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  • Electronically Controlled Security Door Keyboard

    2014-12-15 23:17:0370

    Figure 1 The circuit was constructed to provide a simple electronic lock system based on a single integrated circuit and will require a code of seven d...

  • LM308IC FOr IC Controlled Emergency Light Circuit

    2014-12-15 22:50:2691

    Descriptipn: The following circuit shows about LM308IC FOr IC Controlled Emergency Light Circuit. Features:relay RL2 is in de-energized state, automati...

  • Five Zone Alarm with LED Display

    2014-12-15 22:42:4280

    Figure 1 The circuit was constructed to be appropriate with small office or home environment which consists of seven-segment LED to display which zone ...

  • Very cheap ac light dimmer (BAT43)

    2014-12-15 22:37:4478

    This article describes the Very cheap ac light dimmer (BAT43). The content is very simple, very helpful. Components in this article can help you unders...

  • Voltage-Controlled Current Sink

    2014-12-15 22:29:5096

    This circuit widens the linear frequency span of an HC4046 from one decade to nearly three decades. An LM35 8 is used as a constant-current sink to rep...

  • Light to Sound Wave Receiver using IC 741

    2014-12-15 22:22:28310

    This be Light Wave Receiver circuit , perform take sound signal from the light by modify from the light into pieces hear at a loudspeaker. By the circu...

  • LED driver design using TCA62735AFLG led driver IC

    2014-12-15 21:47:3170

    Led driver circuits The TCA62735AFLG is a charge pump type DC DC Converter specially designed for constant current driving of white LED. This IC can ou...

  • Led display digital Voltmeter (ILC7107CPL)

    2014-12-15 21:37:18673

    This article describes the Led display digital Voltmeter (ILC7107CPL). The principle is very simple, very practical. The circuit components can help yo...

  • Super bright LED night light

    2014-12-15 20:45:28203

    Description. Here is the circuit diagram of a super bright LED night lamp that can be operated from the mains supply. Bridge D1 is used to rectify the ...

  • LX-800 Lighting system (LX800)

    2014-12-15 20:21:1688

    This article describes the LX-800 Lighting system (LX800). The principle is very simple, very practical. The circuit components can help you understand...

  • Light Sensitive Staircase Switch with Triac

    2014-12-15 20:14:4484

    Operation of the third circuit is much similar except that it has photo sensitivity. The circuit is shown in Schematic When there is no sufficient ligh...

  • Interfacing LED and push button switch to 8051

    2014-12-15 20:10:10103

    This article is all about how to interface push button switches to an 8051 microcontroller. Push button switches are widely used in embedded system pro...

  • Light Flashing Car 12 Volt using LM3900

    2014-12-15 20:05:2188

    If you have evered to use Flasher Relay 12V systematic usual mechanical , for general automobile. Today we try to come to build Circuit Flasher Relay 1...

  • LTC3202 Drive White LED Circuit Diagram

    2014-12-15 19:14:4281

    LTC3202 - Linear TECHNOLOGY production does not require a gated oscillator, charge pump, The picture shows the LTC3202 charge pump lithium-ion battery-...

  • LED Answering Machine Beeper Circuit

    2014-12-15 18:59:0375

    When the light on the answering machine blinks, the resistance of photoresistor Rl charges, triggers the timer (Ul), and generates 0.2-s pulse that act...

  • 240v HV-AC HIGH POWER LED

    2014-12-15 18:52:00433

    This is a Led can connect to 220Vac to 240 Vac. This is solution for simple to application Led for Home. This Led is very simple to use and install. bu...

  • Design LED Lighting 350W Power Supply using CM6900 CM6807

    2014-12-15 18:39:0990

    If you want to design a complete, efficient, standby power, and constant voltageLED lighting power supplyyou may read the following article. Champion M...

  • LED Bar-Graph Level Gauge

    2014-12-15 17:52:4686

    The MAX931 series has capability to produce high output source which is useful for driving LEDs. The circuit below shows an example of simple four-stag...

  • 73 MHz Hallogene Lamp Radio-Controlled With 7805 IC

    2014-12-15 17:24:5269

    Function: to control the power state of a hallogene lamp by a remote control.? Component: Diode Bridge, Transformer, Capacitor, Resistor, Antenna, 7805...

  • 2.7V to 4.2V to -5V at 90mA and 4.6V at 100mA AMOLED Power S

    2014-12-15 17:22:03106

    View Full Size Image View Original Datasheet LT3582 are dual DC/DC converters with positive and negative outputs. The positive output voltage can be se...

  • LED Electronic roulette

    2014-12-15 17:21:3979

    Ul (a 4046 PLL containing a voltage controlled oscillator or VCO, two phase comparators, a source follower, and a Zener diode) is used to produce a low...

  • 3 Channel White-LED Driver (2N3904)

    2014-12-15 17:11:27111

    This article briefly describes 3 Channel White-LED Driver (2N3904). This principle is easy to understand, but also very practical. Depth understanding ...

  • Fading Leds Circuit Diagram

    2014-12-15 16:19:2286

    Two strips of LEDs fading in a complementary manner, 9V Battery-operated portable unit This circuit operates two LED strips in pulsing mode, i.e. one L...

  • High Volt LED Flasher

    2014-12-15 16:03:5390

    Here is aFlasher circuitthat directly derives power from AC to give brilliant flashes at the rate of one flash per second. It uses aDiacas the main ele...

  • 38 Highlighting Energy-saving LED Lamps Production Schematic

    2014-12-15 15:50:46993

    LED energy saving lamps are energy saving and with long lifetime, so they are popular by people! Here we introduce the LED energy-saving lamp productio...

  • Control 7 segment LED displays with AVR

    2014-12-15 15:06:57211

    LED displays are nothing more than sets of Light Emitting Diodes. The difference is that they have different shapes in order to display specific inform...

  • Dancing led circuit

    2014-12-15 14:52:40133

    This article is an introduction to dance led circuit diagram. Master the principle is very effective method is to combine text read schematics. In this...

  • Light turning bike using IC LM3909

    2014-12-15 14:24:1981

    Usual already a bicycle has will no Light turning. If want to turn a car may be born dangerous can go up. Because of a car that drive to follow come to...

  • Light Operated Relay circuit

    2014-12-15 14:07:09254

    ThisLight SensitiveCircuit can operate a Relay to switch on Lamps or any AC loads when it senses darkness. It is ideal to use as switch less Night lamp...

  • Pilot Light Flame Detector with Low-Battery Lockout using a

    2014-12-15 12:59:27163

    View Full Size Image View Original Application Note The LTC1541 combine a micropower amplifier, comparator and bandgap reference in an 8-pin package. T...

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