velleman k4700 speaker protection circuit

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cyteen

Member
2004-03-31 12:06 pm
S.E
I've just been putting this kit together and apart from getting the LEDs round the wrong way initially all went smoothly. However. when I test the unit by connecting PA on the right hand channel to V+ the relay fails to trip. When connecting PA to V- it trips fine. The left hand channel trips for both V+ and V-.

I was hoping someone would point me in the right direction.
 

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