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  1. B

    Is it possible for a MOSFET to work intermittently?

    Get a mechanic to run a diagnostic on it. These things tend to get logged in the ECU for easier fault finding.
  2. B

    Pulse Width Modulation

    Windscreen wipers are generally controlled via scr , the speed being delays between wipes rather than constant speed control of the motor.
  3. B

    Float Valve Circuit Problem

    OK...sorted. Hope the bloke is still around. :) Details below. Starting with Tank B empty, Float switch is in the position A shown on the drawing. When the Timer closes, relay RA turns on, which in turn runs Motor-A via RA-1 contacts. Disregard RA-2 latch contacts for the moment. When Tank...
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    Float Valve Circuit Problem

    NRLD, First attempt. Timer controls complete run time. Float switch is changeover type. Position shown is conventional power off, ready to start. Only defect is when timer shuts off, cycle remains in that position until next time cycle. e.g. If tank is pumping down when timer...
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    Float Valve Circuit Problem

    A bit of misunderstanding here in your description. This first part is ok. But then this....... You just said in the first quote that the level switch controls the pump A. This part is also confusing as the relay is no longer powered so I'm assuming it will have to be changed. Also, are the...
  6. B

    Float Valve Circuit Problem

    Draw your circuits in the normal (power off) mode. Do not switch neutrals. Appears the way the relay gets it's return (N) is through load A?..........(not a good idea...source of 1 problem) Just a quick look but I'll get back to it later(missus wants job done) If no one else jumps in...
  7. B

    STOP 2nd phone line from ringing

    Draw a circuit of what you have. Normally ring voltage is much higher than line. Also depends on what country you are in as to origin of tone.e.g. here in Aus everything comes from within the modem (NBN).
  8. B

    Help finding fault with old bass amp that blows fuses

    To quote Kellys-eye again, is the fuse blown to smithereens or merely melted apart? I did not see where you answered that.
  9. B

    Help finding fault with old bass amp that blows fuses

    I'm wondering if you read Kellys_eye #7. It is possible you don't have any fault , just incorrect fuses.
  10. B

    How did you start to learn programming?

    Most these days want the "easy" way. There are systems like Arduino where libraries are included in which some of the hard yakka is done. No matter which system, if you want to be any "good at it" you have to put in the long haul just as most here have done.
  11. B

    Reversing polarity

    Go easy on the professionals , they take a lot of time and effort to help. It is not their problem if you cannot follow.
  12. B

    Dc switch

    Provide a circuit drawing like you were asked to do.
  13. B

    Is it possible to use two LED with a 3-pin non-latching Hall effect sensor?

    Most hall effect sw are open collector.
  14. B

    LCD for mp4 player module ?

    There are small lcd monitors available on places like Banggood for under $20. They operate on PAL/NTSC so you will need to know if your video signal matches. Manual for your device may show what it is. Also 12v dc this particular one...
  15. B

    New to electronics. Toaster Oven disassembly question

    This is just a disaster waiting to happen.
  16. B

    RF Transmitter/Receiver Without Arduino?

    I use pro mini on many occasions, yes a couple of bucks and small and sleek. Anyhow, you consider you know better then go for it.
  17. B

    RF Transmitter/Receiver Without Arduino?

    Why? Arduino only cost a couple of bucks and there is support for them.
  18. B

    Multi power supplies housing

    If you already have the +/- 15v supply unit, perhaps just add a bunch of the little adjustable converters in the same case. https://www.ebay.com.au/itm/Adjustable-DC-DC-LM-2596-Converter-Buck-Step-Down-Regulator-Power-Module-SY/252324966228?epid=775344253&hash=item3abfbd6f54:g:ygAAAOSws4JW7LPR
  19. B

    Multi power supplies housing

    Maybe use an old pc supply.
  20. B

    Output voltage is higher than it should be

    Board looks dark around the switching ic.
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