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Recent content by jumbodas

  1. J

    Modelling Diode reverse recovery remaining charge after peak negative current.

    Basic spice diode model uses diffusion capacitor to account for reverse recovery. However a capacitor can't have stored charge at zero potential. As a result spice model snaps to zero current as soon as peak negative current is reached as this coincides with diode reaching to zero potential...
  2. J

    Thermal Paste Dispenser

    Can someone suggest a simple desktop or handheld precision volume thermal paste dispenser. Automatic or manual. dispensing 10~100 uL with resolution of 10 uL. Precision is only required for thermal paste volume not dispense location. Dispense location is managed by operator. Thanks, Jumbodas
  3. J

    Protecting chip inputs from power up transients

    Lots of chip have spec for pin voltage limits for example as <Vdd+1V . let us assume at power up of system a this chip supply is kept off or is slow to rise. So the other chip sending input to off chip has powered and outputs logic high. Will it damage the off chip? Will the chip damage...

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