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  1. B

    Hacking a microwave oven

    I doubt you will find anyone with the experience and know-how will even consider such a task. Microwaves can be lethal. Not the type of thing one hacks.
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    Need help finding a USB hub schematic

    Try this.........
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    Looking for 3-axis magnetometer chip

    http://www.ebay.com.au/itm/like/281820099604?limghlpsr=true&hlpht=true&ul_noapp=true&hlpv=2&chn=ps&lpid=107&ops=true&viphx=1
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    Traffic light sequencer

    This one uses 2 -555 timers and sequences..... red, then straight to green , then back to yellow then back to red. http://www.555-timer-circuits.com/traffic-lights.html
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    Using off-brand solar panels with Mighty Mule gate opener

    Can't see any problem with that.
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    Slayer exciter questions and problem

    New twist on an old theme...... http://www.instructables.com/id/How-to-Build-a-Slayer-Exciter/ One piece I find amusing in the parts required list ....... Some sort of round sphere to use as a top load. - ~$1
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    What function do these coil

    ............with adjustable core for tuning.
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    Need a Relay with Timer

    Maybe this..... http://www.ebay.com.au/itm/DC-12V-Delay-Relay-Delay-Turn-on-Delay-Turn-off-Switch-Module-with-Timer-NEW-/391179622849?hash=item5b141f59c1:g:86MAAOSwcwhVRcAg
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    diodes

    Easy to get "feedback" in auto circuits, mostly due to the fact the wiring is mostly earth return switching.
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    mosfet shorted after i connect them in parallel ? did i doing it wrong ?

    There is a summary at the end of this particular pdf of things to watch when paralleling mosfets. www.irf.com/technical-info/appnotes/an-941.pdf
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    ac motor control

    Best just to use a small dc motor /gearbox ...easy to control...safe to use...run off plug pack....cheap off Ebay...tons of torque.....easy to reverse Speed control units there also for a few dollars. example...
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    LED Strips blink on all X10 circuits

    Seems a lot of work when a direct replacement tube is available for the existing 40w tubes. Kit comes with a replacement "starter fuse" to fit to the existing starter base. Note that they are mostly not suited to many existing dimmers etc. as with many LED fittings and drivers.
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    Replacement Capacitor

    From my experience...yes.
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    Replacement Capacitor

    If the motor is not working at all at present, best to trace through the wiring. Start with the supply lead and plug, through to the switches, speed control governor points and finally through the motor itself. You could use the wiring chart shown above and although the above may contain...
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    Replacement Capacitor

    Think you will find it is a suppressor cap. Green wire to the frame and the other two across the speed control unit.(points) I think the speed control will work similar to the Sunbeam mixers. They have a speed governor shaft coming from the armature centre with bob-weight arrangement. this in...
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    Hfe question...

    See explations here ........ https://www.electronicspoint.com/threads/hfe-forward-beta.42535/
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    Réfrigérateur whirlpool

    Google translator is a great thing....seems this bloke is having trouble with the defrost but there simply isn't any auto defrost. Mahfoudh, as I said, I think you'll find the temp control is done via a fixed thermistor possibly mounted somewhere in the skin or even in the evaporator...
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    555 Timer Push-On, Push-Off but with timer as well

    Reset pin is terminal 4 on your 555 but would require an additional switch.
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    Help with comparison of DMM's.

    As an addition to Hevans1944, look at the Cat ratings as well. If you have no intention of going near incoming mains, perhaps cat 2 or 3 would suffice.
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    Réfrigérateur whirlpool

    Cannot see any reference to thermostat in the parts layout however the circuit diagram shows the temp control as a thermistor which may be why the original tech said there was no controller (as such...not an accessible adjustable unit as one is familiar with at least) Only testing will reveal...
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