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Recent content by Oscilloscope

  1. O

    +12 volt from -48 volt dc

    We need more information. What's your power supply, a battery, bench top supply, a voltage divider, other? If it's a battery or a bench supply, it does not matter, as long as you connect negative to negative and positive to positive.
  2. O

    Select L and C in a resonant converter

    I'm self thought in electronics; good with digital stuff, but not so much with analog, with that in mind, this is how I do it: To get the most power flowing through RL: 1. Determining the Q needed for the circuit 2. Since inductors are not easily available at a gazillion different values and...
  3. O

    Suggest 9~40V, 5A H-BRIDGE design

    This should work
  4. O

    Need help with choosing and alternator for a robot

    I'll double check with a tachometer, but from the research I've done, off the shelf mowers in the use have a max blade tip speed of 19,000 feet/sec. For my 21" mower that's 3455 RPM, fine for the alternator.
  5. O

    Need help with choosing and alternator for a robot

    Excellent, a standard off the shelf 24v 20/25amp alternator regulator should do them. Thanks for the quick reply. -Mario
  6. O

    How is this power ball of iphone made?

    Lithium Ion battery connected to an iPhone dock connector. The USB cable is connected to the battery's charging input. Pretty easy to make one yourself.
  7. O

    Need help with choosing and alternator for a robot

    Hey guys! First post. I've been lurking around for a while though :grin: I dislike mowing my lawn because here where I live, it's either always too damp when it's not excruciatingly hot and humid to do it, or it's nice and dry but breathing outside is like breathing under water. Plus I have...

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