VLSI

JBJDFS

Comments

Post a Comment

Popular posts from this blog

Air flow detector circuit

Image
Air flow detector circuit Description. This circuit can give a visual indication of the rate of air flow.It can be also used to check whether there is air flow in a given space. The filament of a incandescent bulb is the sensing part of the circuit.When there is no air flow the resistance of the filament will be low.When there is air flow the resistance drops , because the moving air will remove some of the heat generated in the filament.This variations in the resistance will produce variation of voltage across the filament.These variations will be picked up by the opamp (LM339) and the brightness of the LED at its output will be varied proportionally to the airflow. Circuit diagram with Parts list. Notes. The filament L1 can be made by removing  the glass of a 40W incandescent bulb. The circuit can be powered from a 12 V DC power supply.
Keep reading

Water Level Controller using 8051 Microcontroller

Image
Water Level Controller using 8051 Microcontroller Contents  0.1  Water Level Controller using 8051 Circuit Principle: 1  Water Level Controller using 8051 Circuit Diagram: 1.1  Water Level Controller using 8051 Circuit Design: 1.2  Algorithm for Water Level Controller Circuit: 1.3  Water Level Controller using 8051 Circuit Simulation Video: 1.4  DOWNLOAD PROJECT CODE 1.5  How to Operate Water Level Controller Circuit using 8051 Microcontroller? 1.6  Water Level Controller Project Output Video: 1.7  Water Level Controller Circuit Advantages: 1.8  Applications of Water Level Controller Circuit using 8051: 2  Related Articles This article explains you how to detect and control the water level in an overhead tank or any other container. This system monitors the water level of the tank and automatically switches ON the motor when ever tank is empty. The motor is switched OFF when the overhead tank or con...
Keep reading

Battery charger circuit using Battery charger circuit using SCR.

Image
Battery charger circuit using SCR  Description. A simple battery charger based on SCR is shown here.Here the SCR rectifies the AC mains voltage to charge the battery.When the battery connected to the charger gets discharged the battery voltage gets dropped.This inhibits the forward biasing voltage from reaching the base of the transistor Q1 through R4 and D2.This switches off the transistor.When the transistor is turned OFF,the gate of SCR (H1) gets the triggering voltage via R1 & D3.This makes the SCR to conduct and it starts to rectify the AC input voltage.The rectified voltage is given to the battery through the resistor R6(5W).This starts charging of the  battery. When the battery is completely charged the base of Q1 gets the forward bias signal through the voltage divider circuit made of R3,R4,R5 and D2.This turns the transistor ON.When the Q1 is turned ON the trigger voltage at the gate of SCR is cut off and the SCR is turned OFF.In this condition a very smal...
Keep reading