555 timer
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Charge Pump Circuit - Getting Higher Voltage from Low Voltage Source The situation is simple – you have a low voltage supply rail, say 3.3V, and you want to power something that needs 5V. This is a tough call, especially if batteries are involved. The only apparent way is a switch mode converter, more specifically a boost converter. This is where we hit a roadblock – boost converters are inefficient at low powers,… |
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Simple Curve Tracer Circuit: Tracing the Curve for Resistor, Diode and Transistor Most of electronics deals with Tracing Curves, be it the characteristic transfer curve for a feedback loop, a resistor’s straight VI line or a transistor’s collector voltage versus current curve. These curves give us an intuitive understanding of how a device behaves in a circuit. An analytical approach might involve plugging in discrete… |
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Simple H-Bridge Motor Driver Circuit using MOSFET At the outset, driving a motor might seem like an easy task – just hook the motor up to the appropriate voltage rail and it will start rotating. But this is not the perfect way to drive a motor, especially when there are other components involved in the circuit. Here, we will discuss one of the most commonly used and efficient ways to drive DC motors, the H-Bridge circuit.… |
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Frequency to Voltage Converter Circuit Frequency to voltage converter converts the frequencies or pulses to the proportional electrical output such as voltage or current. It is an important tool for electromechanical measurements where repeated events are occurring. So, when we provide a frequency across a frequency to voltage converter circuit, it will provide a proportional DC output. Here we are using KA331 IC… |
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Sawtooth Waveform Generator Circuit In electronics, waveforms are mostly plotted against voltage and time. The frequency and amplitude of the signal can vary according to the circuit. There are many types of waveforms, like sine wave, square wave, triangular wave, ramp wave, sawtooth wave etc. We have already designed sine wave and square wave generator circuit. Now, in this tutorial we will show you, how to… |
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24V Flasher Circuit Different Electronic systems operate in different level of voltages. Most commonly the digital electronic systems like microcontrollers and microprocessors operate in 5V or 3.3V. Industrial Level Control devices like PLC, HMI etc. have an operating voltage of 12V, 24V etc. The loads (LED indicator) and sensors, that are used to interface with a PLC, also have a nominal… |
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8051 Microcontroller based Frequency Counter Frequency is defined as number of cycles per second. It can also be defined as reciprocal of total time ‘T’. In this project we are going to count the number of pulses entering into Port 3.5 of 8051 microcontroller and display it on 16*2 LCD display. So basically we have measuring the frequency of signal at Port 3.5 of 8051. Here we have used AT89S52 8051 chip, and a… |
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Frequency Divider Circuit using 555 Timer and CD4017 Frequency Dividers are the circuits which divide the input frequency by n (any integer number), means if we provide some signal of frequency ‘f’ then the output will be the divided frequency ‘f/n’. Frequency dividers are very useful in analog as well as digital applications. Here we are building the circuit to divide the frequency by 2 or 4. In this… |
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Wireless DC Motor Speed Control using IR Remote and 555 Timer IC In this project, we are going to Control the Speed of Dc Motor Wirelessly Using IR or TV Remote Control. Here we are not going to use any microcontroller. We have used basic components along with 555 Timer IC to complete this task. This circuit can control the DC motor speed in 5 different levels and any IR remote like TV/DVD remote etc can be used to control it. … |
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Ding Dong Sound Generator Door Bell Circuit using 555 Timer Door Bells are available in lot of variations in market which generate different sounds but the most common sound of a Door Bell is “Ding Dong”, so this time we have decided to make a Door Bell Circuit with a Ding Dong sound by using 555 timers. Components Required: 555 Timer IC -2 Speaker Bread Board Resistors 330ohm, 2k, 10k ohm 50k… |
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Fridge Door Alarm Circuit using 555 and LDR The name of the circuit itself infers the application. This circuit triggers the alarm if the door of Fridge is left open for the long time. When the door of the refrigerator is left open, the temperature inside the cabin will increase. This rise in temperature will be sensed by thermostat and try to cool down the cabin. It will always try to maintain constant temperature of… |
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School/College Quiz Buzzer Circuit using 555 Timer IC Quiz is an important event in any school/College institution to test the knowledge of the participants. In order to increase the difficulty, the spontaneity of the participants is also tested in which the reaction time of the participants also matters. So, to indicate the person who is ready first to answer the question has to push the buzzer. It is also hard for a judge or… |
