thanx bro. Is datasheet given in Ltspice??Yes - the current in your sim is very small. The datasheet shows a 0.7 knee at If = 10mA, which in your circuit would be provided by a 2k resistor.
and also is it necessary to show the knee voltage = 0.72V.thanx bro. Is datasheet given in Ltspice??
and also when i tried 2k resistor i m not getting correct result, so i used resistor of around 0.1k , and so i m getting correct value now.
is this count as a right or wrong, ??
It counts as incomplete. You need to explore a much wider range of values. In particular you must extend the potential current to 10 mA and beyond. Like this:is this count as a right or wrong, ??
and so, it is not necessary to go along with datasheet, right?
so when i am using resistor in ckt, i have to adjust resistor value such that it explores wide range of values of current or to get the desired knee voltage(0.7V) , right?It counts as incomplete. You need to explore a much wider range of values. In particular you must extend the potential current to 10 mA and beyond. Like this:
At about 0.72V forward bias the current is in excess of 16.36 mA. At ≈12 mW of power dissipation it won't even get warm.
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That is not usually what you do. Normally you decide on what current you want in the diode and let the forward voltage be whatever it needs to be. In a career spanning half a century I've never seen somebody try to design a diode to operate at a particular forward voltage. Since every diode is different, this is a ridiculous goal, which cannot be achieved in practice. The point on the IV curve where the diode conducts a substantial current, like 10 mA, is not called the KNEE. It is just called the forward voltage. A KNEE occurs in a REVERSE BIASED Zener diode.so when i am using resistor in ckt, i have to set the values such that it
so when i am using resistor in ckt, i have to adjust resistor value such that it explores wide range of values of current or to get the desired knee voltage(0.7V) , right?