What voltage would you expect in the following diagrams?

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PeterPiper

Joined Aug 23, 2017
3
Figure 1 - What voltage if I measure between +15 and -15 and what polarity?output.jpg

Figure 2 - What voltage if I measure between +15 and -15 and what polarity?output2.jpg
 

Reloadron

Joined Jan 15, 2015
6,312
30 volts in either case and polarity read will depend on on which line the meter probes are placed. Since you are measuring between two defined points the Ground symbol in the second image means nothing. It's a matter of point of reference for your metering device.

Ron
 

MrChips

Joined Oct 2, 2009
24,992
If you ground either +15 or -15 in Figure 2, you are creating a short circuit. If the power supply is not short circuit protected then expect to see sparks fly.
 
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