted to eliminate crossover distortion. Quote Link to comment Share on other sites More sharing options...
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