This is a simple demonstration of a diode. In a resistor, current and voltage are proportional (by Ohm's law). In the case of a diode, current and voltage have an exponential relationship. Current flows from the supply voltage through the diode to ground. The supply voltage can be adjusted with the “Voltage” slider on the right. Normally the current is not impeded if the supply is negative (if the diode is reverse-biased). If the diode is forward-biased, very little current flows if the supply voltage is less than 0.6 V. When the voltage exceeds this value, the current increases exponentially.
This page is a utility for simulating диод online with specified initial values.











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