What is diode current formula?
The diode current equation expresses the relationship between the current flowing through the diode as a function of the voltage applied across it. Mathematically the diode current equation can be expressed as: V is the voltage applied across the diode, η is the (exponential) ideality factor.
How is current formula derived?
If the voltage (V) and resistance (R) of any circuit is given we can use the current formula to calculate the current, i.e., I = V/R (amps).
What is diode current?
Fundamentally, a diode is a component that permits current to flow in a single direction and blocks it in the other direction. Diodes allow current to flow in one direction without the effects of any impedance, while entirely blocking all flow of current flow in the other.
What is PIV of a diode?
Peak Inverse Voltage (PIV) or Peak Reverse Voltage (PRV) refer to the maximum voltage a diode or other device can withstand in the reverse-biased direction before breakdown. Also may be called Reverse Breakdown Voltage.
How do you calculate the value of a diode?
Diode Resistance Formula Diode resistance is equal to the thermal voltage, VT, divided by the current, Id, passing through the diode. The thermal voltage of the diode is approximately 25mV at 300K, which is a temperature that is very close to room temperature.
How is electric current generated?
To produce an electric current, three things are needed: a supply of electric charges (electrons) which are free to flow, some form of push to move the charges through the circuit and a pathway to carry the charges. The flow of electricity can be likened to a flow of water through a pipe.
How do you find electron current?
Electrical current is the flow of charge through a circuit. It is defined as the number of coulombs (1 Coulomb = 6.25 x 1018 electrons) of charge passing a point per second. Electric current has the symbol I and the unit A (Amps). It has the equation, I = Q/t.
Why diode current is exponential?
The Diode Current–Voltage Relationship If the voltage increases, the forward current will increase, and in this way, a diode is similar to a resistor: more voltage leads to more current. This occurs because the relationship between a diode’s forward voltage and its forward current is exponential rather than linear.
What is PIV value?
What is diode current equation?
Diode current equation expresses the relationship between the current flowing through the diode as a function of the voltage applied across it. η is the (exponential) ideality factor.
What are the I0 parameters of a diode?
They are. I0, the Dark Saturation Current. Dark saturation current indicates the leakage current density flowing through the diode in the absence of light (hence, ‘dark’). This parameter is the characteristic of the diode under consideration and indicates the amount of recombination which occurs within it.
What are the factors affecting the value of a diode?
However, its exact value for the given diode depends on various factors like electron drift, diffusion, carrier recombination which occurs within the depletion region, its doping level, manufacturing technique and the purity of its materials. In addition, its value is also seen to vary with the value of current and voltage levels.
What is the quantitative theory of the PN-diode currents?
Quantitative Theory of the pn-Diode Currents ൯𝐼 = 𝐼 ���� (0) + 𝐼 ���� (0 𝐼 = 𝐴��𝐷 �� �� ���� 𝐿 �� + 𝐴��𝐷 �� �� ���� 𝐿 �� exp ( Τ𝑉 𝑉𝑇) − 1 𝐼 = 𝐼0 exp ( Τ𝑉 𝑉𝑇) − 1 𝐼0 = 𝐴��𝐷 �� �� ���� 𝐿 �� + 𝐴��𝐷 �� �� ���� 𝐿 ��