Recent content by Windadct

  1. W

    Alternator run at zero power factor lagging

    In reality - I doubt this is possible with passive components as there will always be real losses. If you are shorting the output - how are you measuring the voltage in taking the PF?
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    Getting a High Speed Synchronous N-Channel MOSFET Driver working right

    Your application is not the same as the example in the DS. The bootstrap needs get a voltage above the Upper switch
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    Power Fluctuations in our AC Mains Power Generation Facility

    Sounds like the 19KV:4160 and/or the 4160:480 Transformer has relativly high impedance and the load is at or over the KVA rating. The Trans is tapped to be correct when the load is on. Do you have a way to monitor the 4160V A tapchanger for the 19KV:4160 may work, but tap changers on 4160 to...
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    Is the IXTP86N20X4 MOSFET a Suitable Choice for Driving at 5V?

    Am I wrong to point out at Fig 2 shows this Mosfet is totally NOT suitable for 5V. And the Schematic does not have a load ? So we charge a cap, and done?
  5. W

    DO NOT throw any engineering questions at Chat GPT

    I appreciate that it gives the methodology of the solution so you can work through it. The answers can be at "executive summary" level, but it does allow you you to continually query the answers and dig deeper. I have to check on a wrong answer and ask it to explain what the difference is...
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    DO NOT throw any engineering questions at Chat GPT

    This chatbot has been getting a lot of notice lately - my son, a mech E and I were throwing a variety of questions at it, and then with a bio-chemist last nigh at dinner ( geeks - yes) - anyway. It fun but also makes you feel a little obsolete... I threw a magnetic / induction question at it...
  7. W

    What are these transformer looking like things?

    Agreed - looks like a sectionalizer, possibly with vacuum interrupters allowing it to offer protection, as well as remote connection / disconnect control - as well as manual isolation.
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    Can someone recommend a relay for me?

    OP is MIA -- but "current output of DAQ and the power supply" makes no sense: Data AQuisition unit would not have a current output. He may mean DAC - Digital to Analog - but in NI and typical control verbage that is just an Analog output- which may be what he is indicating with the - /+...
  9. W

    Hydrogen dew point in power generators

    I had always understood the varnish winding to be pretty hydrosopic - the issue is not dew point, but total moisture in the system. Dew point is easier to measure and monitor. BUt similarly - I could see it being easier to maesure Dew point then O2 as well - but it would have less correlation.
  10. W

    Object detector using ultrasonic sensor with 555 timer

    Asside from the 555 issues - the sensor in your image looks like a Ultrasonic DISTANCE sensor - https://www.sparkfun.com/products/15569 This needs more then a timer.
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    Parasitic Inductance, rough estimate -Single cable through steel

    Babadag - thanks for looking into this. A single conductor in conduit is a pretty common method for creating a heat trace, with an AC Loop In the case I am looking at there is no conduit - a single insulated cable ( 6262MCM) enters a metal NEMA box via a metallic fitting ( gland) .
  12. W

    Building an Electric Motorcycle from Scratch

    Perhaps start with a Bike conversion kit - but an older buy OK quality MTB, disk brakes - and then a well rated conversion kit. You will learn alot. Does your school have an FSAE team - they are pretty much all going electric now and there you will be solving the same types of problems.
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    Parasitic Inductance, rough estimate -Single cable through steel

    The power source is the high power test instrument, as I said mature and a large population at large, used in the leading power research labs in the country - this is a 1 in >100 application case problem. We are not going to diagnose the total system here. I was just hoping to be able to...
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    Parasitic Inductance, rough estimate -Single cable through steel

    This is a large test system, with 4 wire (remote V sense), we have seen long and "sloppy" cable runs introduce enough inductance to be an issue, and cause an oscillation of the DC. I do not think this is a passive component oscillation (LC)- but a control system response to a far more complex...
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