And when there is low light intensity, its resistance will increase, and it will behave as an open circuit. When there is more light intensity, its resistance is low and acts as a close circuit. It’s a resistor that changes its resistance based on light falls on it. The logic circuit symbols of a two-input AND gate and a three-input AND gate are shown in the following figure. We will use an LDR known as Light Dependent Resistor. terminal block for the Ground pin, the VCC for motor and a 5V pin which can either be an input or output. “ Stop the light bulb to be turning on in Day time using AND logic“ Arduino PWM DC Motor Control Circuit Diagram. Example 2 Rc The lowest input governs the state of a NAND gate. And the same switch should turn ON and OFF the light bulb when there is low light intensity (nighttime). In general, the collector circuit is modeled as a controlled current source ( see. If the light intensity is more, it means its day time therefore, the switch should not work because we don’t need light. The output pin of IC drives the small bulb. A logic gate circuit is designed as follows, where R13 k and R2-4 k, Vcc 6 V, A is input and Y is output. The application of the circuit will be to monitor the light intensity, and there will be one switch. In this example, we will build a simple circuit based on 74HC08. We have come up with a similar real-life application based on AND gate. It has 4 AND gates with two inputs each.ĪND gate can be used in many projects or integrate to achieve specific tasks.Its recommended supply voltage is between 2v to 6v.We will simulate a simple circuit based on this IC to justify the AND gate operation.īefore starting few things to know about 74HC08 IC If V CC is too low, the transistor will not have enough power and the amplified AC signal. V CC is a very important voltage when biasing the transistor because it determines how much the AC signal can be amplified to in the transistor. We will explore 74HC08 Quad AND logic gate IC for this tutorial. V CC of a bipolar junction transistor is the DC voltage that is supplied to the collector of the transistor. CMOS-based IC is very power efficient as compare to TTL-based. The NOT gate is an electronic circuit that produces an inverted version of the input at its output. Connect the inputs to the input switches provided in the IC Trainer Kit. Implement the circuit as shown in the circuit diagram. Connect VCC and ground to respective pins of IC Trainer Kit. It is the latest technology that uses MOSFET for performing AND logic operations. Triple 3-Input AND Gate Procedure Place the IC on IC Trainer Kit. TTL stands for Transistor-Transistor Logic, and it is the earlier transistor-based technology in which transistor is used inside to perform AND logic operation.ĬMOS stands for complementary metal-oxide-semiconductor. First, it is categorized as TTL-based and CMOS-based.Īnd further, it is classified based on the number of Inputs that AND gate has. Many AND gate IC’s are widely used, and they are mainly categorized into two categories. AND gate is also known as the coincidence gate due to this property. Hence digital logic AND gate output will be TRUE if all its input is TRUE.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |