LED Circuits
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The number of the pulses of the input can be confirmed by seeing it with the eyes by putting the light-emitting diode to the output of the counter .... -
This is a low cost circuit diagram for the emergency light based on white LED. Component: LM317 IC, Resistor, Transformer, LED, Variable .... -
This circuit suitable for a small office or home environment, it can also be adapted to use a combination lock or keypad to set and reset the .... -
This is a circuit of 6 Zone Alarm with LED Display . This alarm system has 6 independent zones, a 7 segment LED display, 1 timed entry/exit zone .... -
The following circuit shows about LED Knight Rider Circuit Diagram. This circuit based on the 4017 and 555 IC. Features: Knight Rider circuit, 4 .... -
This circuit shows about 1,5V LED Power Supply Circuit Diagram. Features: needed a step up transformer (40:60)easily provide. Component: IC, .... -
The following circuit shows about A Simple and Cheap Dark-Detecting LED Circuit. Features: Photoresistors are reliable, photocell or LDR, LED .... -
The following circuit shows about Flashing LED EGG Timer Circuit Diagram. This circuit using the 2N2646 transistors. Features: MPF112 FET .... -
The following circuit shows about Schematic Diagram Of LED Sequencer. This circuit based on the 555Timer IC. Features: 555 timer circuit to debounce a mechanical switch, 555 timer circuit to produce clock pulses, pulldown resistor, 4017 decade.... -
Description: 7Segment Common LED UV Exposure Box Circuit Diagram. Features: used Stan Ocker`s circuit, uses a PIC16F84 to count and display the time .... -
The Allegro ® A8732 is a Xenon photoflash charger IC designed to meet the needs of ultra low power, small form factor cameras, particularly camera phones. By using primary-side voltage sensing, the need for a secondary-side resistive voltage divider is.... -
The BQ2000 is a programmable, monolithic IC for fast-charge management of nickel cadmium (NiCd), nickel metal-hydride (NiMH), or lithium-ion (Li-Ion) batteries in single- or multi-chemistry applications. The BQ2000 detects the battery chemistry and proceeds.... -
Conventionally a MOSFET with a voltage rating of 1500V or with a Half-Bridge connection using two MOSFETs of 800-900V, would be used for SMPS applications requiring input voltages higher than 380Vac. However, these methods have the disadvantages of a.... -
Application High Power LED Driver SP7652 with Analog 0V-to-10Vdimmer Electrical Requirements: Input Voltage 5. 5V to 28V Output Voltage VF of LED Output Current 0 to 6A Circuit This circuit has been designed to provide a high output constant current source.... -
This application note describes the development and use of a Digital Weigh-Scale (DWS) using Zilog`s Z8 Encore! ® Microcontroller This reference design offers a ready-to-use DWS solution easily scalable to measure high-capacity loads. A high-resolution.... -
The LM4550 is an Audio CODEC for PC systems which is fully PC99 compliant and performs the Analog intensive functions of the AC97 Rev2. 1 architecture. Using 18-bit Sigma-Delta A/Ds and D/As, the LM4550 provides 90 dB of Dynamic Range. The LM4550 was.... -
BFP640 used for 1575 MHz Global Positioning Satellite (GPS) Applications BFP640 is investigated for use as an LNA for 1575 MHz GPs Design Goals: Gain = 16 dB min, Noise Figure -14. 8 dBm min Printed Circuit Board used is Infineon Part.. -
The M-88L70 is a full DTMF Receiver that integrates both bandsplit Filter and decoder functions into a single 18-pin DIP or SOIC package. Manufactured using CMOS process technology, the M-88L70 offers low power consumption (18 mW max), precise data handling.... -
SP6331 SP6333 SP6335 Quad ower Supervisory Circuits are a family of Microprocessor reset Supervisory Circuits with multiple reset voltages. The 3 device family provides low voltage monitoring ability for up to four supplies with two precision factory-set.... -
Loop stability analysis usually starts from an open-loop Bode plot of the plant under study, e. g. the power stage of a buck or a flyback converter. From this diagram, the designer CAN extract phase and gain data within the frequency range of interest. His.... -
The analog to digital sketches have been covered a million ways from Sunday with every conceivable part but in order for us to move on to more complex circuits and concepts I need to be sure you know these simpler ones. This tutorial wont be quite as in.... -
This simple counter can be used to count pulses, as the basis for a customer counter (like you see at the doors of some stores), or for anything else that may be counted. The circuit accepts any TTL compatible logic signal, and can be expanded easily (see.... -
This is a spectacular but completely useless project. It lights Ultra-Bright LEDs in a sequence and each LED flashes brightly very briefly. The LEDs light-up going around and around since they are mounted in a circle (on a CD), then they pause before chasing.... -
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This is a programmable clock timer circuit that uses individual LEDs to indicate hours and minutes. 12 LEDs can be arranged in a circle to represent the 12 hours of a clock face and an additional 12 LEDs can be arranged in an outer circle to indicate 5.... -
This circuit is used J-FET for recieve signal to buffer from LED, About Output voltage, We used IC 1458 or LM1458, while in the dark is about 7 volts and the drop about 2 volts in full sun. The LED voltage buffered by a junction FET transistor and then....
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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