# Circuit Diagram Of Not Gate Using Diodes

By | September 5, 2017

The basic function of a NOT gate is to invert a signal - that is, if the input signal is a logical true or false, the outputted signal is always the opposite. It can be used to switch things on and off, such as when building a circuit board. However, it is possible to create a NOT gate without the use of IC chips or transistors.

Using simple diodes, we can achieve this logical operation. To do this, two diodes must be connected in series with each other, creating what is commonly referred to as a diode-transistor logic (DTL) circuit. This is called a NOT gate because the output is the exact opposite of the input. In other words, if the input is low (false), the output is high (true).

When the input is low, the voltage across the first diode is zero, so it will not conduct. However, the second diode will become forward biased due to the voltage applied to its anode side. This means that current will flow through it, and will thus produce a high voltage at the output. On the other hand, when the input is high, the first diode becomes forward biased, allowing current to pass through it. This prevents the second diode from conducting, and thus the output is low.

In summary, using diodes is an effective way of implementing a NOT gate. This type of logic gate is used in many applications, such as computer memory and applications where binary logic is needed. Because it is relatively easy to build, it is a great option for those who are looking to create a simple circuit.

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