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Chip Amps Amplifiers based on integrated circuits

LM 4780 amplifier heat question
LM 4780 amplifier heat question
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Old 17th May 2004, 09:39 AM   #11
microJean is offline microJean  Romania
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update:
Datasheet:
IDD Total Quiescent PowerSupply Current (VCM = 0V, VO = 0V, IO = 0A) 110-170 mA (max)

That means that the power disipation with no input signal is ( |+30v|+|-30V| )x110mA=6,6W/channel.
So there are 13.2W/capsule and 40W per 6 channels.

Is my calculation correct?
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Old 17th May 2004, 11:25 AM   #12
microJean is offline microJean  Romania
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Checked the board with the osciloscope.
There are no 'visible' signs of instability.
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