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May 23

Porsche Builds the One-Millionth 911

Porsche AG today resembles very little the company from 50 years ago. Instead of making just sports cars, the Volkswagen-owned operation makes a ton of money by selling SUVs—lots of SUVs which share platforms with Audi and VW models. They also sell a rather sporty and incredibly competent seda

May 23

Dynamically Changing Inductor Value In RLC AC Circuit

Hi, I have an RLC resonant circuit (in series). The inductor is a multi-turn coil which creates an excitation field. The AC sinusoidal signal is +/-12V and the frequency for the circuit is below 10k. I would like to add/drop coils to the circuit dynamically (add/drop another inductor in series). I

May 23

Earthing Problem

we have 120 kva ups in company, when we started it then our neutral to earth voltage getting vary. our neutral to earth voltage is o.6 or less then 1V in company, after UPS on its invertor section startup then suddenly neutral to earth voltage comes across 1.9 or 2 V. As we discussed with UPS compan

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