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  1. Kiwi

    Changing a motor's direction each time power is supplied

    Is this better?
  2. Kiwi

    Changing a motor's direction each time power is supplied

    Hope above circuit could be of use to you. Those 20 Series Finder step relays are great. They mechanically change state, and latch, every time you apply an input to A1 and will stay in that state until they receive another input, even if the power is turned off. The Limit Switch could be...
  3. Kiwi

    Modifying 110v device to run on 240v

    Is it possible to get a local electrical shop to wind a new element on the original former?
  4. Kiwi

    Why do battery charger need float charging process

    This should answer your questions on charging lead acid batteries. http://batteryuniversity.com/learn/article/charging_the_lead_acid_battery
  5. Kiwi

    Thermometer accuracy..sensor?

    We use an infrared thermometer at work to measure temperatures on engines etc. It gives an indication of the temperature but is not exact. The type of surface being measured also affects the accuracy of the reading. Great for finding hot spots on connector strips and junction boxes etc.
  6. Kiwi

    High amperage DC-DC down conversion

    The truck starter motor requires very high current. Could easily be 200A - 400A depending on the size of your engine. I can think of two ways that could work; 1 - Fit a 12volt battery bank to start and run the truck. 2 - Connect the truck to 12volts on the 48volt battery bank. Option 1...
  7. Kiwi

    Battery Backup

    You could use a couple of small 12volt SLA batteries in series, but the 24volts from the SMPS won't be enough to keep them charged. Need roughly 27volts(13.5v per battery). What is the minimum voltage the backup batteries have to supply to keep your circuit operating?
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