Hi,
I am repairing an old receiver and observed that there is a 4700pF cap across the relay switch. I believe that is for protecting the relay switch from the inductive load (transformer in this case). My question is that when I measure the AC voltage across the switch and the neutral when the relay is open the meter reads 120V, is that normal? In the figure across points A and B. Currently there is no load connected. My guess is that the reactance of 4700 pf capacitor (about 565 Kohms ) is allowing the voltage to show up on the other side of switch even when it is open.
Can someone throw some light on this ?
Thanks
I am repairing an old receiver and observed that there is a 4700pF cap across the relay switch. I believe that is for protecting the relay switch from the inductive load (transformer in this case). My question is that when I measure the AC voltage across the switch and the neutral when the relay is open the meter reads 120V, is that normal? In the figure across points A and B. Currently there is no load connected. My guess is that the reactance of 4700 pf capacitor (about 565 Kohms ) is allowing the voltage to show up on the other side of switch even when it is open.
Can someone throw some light on this ?
Thanks
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