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    Running a UK 230V system at 220V in the US

    The voltage measurements shown indicate an MEN system of wiring of the mains supply. + or - 5% is fairly standard for many supply authorities, and if you asked for better specs, they'd probably tell you to go jump in the creek or generate your own. Rather difficult to operate a high current draw...
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    High Voltage component

    Mmm, good educated guess on your part. Just goes to show that studying theory always pays sooner or later.
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    Cordless 1500 Watt Hand-held Blow Hair Dryer

    The way Dewalt and others get around having a large battery is to locate it in the lower part of the handle away from where one holds the device. In the base if you like, but no way around heavy batteries except to say the new 4Ah lithium are much lighter that the older nicads.
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    High Voltage component

    Could also be transient voltage suppressors (TVR) ....... quite a good read here...... www.google.com.au/patents/US7944669 Edit:..If link doesn't work just put the number into a google search......
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    How to debug a halogen ceiling fixture

    Being a qualified electrician, I offered the advice on experience and knowledge gained over 40 odd years in the industry. I have in that time seen many near fatalities caused by actions such as you have attempted and I feel it is my duty to warn people such as yourself. Far be it from me if you...
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    High Voltage component

    Inductors perhaps..??
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    Timer relay, to turn pump on, and then off

    Yes, well you kind of lost me now with reference to electricity as energy source and propane as heat loss. By my calculations, 10 gallons in a 3/4" pipe would run 142 metres or 466 ft so it must be a long house you have there. As I see it you would be better off with a system at each end of the...
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    How to debug a halogen ceiling fixture

    It's obvious you were out of your depth trying to replace switches so not much hope when it comes to fault finding. I'd suggest you leave it to a professional before you zap yourself or worse, someone else.
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    I would like to have an LED timer made

    He obviously wants someone to make it for him.
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    Timer relay, to turn pump on, and then off

    I've seen water circulation systems used in hospitals and the like. There is a massive loss involved in heat transfer (even with insulation ) so not a very efficient system as far as saving a dollar. It does maintain hot water at each outlet but in your application, when you turn your pump off...
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    Timer relay, to turn pump on, and then off

    How does water flow in the beginning if it needs the pump to creat the flow in the first place? I have seen circuits that rely on a pulse or momentry switch closure to initiate and then the flow switch keeps the pump running in bypass mode. Safety flow switch if you like , not difficult to...
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    How to determine what resistor to use to reach the desired amperage?

    No need for any resistors. The motors will draw only what they need. You will NOT however run "a bunch of these motors" as just this one is already 70% of the loading that your 1A power supply will handle.
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    Traxxas 2018 Standard Servo control

    Analogue pulses...????
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    Beginner Circuit Help

    Don't know if you realise it or not, bt you are still trying to join two devices in one hole.
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    Using a potentiometer to control the speed of an electromotor

    Go back to ebay and look for a simple DC speed control. They usually come complete and delivered for around $5-$6. You would not even think about building one for that price. As to quality, I have had a similar one driving an auto-feed on my Myford ML10 for years now without a problem...
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    Beginner Circuit Help

    Would be better to run the traces vertical and cut between components. Either that or use as you have now but use 2 sets of holes per LED array and cut all tracks vertically between them. As an example you need 2 holes per junction, not one as you show. If you plan to run all those LEDs from a...
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    need help converting an ATX PSU to bench power supply.

    Sounds to me like you are connecting into mains wiring which is potentially fatal. I asked you to show what connections you have made but if you cannot then I can only comment that you leave it to an electrician with experience.
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    speed control problem for helicopter

    When descrete components were used in electronics, it might have been possible to adapt different circuitry. These days with miniature circuitry, almost impossible to "tap into and change". Think you need to get a better understanding of what you are trying to achieve as it appears you are in...
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    need help converting an ATX PSU to bench power supply.

    I do believe you have your connections completely wrong so.......... Show what you have connected and for ****** sake, don't power anything up just yet............ Note that pics of your model car, however taken you are with their appearance, does not help here.
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    seeking explanation on basic led flashing circuit

    So , what is the difference between "ideal" and "realistic" ....just curious..o_O
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