DaveE's latest activity

Thanks to all who voted for me. Agreed bribes will be in the mail tomorrow. 😁

Because you added a series resistance R2. Yes, I know you know that, but others may need to have it explicitly stated. This is a...

In your sim you added R2. This is perfectly reasonable to do, but it is no longer the circuit that the argument is about. Once you add...

@Baluncore is right. If all of the components are ideal then the resulting system of equations has no solution. This is an “irresistible...

Welcome to PF. An impossible situation has been hypothesised. If V1 is an instant step function, then it must instantly charge the two...

It's what's written in your local building code book(s). Sometimes it's not simple or obvious, that's why the books are big. Sorry, I...

This!!! RCD/GFCI should not be used as primary protection. They are an additional safety feature which simply isn't as reliable as good...

The point was that this sort of thing happens "in the wild". The real world example I gave did not have the conduit or switch box...

@gen x the link you proved in post #12 makes sense. The user named transistor is basically correct although I will say that a fault the...

When I was a grad student teaching assistant in the early 1990's, I assigned a design problem for the gears and bearings class. The...

Also, note that isolation transformers aren't just your run of mill transformer. They will (should) have appropriate construction with...

Isolated/floating systems are also used in places where a fault would otherwise trip a breaker and the loss of power would cause a large...

Isolated systems are used for safety on construction sites etc. A transformer is used where the secondary is not connected to earth. A...

It works better if you search for knowledge, not just answers. But kudos for recognizing that you must verify the information you find...

Because a common ground connection protects the insulation, by preventing overvoltage, that might break it down.