555 Timer Circuits
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The circuit described here counts the number of times that an infrared beam is interrupted. It could be used to count the number of people entering a room, for instance, or how often a ball or another object passes through an opening (handy for playing.... -
In this circuit the 555 timer is used in a novel way, as a voltage controlled switch.The old and omnipresent NE555 can be very good at someth.... -
sir, we are very much interested in design of jammer circuit, even we started working on it but there is some problem with our circuit i.e signal is not getting jamm.... -
This is danger beep circuit. It use 555 integrated number circuits build to are a stable mutivibrator that be valuable duty cycle 5% driver loudspeaker.... -
If you want to build a 10 LED Chaser circuit we suggest this circuit first. It uses popular IC is a simple and affordable IC-4017_decade counter and.... -
This is Circuit MOSQUITO REPELLANT. By High Frequency Sound. Use a electronics part ,easy to find and low cost. To See Circuit, have IC 555, 4017,.... -
Many a person will might excited with siren sound the all that ever hear. Because we will hear when there is an accident emergency event. But ever suspect that.... -
This circuit Simple DC to DC Converter For Digital Circuit. It use Volt supply 5V Only, To Output Step up Volt 10V-12V DC max. I use IC 555 ( hot ic Timer) for.... -
This is a simple pulse generator circuit or standard astable oscillator circuit for IC 555 timer,NE555N IC. Use for.... -
This be the circuit sets the time to model is simple,at can fix the time had long ago and have tall good accuracy. By use pillar equipment be IC CA3140 for.... -
This circuit is DC Dimmer Circuit. By use IC LM555 be model Astable Multi vibrator. It is can change translate Duty Cycle with fining VR1 and VR2 be.... -
The super dimmer it is certainly better than the normal dimmer you are using now. It would be better, however, to try to prove it. Let`s see how it works.... -
This cheap frequency meter circuit that we show to you. Suitable for general use in small laboratories. Because cheap, easy to build. And Qualified enough. For applications most of the electronics amateur. It can be shown that the frequency read directly.... -
This be Simple Doubler Voltage circuit, from voltage 12VDC to be 24VDC. By use Timer IC highly popular the number NE555 and other equipment a little again. It can give current get about 50mA convenient for the circuit, that use low current the small-sized..... -
Most timer circuits. Often used with electrical transformers containing low as 9V and 12V, and use of electrical control relays.but the 1-15 minute timer.... -
This is a very simple 555 timer circuit,It make a simple theft detterant which may be just as effective. The idea is to have a flashing red led indicate that your car is protected. This device can protect your vehicle from potential thieves.... -
Utility vehicle anti-theft alarm circuit as shown. It is mainly composed of two major anti-theft alarm circuit parts and components. Security circuit: When the car owner left the car, it will be placed on anti-theft switch S B, and make the.... -
On astable multivibrators, the duty cycle is usually fixed unless there`s a potentiometer in place, but even still with a diode in parallel with R2, you will only get a duty cycle less than 50%. Also, to ask a question in a new thread, youcan click here..... -
The objective is to make a small light that is activated by motion and will remain on for 20 seconds and then deactivate. i. e. you pick up the light it illuminates youput it back down and it remains on for 20 seconds then turns itself off. until it is.... -
Some simple 555 and flip flop circuits to add electronic lighting effects to "modernize" the games. I`m collecting quite a few for different aspects of the game - i. e. idle, flipper shot, flowers open, winning shot etc. I have a few hundred LED`s, 20.... -
I got frustrated and decided to hook it up to a 15v supply and jump R3 with a clip-on soldering heat sink. 555`s smell great when you fry`em. I have about 9 more tries before I run out of parts, but for now I will seek help in the forums and stick to the.... -
Well i posted a similar circuit in another topic but a lot has changed in the design. So here is a brief story of what i am doing, actually i am in a project where i have to design a circuit which can be used to trigger solenoid valves for the airbags in the.... -
You might find yourself needing a low power H bridge for driving a motor like I once did. The 555 IC can drive a load up to 200mA, source or sink, which might make is usable as a driver, if one can control the output as desired. Although it is an unusual use.... -
This 12V power inverter circuit can be used to power small power devices that need a 240 volts. This 12V power inverter circuit is very useful when you want to use a 240 volts consumer powered by a 12 volts car battery. In contrast to the usual feedback.... -
This 555 timer circuit temperature monitoring system electronic project can be monitor temperature in up to four points. Using this 555 timer circuit temperature monitoring system electronic project can be choose if the alarm should be triggered when.... -
This 555timer clap switch circuit electronic project is designed using some common electronic parts. This 555 timer clap switch circuit electronic project operates from a distance of up to 10 meters from the microphone. Signal from microphone is amplified by.... -
This door minder electronic project is based on a 555 timer circuit and uses an IR beam to monitor door and passage-ways or any other area. When the IR beam is broken a relay is tripped which can be used to sound a bell or alarm. This door minder electronic.... -
This LED Flasher circuit is based on the 555 timer IC. The LED Flasher circuit diagram is very simple and require few external components. When the circuit is working the red LEDs will flash at a set frequency one by one like at the railway crossing.... -
Using this 555 timer DC motor control electronic project you can control speed of a 6 volts DC motor, by simply rotate left or right the 50 k potentiometer. .. -
Speed regulation is accomplished by sensing the motor current with R17 and using it as positive feedback to compensate for motor resistance loss. The gain pot should be set to a point just below the point where the motor speed oscillates. After finding this.... -
This door open alarm electronic project is designed using an linear hall effect device and a 555 timer circuit. This door open alarm alarm electronic project is based on the TL3103 linear hall effect device used for detecting the angle of rotation. The.... -
This smoke detector is designed using 555 timer circuit and some common electronic components. The photo interrupter module is used as the smoke detector, while timer 555 is wired in astable configuration as an AF oscillator for sounding alarm via a....
New Circuits
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This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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