Recent content by Electron Spin

  1. Electron Spin

    Water filtration thumping problem

    SITRIP: Well, Problem fixed. Yes, I know I posted "problem fixed" in post # 9 but now repeatability has been verified to be a-ok and nothing blew up to take half the county with it... I called the mfg. told indicated the make and model, the guy asked me in so many words what was it like back...
  2. Electron Spin

    Alternatives to creeping contacts for high frequencies

    Tom, that was a good first pass, I would like to see your second pass! :oldsmile: Maxim, I still am a bit confused on the operating freq. Is it 18 Mhz or 850? I could break out my EE handbook, ARRL reference book, and other relevant materials and have a go at your project. Without knowing the...
  3. Electron Spin

    Water filtration thumping problem

    Those are really good questions for the manufacturer to be sure concerning permeability functions and filter sizes. Looks like my #1 problem stopped with evacuating the tank and pressurizing the bottom side of the bladder to 7.5 PSI. Tomorrow I am going to call the manufacturer for some...
  4. Electron Spin

    Water filtration thumping problem

    AK_NC I like your hanger philosophy. :) I do not know what the house input pressure is. Would it be located outside where they read the usage? Anyway, it flows just about like any regular house, good nuff for a spray nozzle to wash a car. So this is what I did. I went and bought a...
  5. Electron Spin

    Water filtration thumping problem

    Thank you anorlunda, Yes indeed. I forgot to mention that I do have a water dampener under the sink before any cold water outputs or appliances. Yes, as a petroleum engineer, mostly drilling, this thumping or hammering was one of my first thoughts. Alas, then I would open up the output valve I...
  6. Electron Spin

    Water filtration thumping problem

    The source is from the city water system that supplies the cold water to the main faucet. The passive "switch" or one way/2 way valves is connected to the main 2.5 gal tank and the 3 filters. It is about 1 inch high and 4" in for Y and X. The two vertical filters are cylindrical pre-filters...
  7. Electron Spin

    Water filtration thumping problem

    I have an old under the sink H2O water filtration system. Its main components are 2 cylinder type filters, one 2.5 gal. storage tank, one passive mechanical "switch" plus a birds nest of plastic tubing with zero leaks anywhere. The output (dispenser) is your standard gooseneck type with a...
  8. Electron Spin

    Hola, Hello, Konbanwa, Namaste

    Welcome and congratulations on your studies!
  9. Electron Spin

    Comment by 'Electron Spin' in media 'The Map of Physics - YouTube'

    This should be the opener in any beginning physic class. Well done Sir.
  10. Electron Spin

    Is it OK to write the resistance in parallel like this?

    A bit off track but in // r's the total network R should always be smaller than the smallest resistor in ohms. Also, a network has no P/S whereas a circuit has a power supply. And again what Jimbo said... R total = the sum of the reciprocals, reciprocated. You can use the same formula for...
  11. Electron Spin

    Announcement Please take the 2017 PF Betterment Survey

    Dear Sire Bernhardt, I will be happy to take a one off you hands if you got a spare...i require a size 13 7/8X or larger for a shirt, pants and a tent for night for my wife and 13 young'ins..We live under under an overpass ..Anything helps! :redface: Any non perishable canned food would...
  12. Electron Spin

    Just here for your Astrophysics jokes

    Awww ,,,, shucks-a-ronnie... ,, THANK YOU SIRE Salnam! :)
  13. Electron Spin

    Varying frequency of an LED drive circuit

    I would first consider Using a operational amplifier config. As for our good friend berkman mentioned for any of the 3 mentioned needed effects, using of course the appropriate peripheral outboarded components
  14. Electron Spin

    Just here for your Astrophysics jokes

    Sire Dave, I'll say it fer' ya'... I am the joke! :redface:
  15. Electron Spin

    Just here for your Astrophysics jokes

    :oldconfused: How d ya' know tha' little poochy do not like gravity? If it did, it would be a space dawgy! :oldfrown: float'in all around, spin'in and such... :angel: