LED Strobe Light Circuit with NE555 Tutorial
13 هزار بار بازدید -
6 سال پیش
-
Hi, today we see how
Hi, today we see how a Strobe Light works.
For this project I decided to use the famous NE555 IC..
The basic operation of the circuit is: The 555 timer IC works as an astable multivibrator and generates a frequency, the square wave output drives the three LEDs. The flashing frequency is adjust by a 47uF electrolytic capacitor and a 10K potentiometer is used to adjust the *Duty Cycle. The output signal from 555 is brought directly to the LEDs, which must be connected in parallel, each with its own resistance. Another very important feature is the maximum output current of the NE555 (200mA) this makes us understand that we can add more than three LEDs, because each LED absorbs about 20mA.. but do not put more than 10 LEDs otherwise you risk to damaging the NE555 IC.
* What is Duty Cycle in NE555 timer?
A duty cycle or power cycle is the fraction of one period in which a signal or system is active. Duty cycle is commonly expressed as a percentage or a ratio.
The mark to space ratio of a square wave or pulse oscillator is often referred to as the Duty Cycle. This is a more useful term when the purpose of an output wave is to drive some device such as a motor. Changing the duty cycle changes the average DC voltage or DC current level of the output, and hence the power supplied to control the speed of the motor. This is also important in driving output devices such as lamps, heaters and many others. The Duty Cycle is a term that describes the percentage of each cycle taken up by the active or high period.
■ Components:
- 1x NE555 Timer IC
- 3x White LEDs
- 1x Red LED
- 3x 330 Resestors
- 2x 1K Resistors
- 1x 100 Resistor
- 1x 10K Trimmer/Potentiometer
- 1x 1N4148 Diode
- 1x 47uF@25V Electrolytic Capacitor
- 1x 10nF Polyester Capacitor
- Power at 9V DC
- Current consumption: 50mAh
- Electric diagram at 3:00
- NE555 Datasheet: http://www.ti.com/product/NE555
■ Do you want to Make a PCB?
Look this: Vu-Meter 20 LEDs LM3915 - PCB TUTORIAL
► My Electronics Creations: https://goo.gl/k1PN4A
► More videos: stefano91ste
WARNING: The following video contains flashing lights imagery that may cause discomfort and/or seizures for those have photosensitive epilepsy.
WARNING: This video is only for demonstration. I don't take any responsibility for damage to things, people and animals.
#ElectronicProjects #NE555 #StrobeLight
For this project I decided to use the famous NE555 IC..
The basic operation of the circuit is: The 555 timer IC works as an astable multivibrator and generates a frequency, the square wave output drives the three LEDs. The flashing frequency is adjust by a 47uF electrolytic capacitor and a 10K potentiometer is used to adjust the *Duty Cycle. The output signal from 555 is brought directly to the LEDs, which must be connected in parallel, each with its own resistance. Another very important feature is the maximum output current of the NE555 (200mA) this makes us understand that we can add more than three LEDs, because each LED absorbs about 20mA.. but do not put more than 10 LEDs otherwise you risk to damaging the NE555 IC.
* What is Duty Cycle in NE555 timer?
A duty cycle or power cycle is the fraction of one period in which a signal or system is active. Duty cycle is commonly expressed as a percentage or a ratio.
The mark to space ratio of a square wave or pulse oscillator is often referred to as the Duty Cycle. This is a more useful term when the purpose of an output wave is to drive some device such as a motor. Changing the duty cycle changes the average DC voltage or DC current level of the output, and hence the power supplied to control the speed of the motor. This is also important in driving output devices such as lamps, heaters and many others. The Duty Cycle is a term that describes the percentage of each cycle taken up by the active or high period.
■ Components:
- 1x NE555 Timer IC
- 3x White LEDs
- 1x Red LED
- 3x 330 Resestors
- 2x 1K Resistors
- 1x 100 Resistor
- 1x 10K Trimmer/Potentiometer
- 1x 1N4148 Diode
- 1x 47uF@25V Electrolytic Capacitor
- 1x 10nF Polyester Capacitor
- Power at 9V DC
- Current consumption: 50mAh
- Electric diagram at 3:00
- NE555 Datasheet: http://www.ti.com/product/NE555
■ Do you want to Make a PCB?
Look this: Vu-Meter 20 LEDs LM3915 - PCB TUTORIAL
► My Electronics Creations: https://goo.gl/k1PN4A
► More videos: stefano91ste
WARNING: The following video contains flashing lights imagery that may cause discomfort and/or seizures for those have photosensitive epilepsy.
WARNING: This video is only for demonstration. I don't take any responsibility for damage to things, people and animals.
#ElectronicProjects #NE555 #StrobeLight
6 سال پیش
در تاریخ 1397/11/24 منتشر شده
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