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  1. B

    Single phase motor

    I'd say your connections should be as in the attached drawing. 1.25 = run 2.5 = start 4.4 or whatever is series combination of start and run. ............See diagram below Note that direction reversal is by reversing current flow through run winding with respect to the start.
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    Reverse Photoresistor????

    Or transpose it's position on a voltage divider.
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    Need help with an automotive circuit

    If you take the time to learn how to program these devices then it's basically free. Everything you need to learn is open source and help when you get stuck is freely available from experienced people on the forums. Pretty good offer I'd have to say. In our day it was a small fortune for text...
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    Help From Anyone In The Sparky Trade

    What M said x 2. In Aus absolutely no chance of getting apprentiship approved without many checks and balances on experience.
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    Need help with an automotive circuit

    Sounds like just the job for a microcontroller like Arduino. Fairly cheap all around as far as I can see. The hurdle for you is the programming. If you know someone preferrably local that can help you there then all ok.
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    Ceramic Disc Confusion

    104 is 0.1uF...I'll let you work out the rest. Back to the books for you I'm afraid.
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    Hall effect with 5 amp draw

    Look for complete pdf ..........Hall-Effect IC Applications Guide - Allegro Microsystems page 41 .............Image attached here
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    Hall effect with 5 amp draw

    You are correct AK.....my mistake. OK so reposition the mosfet to the bottom, change to N type and invert the hall signal with a small transistor.The magnet goes on the "back" of the hall effect like I said. You can check the reasoning on Allegro web site.
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    Help with Proportional SSR

    Now that's a good question. Should be ok as far as I can see. I imagine it depends on whether or not the SSR will respond to the PWM frequency.
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    Hall effect with 5 amp draw

    You can find details of how this works on the Allegro web site. Hall stays on so long as steel in front is present so technically it does not "latch" on. Latching tends to infer that a reverse polarity is required to release so this is not the case. No idea about different types of hall...
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    Hall effect with 5 amp draw

    How about something like this? (below image) I use this particular hall effect in a very similar fashion for ignition systems on miniature 4 stroke engines. In that instance the metal strip is a series of metal "fan" blades (for want of a better wording)but the principle is the same. Note the...
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    Waterproofing A Remote Control

    Jacuzzis and the like use "air switches". A button on the bath pushes air down a plastic tube to a receiver diaphragm located yonks away from the tub, which in turn operates a micro switch or whatever and these can also be supplied with isolated low voltage.
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    Converting 110v Trafo To 220v Version

    Turns ratio primary to secondary .
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    Converting 110v Trafo To 220v Version

    This will also change the secondary output. Probably better to get a new iron. On a different note, anyone have a spare bunker I can hide in for the next couple of hours? Cyclone Debbie remnants just currently passing over the top here.:eek::eek::eek:
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    Cruise control for fly by wire motorcycle

    Details from the manufacturer.
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    Color Sensor

    You might be able to look at monitoring what turns the led on as it might be as simple as monitoring power supply on/off. Not enough info.
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    Peltier module problem?

    This one on utube gets -7 degrees @3.8amp but it does not show the voltage. Note the size of the fan forced heatsink. They also make a note that it should not be fired up without a heatsink or it will burn.
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    Calculating the value of the resistance for controlling the speed of AC fan

    Likely that it could be induction motor in which case the modern day control uses series capacitor. Not much sense catering for 90% full speed as you would hardly notice the difference. Usual approach is around 20% and 50% with the use of a dual value cap. in the one casing. Appropriate voltage...
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    Pavilion 560w MB w/bulging caps

    I have replaced parts like this before BUT the hurdles mentioned above made it a rather large task. Sometimes success, other times not. Not to mention removal of the suspect parts. With the ground tracks being so large it is almost impossible to get sufficient heat into the pins to remove the...
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    Color Sensor

    If you are only detecting when it is on you could just measure the voltage across it.
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