Sep 21, #Working and pin configuration of the #NAND #IC CD A door opening indicator circuit using IC gate IC and working of NAND gates. CD TRUTH TABLE. The CD is the most used CMOS chip. The CD IC has 4 gates and these can be wired to create a BUFFER, Inverter (NOT) . ooÕoo This article starts with a detailed look at the operation of the Cmos It then considers the practical use of the IC in the small alarm circuit on the .

Author: Ararr Mitilar
Country: Cameroon
Language: English (Spanish)
Genre: Politics
Published (Last): 21 January 2009
Pages: 49
PDF File Size: 3.48 Mb
ePub File Size: 2.86 Mb
ISBN: 243-7-65392-586-6
Downloads: 72601
Price: Free* [*Free Regsitration Required]
Uploader: Kabar

This IC was used since it withdraws only small power and also reduces the complexity of the circuit.

Notify of all new follow-up comments Notify of new replies to all my comments. Thus, we can cd0411 out all logic levels. Quote and Order boards in minutes on: This circuit is as basic as it gets for a NAND gate circuit and it demonstrates all the possible input values that a NAND gate chip can receive and output. The output pins of the IC are 3,4,10,11 and input pins are 1,2,5,6,9,8,12, Closing a door will input level 0 and output level 1 causing bulb to light.

The quad NAND gate chip can be obtained very cheaply from a number of online retailers for just a few cents. If the door was open or it is not properly shut, logic 0 is applied to the gate input.


This makes the bulb cd011 glow indicating that the door is not properly shut.

How to Build a NAND Gate Logic Circuit Using a 4011 Chip

When the door was closed push button switch, it apply logic 1 to the gate input. The following two tabs change content below. Frank Donald June 14, 1 Comment. However, in this circuit, we will just use one NAND gate, to make the circuit as simple as possible. When either one or both of the pushbuttons are pressed, the NAND gate will output a logic HIGH or 1and the load connected to output will be powered on.

This way, we can see what combinations of inputs will make the NAND gate be off and what inputs make it turn on.

Working of CD IC – Gadgetronicx

The corresponding input pin will now be grounded and its logic level will change to a logic LOW now that it makes contact down to ground. N4 was wired independently and there is no dependency on other ix.

Here in this circuit the input pins of the are connected to the supply voltage directly as shown in the diagram. The combined action of the these four gates form the working of this IC CD And these situations comprise all the situations that can arise for a 2-input NAND gate. These resistors function as pull-up resistors. Each output can deliver output current of about 10mA at 12V but this range can reduce as the power supply voltage reduces.


This circuit was wired as a door open indicator which indicates the opening of door using cd011 bulb which was connected to the output pins of the gates.

In our circuit, we will use both of these cases. There we can see that the NAND gate gives a high output to all the input states except the input states 1,1. The pinout of the is shown below, so that you can see how to connect it in the circuit. Latest posts by Frank Donald see all. We can see the state of the output pins with the assigned inputs in the truth table given above.

So the LED will turn on in this case. When we press down on a pushbutton, it changes to a logic level of LOW. One place it can be obtained from is Tayda Electronics at the following link: When a pushbutton is pressed down, the pushbutton now makes contact across to ground. Each NAND gate has two inputs and one output.

For this circuit, we will connect pushbuttons to the 2 inputs of the NAND gate.