Re: [CAD_CAM_EDM_DRO] Re: Toroidal transformer ratings?? What after being rectified?

Polaraligned wrote:

>An ideal diode has a perfect linear response. In reality the graph
>of diode current vs. diode voltage is non-linear in the portion
>leading up to a forward bias of .7 volts or so. Once it reaches
>that point the graph it is perfectly linear. Unless you are doing
>small signal analysis, this very small non-linear response region
>is of no consequence in power supply design, and the device response
>can be considered perfectly linear.
>

This is basically totally wrong.
An ideal diode is modeled as a step function - 0 below the breakdown
voltage, 1 above that value (or the other way around if you're looking
at "effective resistance"). That is a non-linear function.

Beyond the breakdown region, the current increases exponentially
relative to voltage. This is also a non-linear function. You can get
close to a linear approximation if you use an infinite slope - ie, a
vertical line on a current vs voltage graph.

- Steve