Protecting loudspeakers in bridge amplifier

alex0 · 30th April 2004, 07:25 AM

I make one-channel bridge amplifier 2xTDA7293. Protection circuit used relay and standard schema for DC detection. Is it necessary to use 2 DC-sensors (2 resistors with non-equivalent value) for both outputs of amplifier or it’s enough 1 ?

B.VDBOS · 3rd May 2004, 07:15 AM

One should work ok

Its only really the AC zero volt reference that’s changed, it should still detect DC

30th April 2004, 07:25 AM	#1
alex0 diyAudio Member Join Date: Jan 2002 Location: Moscow	Protecting loudspeakers in bridge amplifier I make one-channel bridge amplifier 2xTDA7293. Protection circuit used relay and standard schema for DC detection. Is it necessary to use 2 DC-sensors (2 resistors with non-equivalent value) for both outputs of amplifier or it’s enough 1 ?

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3rd May 2004, 07:15 AM	#2
B.VDBOS diyAudio Member Join Date: Aug 2003 Location: Auckland, New Zealand	One should work ok Its only really the AC zero volt reference that’s changed, it should still detect DC

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