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  1. B

    Automatic Locking mechanism for spherical bearings using Push-Pull Solenoid

    A screw arrangement would not require any "holding" voltage/current. Wind in, locked......wind out, unlocked. Much greater locking power for much smaller mechanics as well.
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    Help with Transformer Theory

    ............also turns ratio often used.
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    Rewiring an old shorting out DC motor powered by AC

    I doubt even a youtube asian site could bring that mother back from the dead............:eek::eek:
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    LEADING Power Factor Correction Problem

    I very much doubt any power supply authority would be concerned about your "toy".
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    Elite2 digi designer 115v to 230v

    3 ohm dc resistance does not seem anywhere near high enough for a small transformer. I would expect something more like , as I sad previously, 20 dc ohm resistance to give the required ac impedance for operation. Below is just one example for 220v ac. https://sound-au.com/articles/xfmr4.htm
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    Elite2 digi designer 115v to 230v

    No point if , as the Op says, existing transformer primaries measure out at 3 ohm a piece. I tend to think the measurements were done incorrectly.
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    What is the purpose of connecting the resistance of 2.2 M ohm with the analog input signal as shown in the diagram

    Fairly certain that is what I already said......... :oops:
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    Elite2 digi designer 115v to 230v

    You appear to be jumping to conclusions all over without any substantial test or proof. Just trying to read your description with poor layout and grammar is enough to make my head spin. It is obvious you are way in over your head and some assistance from a local technician would be advised...
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    Elite2 digi designer 115v to 230v

    Firstly, did it work before you opened it up or have you actually seen it working previously? If so, what has changed to render it unworkable? Did you plug it in to 240v while it was arranged for 115v operation? Transformers are usually fairly sturdy beasts and with fuse protection I doubt any...
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    Advice please ! Need to buy a present for an electronic hobbyist

    Think you need to open your eyes.....scrap yards and rubbish dumps are full of the stuff. Haven't noticed it's a throw away society these days, bugger all gets repaired.
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    Advice please ! Need to buy a present for an electronic hobbyist

    Broad question however, everyone whether electrical or electronics needs a "reasonable" quality multimeter. This (UT139) will suffice provided he keeps to the "indoor" section of any mains related gear (category 3)or just about any electronics. https://meters.uni-trend.com/product/ut139-series/...
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    What is the purpose of connecting the resistance of 2.2 M ohm with the analog input signal as shown in the diagram

    Possibly a pullup resistor for an open collector on the sensor.
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    How to find a replacement for a transformer of whirlpool oven control board (8303505)

    Up to you....supply required info or work it out yourself.
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    Rewiring an old shorting out DC motor powered by AC

    Sounds like a free one way ticket to a hole in the ground. Bin it and forget it.
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    How to find a replacement for a transformer of whirlpool oven control board (8303505)

    Well, if you know anything at all, that would be expected if any fuse were buried in there and it blew. Show a closer detailed version of your photos so anyone can make out any markings on the pcb around the transformer and all the relays especially. Some detail may be assumed from there. Then...
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    Vibration excercise machine repair

    ???????????????
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    Help fixing Digital Multimeter Proskit MT1210 (2)

    Rating is usually written on one end cap.
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    Help , need to identify this

    It's a 2 in one capacitor used for rf suppression. Probably in the range of 0.1uF per leg. One leg each to the motor with the green to the frame. Might pay to double check as it does not look like the earth wire on the main lead is connected to anything.
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    Rockchip 818-1 extreme heating issue during charging

    Can you put a link to the specs for this device. Also, is this a charger that came with the device or something you have created.
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    Is this the correct way to wire up a 5v circuit to use battery backup?

    You really need to look at how a P-channel mosfet is used as a high side switch. Plenty of info on the internet.
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