Help With Ground Please

Steve_hi

Mar 10, 2007
65
Joined
Mar 10, 2007
Messages
65
Hi
I made an ECG and when I do a continuity test for the positive battery terminal and the # 8 pins of the TL072's i have continuity, but not on the center tap of the 2  9 v batteries, and when I check for continuity of the negative terminal and the number 4 pins of the op amps ihave continuity but I also have continuity with the negatve battery and the center tap of the 2 batteries, is that supposed to be like that is ground and negative the same?

 

audioguru2

Apr 6, 2004
12,026
Joined
Apr 6, 2004
Messages
12,026
To measure continuity you must remove the batteries. Then the negative supply will not be shorted to 0V and the positive supply will not be shorted to 0V.

 
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