On 2/19/2013 1:00 PM, EVDL Administrator wrote:
Isn't the forward voltage drop of a silicon diode about 0.7v?
It isn't constant; it varies with the current. The diode's data sheet
will show the forward voltage drop versus current.
For example, here is the typical voltage drop versus current for a
common 1N4001 (50v, 1 amp) series diode.
0.6v at 1ma
0.7v at 10ma
0.8v at 100ma
0.9v at 1000ma (1 amp)
The worst-case voltage drop can vary +/-0.1v from these nominal values.
The voltage also drops as temperature rises (at a rate of about 2.2mv
per deg.C. This is typical behavior for all silicon diodes.
--
Humanity is acquiring all the right technology for all the wrong
reasons. -- R. Buckminster Fuller
--
Lee A. Hart, http://www.sunrise-ev.com/LeesEVs.htm
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