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General Asylum General audio topics that don't fit into specific categories. |
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General Asylum General audio topics that don't fit into specific categories. |
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In Reply to: ? about a Cheater plug to eliminate hum---might this configuration cause "death"? posted by jjk12 on April 6, 2007 at 15:19:26:
Just to make things a bit more complicated, I thought I might raise another point about ground wires and ground connections. When you buy your Tektronix 100 mHz digital dual trace storage analyzer/oscilloscope, you may notice that the 3-prong supply cord comes with an adapter. The adapter is a 3-prong inline plug with the ground pin removed to provide ground isolation.A lot of oscilloscope tests can be done with the common side of the probe connected to ground, but any signal that is through an isolation device will be pulled to ground if the cheater plug isn't used.
You might not think it's that big a thing until you go to check a pulse transformer on a 350 A power switching SCR, and without the cheater plug you pull down one side of an AC regulated circuit....
You might not know right away what the problem is, but you certainly know it's a bad thing.
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Follow Ups
- Re: ? about a Cheater plug to eliminate hum---might this configuration cause "death"? - StephenJK 19:08:49 04/06/07 (0)
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