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dobry_den said:Oh I see, so the diode with 4.4V voltage drop is reverse biased then...? shame on me for not noticing that... And btw, when using the constant-voltage-drop model for a diode, does it also mean that the voltage drop across the resistor is also constant since it is connected with the diode in a series..? and to your question - i think i don't know what limits the reverse bias voltage across a diode.
A diode AND gate is a type of logic gate that uses diodes to perform the AND operation, which is a basic logic operation that outputs a high signal only when all of its input signals are high.
A diode AND gate works by connecting two or more diodes in series, with each diode representing an input signal. When all of the input signals are high, current can flow through the diodes and the output will be high. If any of the input signals are low, the current will be blocked and the output will be low.
The voltage drop in a diode AND gate refers to the amount of voltage that is lost when current flows through the diodes. This voltage drop is typically around 0.7 volts for silicon diodes and 0.3 volts for germanium diodes.
The voltage drop in a diode AND gate can affect its performance by reducing the voltage available at the output. This can lead to a smaller voltage swing between the high and low output levels, which can affect the reliability and speed of the gate.
Some advantages of using a diode AND gate include its simplicity, low cost, and high reliability. It also has a wide range of applications in digital circuits, such as in multiplexers, encoders, and adders.