Hello, Could I ask a question?

Discussion in 'The Projects Forum' started by opalstear, Jun 30, 2010.

  1. opalstear

    Thread Starter New Member

    Jun 21, 2010
    I wonder this circuit is work or not?
    I didn't give any specific parameter value.
    I just want to know.. The concept and circuit is right..
    Could you tell me ? ^_^ thank you so much.~
    sorry for messy drawing. ^^
  2. SgtWookie


    Jul 17, 2007
    Ahhh, nope - it won't work. Sorry.

    You're trying to use N-ch MOSFETs, but no way to get the gate 10v higher than the source terminals.

    You've drawn the body diodes backwards.

    You've put a label next to the three-input OR gate indicating that it's supposed to be a "discharge mode" - but not what it's supposed to discharge?

    You have a six-input AND gate with five inputs disconnected or "floating". This means the output will always be a logical "0", so the output from the inverter will always be a logic "1". However, since the gate of the MOSFET won't go any higher than the supply voltage, the MOSFET will make a nice room heater right until it burns up.

    Over on the right, you have a blob (maybe a resistor?) labeled "Load or charger". Ahh, which is it? Are you trying to make a general purpose supply, or is that going to be an input from a battery charger, or do you want to charge batteries with it? Unfortunately though, the diode to the left of that will act as a short across the "load or charger", and will either cause the supply on the left to burn up, or it will burn up itself.