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    Power supply for 16 Projectors 12V 2.0A

    Well, actually, if you use one of the units from Thailand, (commonly known as swirl-flush) ....then yes they do. The coriolis effect on the other hand which is what you probably meant to refer to cannot influence the rotation either way as the orifice (amoungst other things) is simply not...
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    Power supply for 16 Projectors 12V 2.0A

    So....use 16 2A plug in supplies. Then if one goes down, no problem ...or/less of a problem.
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    D Cell Rechargeable pack?

    So stick a timer on it and discharge before use....OMG...knockers everywhere.
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    D Cell Rechargeable pack?

    One can build a simple charger for Ni-cad or Nimh cells from a 317 adjustable voltage regulator ( standard charge rate up to around 1A assumed) Circuit on the web........... power supply can be anything with voltage and current above largest number of cells voltage and largest current you expect...
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    Help request: Project measuring the absorbed current

    Best try Google Arduino completed projects. Arduino forum will help with your design "problems" but will not (for obvious reasons) get into actual design or code writing. You'll need to be a bit more specific on whether AC or DC (assume former) and the loads current you expect to monitor. As a...
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    What incandescent lamp wattage to buy for PSU troubleshooting ?

    I use a 150W incandescent flood lamp as a series test lamp for many things including your switch mode power supplies. First photo is the 150W flood lamp. ....if you want more current try a 275W bathroom IR heat lamp. Although the first would normally be sufficient....all you are looking for is a...
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    I want to combine these two circuits into one. can someone help?

    You have provided a "fritzing diagram" it is NOT a circuit diagram as such. They are difficult to follow and to answer one at this end has to redraw your "fritzing" into something meaningful.(which isn't going to happen) So, please provide a proper circuit diagram. Thanks
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    Cathode Ray Question - No Focus without deflection coils

    https://vsa.edu.in/how-deflection-system-in-crt-work-explain-with-diagram/
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    Need a countdown controller for plug, that needs not button pushing!

    There is this off the shelf device (not plug in as your request is more of a one off nature) https://www.ebay.com.au/itm/304599145983 It would time out if supplied via a pulse input from the pump call circuit but would require additional circuitry to complete. Equipment such as a contactor for...
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    SILICON CHIP LC METER PROBLEM

    Wouldn't agree with that statement. Did you build the "shield" board yourself...?? A few photos of what you have in front of you might be helpful.
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    Universal Motor 2 speed Rectifying Diode Kaput (1990 Unimat 3 Lathe)

    It's applied voltage, not inrush. Inrush will refer to the "inrush current" ...... The 400v is rating the diode to withstand the applied peak inverse voltage of around 350v on a 240 AC supply system.(when the sine wave reverses) No problem going higher (1000v) but any more would be just more...
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    Electrotechnique homework

    Think you may need to place your problems here, not zipped up, could be suspicious files enclosed.
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    SILICON CHIP LC METER PROBLEM

    No mind readers here chum. Kellys_eye has a good suggestion.............
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    First time schematic for USB-C power detection

    ........................and just when one thinks they've seen it all. :rolleyes:
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    What motion sensor to choose

    Note that there are 2 sensor types mentioned in my reply. One is a passive unit which detects movement by the change in natural heat energy, available as an Arduino "module". The other is a Tx and Rx unit which generates it's own signal butmust be modulated to avoid interference from sunlight...
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    Mixed solar-electric network water heater.

    You cannot mix grid supply and your solar supply willie nillie. It must be an approved grid tie system which automatically drops out when the grid goes down. Reason being, without this, your system could backfeed the grid and create a fatal situation for line workers etc. Other than that I have...
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    SILICON CHIP LC METER PROBLEM

    Suggest double check your wiring. As it apparently comes as a pre-assembled unit, if the above does not show anything unusual, take it back to where you bought it and ask for another.
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    Weird coil latching problem

    Look for an intermittent connection in the ac side somewhere, possibly a dry joint.
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    What motion sensor to choose

    Direct the IR sense through a tube of appropriate size to cut down the angle,........... simple. There is an Arduino Passive infra red module that might suit, around 16mm diameter I think. One could also use the Arduino to then give data to your app. Run of the mill IR tx rx signal would need...
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    short caps of electrolytics fault goes

    Voltage Extra low voltage means voltage that does not exceed 50 volts alternating current (50 V a.c.) or 120 volts ripple-free direct current (120 V ripple-free d.c.). Low voltage means voltage that exceeds extra-low voltage and does not exceed 1000 volts alternating current (1000 V a.c.) or...
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