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    Fixing an old car century battery charger

    Never seen these things capable of jump starting a car anyhow, especially when the current can reach upwards of 600A on the older style starter motors. There was one exception, and it was O-L-D. Tranny cooked itself and I had to rewind it. Primary had wire gauge like fencing wire, secondary...
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    Need help identifying LCD screen...

    I'd say part is original manufacturer i.e. OEM Good luck at getting a new screen together and working if it is as attached image.
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    Basic electronics advice needed, regarding room temperature quantum bit design.

    Analog sensors are iffy in a digital world. They will wander all over the place and many readings averaged out are needed to get any resemblance of accuracy. Digital readings are accurate and simple and cheap these days. I take it that was the idea......??? Other than that cannot follow your...
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    HELP me repair a HP SL4282N MediaSmart 42” LCD HDTV

    Many LCD screen faults can be tracked down to failure of the backlight. If this is the fault, you can connect a known good signal and turn the tv on, an image can be seen by shining a torch at an angle to the screen. As you are a self confessed amatuer, the standard warning about fooling around...
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    Replacing PCB mounted transformer

    In the words of Young Mr.Grace (are you being served)......... You've done very well.
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    Tumble Dryer with No Heat Generation?

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    Tumble Dryer with No Heat Generation?

    Also they are fairly common and should be available on whatever online place you have there such as Ebay. Should be a temperature marking on the body of the device. Part no.20226 in your photo.
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    Amplifier Alpine ra60f

    RMS or peak.....? How do you know...??
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    Replacing PCB mounted transformer

    Have to disagree with that comment. They do burn out, especially the primary and being fully encased, would make for more spectacular cook-up. A slightly higher va rating wouldn't hurt. Even though it may be marked as 9v, the output will always be higher and the larger VA will sustain this...
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    Replacing PCB mounted transformer

    1. yes, single output. 2. correct, there would be at least 3 perhaps 4. 3. transformers of a given rating are usually the same physical size so I'd say offhand your replacement may not be suitable compared with the original. However, transformer may be built using more modern materials which...
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    heater controller alternative

    Model number..??
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    Phase voltage in AC Delta connection

    Nope....
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    Phase voltage in AC Delta connection

    If your elements are the original star connected, you'll blow the guts out of them on delta. Reason being the original star has 2 elements per phase with any imbalance on the neutral. Delta has one element across across the two phases. Why you would need to change to delta is beyond me.o_O
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    2 VCRs both eating tapes

    Usually find youtube has some handy hints at times. This one is no exception......
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    Reset Button for a DPDT Relay

    This is a fairly standard approach to start reset applications. Could be any voltage supply, adjust to suit your relays.
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    What is the typical mAh capacity of a 9v?

    Also the 18650 cell is a good choice in many instances but thet normally do not have any bms board installed on the cell. Select one which is around 2500mAh and weight around 42gms. These are easily obtainable as are single cell usb charge modules...
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    What is the typical mAh capacity of a 9v?

    EBL for example on Amazon, show a discharge curve with volts and amps but no time base so pretty useless . Just put there to try to impress I'd say.
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    What is the typical mAh capacity of a 9v?

    The standard 9v smoke alarm battery has a capacity of around 260mAh BUT........ as with all batteries the mAh rating depends on the discharge rate. It could be 1,5,10 or 20 hr discharge time. Batteryuniversity web site should have details of the discharge time versus capacity charts. Anything...
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    Need help determining electronic component

    possible that bank could be all the same value....are they in parallel on the pcb side???
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    Power supply with current output

    There are modules relatively cheap but you need to provide a decent power supply unit. Probably something along the lines of a laptop power supply which are plentiful and again relatively cheap online. Regulator example...
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