LED Circuits
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Installing LED strips in car`s tail lamps to convert it from conventional bulbs to LEDs. This is the product I`m planning on working with and I need a length of 16", 15" and 14" to make then look correct in my housings. When I did the math the 19. 7" strips.... -
Take the voltage output from a 3. 5mm audio jack and have it light up an LED according to it`s voltage. I was going to attach the left audio cable to the base of a 2222n transistor which would act as my amplifier to trigger the LED to light. Unfortunately,.... -
As I am using a Common Cathode led-strip instead of a Common Anode one as used in the above link thus I came up with this `modified circuit`. Because my experience with FETs was nihil this didn`t actually work as I would need at least a voltage => Vcc to.... -
The LED is 3V, and according "to the internet" (there was no manufactorer info on it) a blue LED usually supports up to 0. 03A. Since I have spare current from the USB I thought I should build a parallel circuit. Now, the last class on circuits I had was on.... -
The circuit works like this: Normally the LED is powered dimly through R1 and R3. SW1 is the spring and wire based accelerometer I mentioned earlier. When SW1 is closed, C2 quickly charges up (at a rate defined by R2) and is discharged through R3 and the.... -
A circuit which basically connects the line out (audio output) of a music playing device to a set of LEDs (actually a huge strip of around 200 LEDs), so they flash in time with the music (from internet tutorials - I`m a bit of beginner). My circuit works.... -
This project flashes eight LEDs in an apparently random manner. It uses a 4026 combined counter and display driver IC which is designed for driving 7-segment LED displays. The sequence is not really random because seven of the LEDs would normally be the.... -
An astable multivibrator, often called a free running multivibrator, is a rectangular wave generating circuit. The circuit doesnt need any triggering. The timing of the circuit is determined by the resistors and the capacitors used in it. The details of the.... -
this verified project provide idea, circuit and working of the system LED display temperature indicator. Digital temperature indicator.using V/F converter.various electronics project... -
Basically this circuit is similar to some flasher circuits already published in using IC555 as a free running multivibrator. The only difference lies in the way it flash using bi-colour LEDs. When output at pin 3 of IC 555 goes high it operates on group of.... -
Various techniques can be used to control the speed of a dc motor, such as using the phase-locked-loop principles, digital inputs, or analog inputs. If desired, the speed of the motor may also be monitored with LED or LCD displays. The project digital DC.... -
LED indicator in this project can be use in the bike indicator or car direction indicator. Time 555 and BCD 7490 are use with few resistors more than 100+ electronics projects... -
The circuit consists of three parts. The first part has an oscillator while the second has mod 16 counter 7493. The oscillator is wired in self-triggered mode, and the potentiometer VR1 is used for speed control of the running lights. That is, frequency can.... -
This circuit yearn for act the performance of the equipment, otherwise Check the fuse here the circuit. The circuit is diminutive and the power supply voltage of all kinds. It demonstrate with LED, 2-color in individual. Which is cathode universal kind, the.... -
This circuit LED reproduces the first LED sequence at this time used by FISA on behalf of Formula single racing. It may perhaps be alive used with slot car sets (such for example HO shin up AFX/Life Like/Tyco sets) or else means of communication controlled.... -
2SC1815 Flip Flop LED Flasher Suite A very simple and very easy to understand.... -
Catalyst Semiconductor, Inc. (NASDAQ:CATS)a supplier of analog, mixed-signal and non-volatile memory semiconductors, announced it has received a patent for a unique step-down switching regulator circuit architecture applicable to step-down regulators for.... -
VU LED indicator is simpler and smaller than their analog, and very common in audio equipment. This version is based on National Semiconductor IC, and using the logarithmic version. Each LED operates with a 3dB difference from before, and the jumper is.... -
This is a low power voltmeter circuit that can be used with alternative energy systems that run on 12 and 24 volt batteries. The voltmeter is an expanded scale type that indicates small voltage steps over the 10 to 16 volt range for 12 volt batteries and.... -
A voltage ranging from 6 V to 15 V is supplied if only one LED per module is used. The increase in the number of LEDs also corresponds to the increase of voltage supply and the connection of additional LEDs should be in series. The maximum allowed voltage is.... -
In this page we will introduce a great project designed by Toon Beerten. His project named "DIY Led Mood Lamp" can become a very interesting add-on for your room that`s absolutely sure it will impress everyone. As you can see on the photos, we talk about a.... -
Wanting to use two white LEDs, the second device must be wired across the Emitter of the transistor and negative ground with its own limiting resistor wired in series, like R15 and D3 in the circuit diagram. If common red, yellow or green LEDs are required,.... -
The bi-directional sequencer uses a 4 bit binary up/down counter (CD4516) and two "1 of 8 line decoders" (74HC138 or 74HCT138) to generate the popular "Night Rider" display. A Schmitt Trigger oscillator provides the clock signal for the counter and the rate.... -
This is a high quality RF signal meter based around the Analog Devices AD8313 0. 1 GHz - 2. 5 GHz logarithmic detector IC. It is capable of detecting signals as low as -80 dBm. When combined with 2. 4 GHz or 915 MHz bandpass filters, it makes a quick visual.... -
It`s a very useful circuit which when installed on your car gives the voltage of you car battery in a LED dot display form. The meter circuit is based on four comparators made of quad op amp LM324. The inverting inputs of IC are kept at at reference voltages.... -
This be LED VU Meter by IC LM3914 circuit show with LED convenient for the stereo or sound all signal. This easy circuit again because use IC LM3914 show get 10 the level. Build easy because use the integrated circuit just one and the price is inexpensive..... -
The circuit below uses two quad voltage comparators (LM339) to illuminate a series of 8 LEDs indicating volume level. Each of the 8 comparators is biased at increasing voltages set by the voltage divider so that the lower right LED comes on first when the....
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.....
Popular Circuits
Most of us don`t have the luxury of building a 1/4, 1/2 or even a 5/8 wavelength vertical antenna...
In those cases we want to measure the temperature in an area far from where it is. The imaging...
The ROMs or PROMs must have the correct code for converting the data from the NE5037 -used as...
Input terminal VIN is connected to the +V line of tbe circuit that the indicator is to monitor,...
The circuit given here is of a very useful and accurate digital voltmeter with LED display using...
Diodes with a low voltage drop, also have a high reverse current (leaking current), this will...
Many modern circuits tend to work from a single supply voltage of 3V. But often they need a...
This metal detectors described in the example can be used to detect metal objects with high...
As shown for the lights to remind the circuit. The circuit consists of monostable delay circuit,...
Figure 1-87 is a good loudness volume control circuit, it uses an ordinary potentiometer, used...