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    Timer circuit

    Because it's the same in reverse as in a car radiator, allowing the water to flow more slowly in the coils allows more cooling/transfer of heat. A well known f/up most people make when they have auto heat problems and first thing they do is pull the thermostat and throw it away, then wonder why...
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    Timer circuit

    Panel cannot be hotter than the sun which produces the heat, sorry..........
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    Timer circuit

    hehehe....yup, my first thought also. Although, there is most likely a good reason why it is designed to operate the way it is.
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    Replacing LED driver for shop light

    Learning already..........:rolleyes: Thing is, I've heard this excuse before and it just doesn't cut it. You'll be fooling around with mains supply to begin with which will see you (or worse some other family member) pushing up daisies as you are obviously inexperienced. Best advice is bin it...
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    Replacing LED driver for shop light

    Waste of time as you'll only learn it is just that " a waste of time". These things are not made to be repaired.
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    UART communication between RPI Pico W and Arduino Nano

    hehehehe,,,,yeah.
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    UART communication between RPI Pico W and Arduino Nano

    Then there may be difference in comms speed/frequency. Voltage divider might be ok but the devil is in the schematic drawing you failed to provide. As far as that goes, why not use the level shifter modules, not as though they are "expensive".
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    Replacing LED driver for shop light

    Sounds about right....even the small round oyster LED lights run up around 50 to 60v dc. As far as repairing, forget it. Even if you could track down a new driver, it would cost you more than the whole completely new fitting. These manufacturers are not stupid. Repair driver...maybe, but you...
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    Help identifying smd component

    From your description and the markings, I'd guess at it being a spdt miniature switch, good chance on it being an oem device. Best of luck chasing down one of those.
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    Is a circuit necessary in this condition?

    Many of those projectors used a ntc resistor in series with the bulb to stop the inrush burning the filament prematurely. To give you some idea, had a cold circuit dc resistance reading on a bathroom heat lamp the other day. 275w on 240v but the cold resistance was 9 ohm.
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    Low frequency adjustable but stable oscillator

    Definetely.....usually around 5%.
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    beginner- Arduino Uno DC motor h-gate problems

    Look again...the rails are supplied from the Arduino 3v3 terminal.
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    Help requested to identify common emitter, collector base bjt circuits

    My understanding, and I may need correcting here, BUT....as your diagram shows the load below the transistor emitter, as the transistor starts to turn on, it's emitter voltage would start to rise, turning the transistor off again. These days, it's simpler, easier, quicker, just to use a mosfet...
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    Help requested to identify common emitter, collector base bjt circuits

    Exchange the location of the transistor and load in your diagram. Why try to re-invent the wheel? http://www.learningaboutelectronics.com/Articles/Transistor-switch-circuit.php
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    duel control of actuator via DPDT momentary switch for manual control and remote control via an RF 2ch relay. disabled drivers seat

    Any work such as you describe would need to be certified by the appropriate authority. I would imagine any "builder" would need to have the relative certification clearance as well.
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    beginner- Arduino Uno DC motor h-gate problems

    I do....and I told you. Read #4 again and then traverse to Arduino forum for conformation.
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    beginner- Arduino Uno DC motor h-gate problems

    Told you the problem, now you want to argue about it. Suggest you go on Arduino forum for answer. My bet is the first answer will be the same. When approaching them, make certain you have your code included as well as a circuit diagram of your whole arrangement to save time (they will ask for...
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    beginner- Arduino Uno DC motor h-gate problems

    You cannot power the motor via the arduino. Likely you have fried the regulator in the Arduino or your PC usb trying to do so. Motor must be via separate supply.
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    Generac Smart Management Module Dead

    Best way , or at least one way , when repairing any switchmode supply, is use a 150w floodlight bulb in series with the input. If it's bright, you have a short, if it flickers in and out at low light level, you might be in with a good chance that it's working. I have one permanently connected...
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    Fried speaker component - replaceable?

    yup...bin it.
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