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  • X’Mas LED Decoration circuit

    2014-12-19 01:11:10139

    Using this simple circuit, you can make an 18 LED flasher to decorate the XMas Tree. The White, Blue and Red LEDs flash at different rates to give a co...

  • Two LED flashing alternate Display using LM324

    2014-12-19 00:41:34816

    This be LED display circuit , that interesting. By it will wink to alternate between LED the red and LED the green. This circuit can work with IC LM324...

  • Extended car courtesy light

    2014-12-19 00:20:1976

    In the car batterys negative terminal is connected to the chassis, the negative wire of the element (Q2 emitter) is connected to the chassis of the swi...

  • 6 Channel Auto Reverse Sequential Disco Running Lights

    2014-12-18 23:48:5092

    From 230 V AC a DC supply of 5 V is obtained. The power supply is given to the other blocks. The pulse generator at a particular frequency generates th...

  • ZL2PD LED Frequency Counter Based on 74HC4040

    2014-12-18 23:20:52438

    A 5-digit microprocessor-based frequency counter whichoperates to over 35 MHz. Expansion of this basic design to cover higher frequencies is easy.Intro...

  • Safety Light for Bicycle Rear Portion

    2014-12-18 23:07:2172

    Figure 1 The objective of the circuit is to produce a visible light that is clear enough to be seen with the use of 13 flashing LED s while being power...

  • Two Flashing LEDs Circuit Schematic

    2014-12-18 22:39:09100

    9 volt battery-operated device, Suitable for pins or badges Here is the circuit diagram of Two Flashing LED's for different applications (such as model...

  • Programmable LED Flashers (1N4148)

    2014-12-18 22:13:33104

    This article describes the Programmable LED Flashers (1N4148). The content is very simple, very helpful. Components in this article can help you unders...

  • Automatic parking light switch circuit

    2014-12-18 22:08:57115

    This automatic park light switch with LDR automatically turn ON the light when the surrounding light dims to a preset level. The first circuit diagram ...

  • Computer-Controlled 4-20mA Current Loop

    2014-12-18 22:01:5566

    In some industries, to control the some equipments they are use computer-controlled 4-20mA current loop. This current loop is used transmit a signal ov...

  • Automatic light dimmer circuit

    2014-12-18 21:43:32102

    This is an automatic light dimmer circuit. You do not need to dim the lights by yourself. It is so very convenient, because we use the LDR to detect ex...

  • 4-channel data telemetry system schematic detailed descripti

    2014-12-18 21:11:21742

    This article is a 4-channel data telemetry system theory in detail. Figure combining text to understand this principle is a very good choice. The 4-cha...

  • Low cost / Automatic Emergency Light

    2014-12-18 20:54:49111

    Description Here is a white-LED-based emergency light that offers the following advantages: 1. It is highly bright due to the use of white LEDs. 2. The...

  • LED brightness control

    2014-12-18 20:43:1298

    Its easy to alter the brightness of an LED simply by varying the current through it. Or you can keep the current constant at a fairly high value and va...

  • Voltage Controlled Current Source with Ground Referred Input

    2014-12-18 20:20:3785

    View Full Size Image View Original Datasheet A flying capacitor device such as the LTC1043 can produce a precision voltage differential over a wide com...

  • Current Loop Light Level Detector

    2014-12-18 20:19:0069

    This circuit is two wire light level detector, we dont separate wires for power this sensor system and for delivering the output signal. With current l...

  • LED Indicator for remote AC loads

    2014-12-18 19:41:48174

    The LED Indicator for remote AC loads Circuit. At very cheap and use electronic part the a little. This circuit uses diode rectifier cheapness , Resist...

  • LED Flashlight Driver Circuit

    2014-12-18 19:29:57203

    Appearing on the market a cheap LED flashlight, the flashlight front-end for five to eight high-brightness light-emitting tube, the use of two batterie...

  • AT89C2051 Night light saver (AT89C2051)

    2014-12-18 19:23:0794

    This article introduces the AT89C2051 Night light saver (AT89C2051). The principle is very simple, very practical. The circuit components can help you ...

  • LED Flasher with LM3909 circuit diagram

    2014-12-18 19:01:29112

    Very easy and simple LED flasher with only three components: a flasher IC, a LED and aelectrolytic capacitor. Component list: LED1_________Red LEDC1___...

  • Ir-Controlled Soldering Station

    2014-12-18 17:58:41314

    An IR-sensitive phototransistor is used to sense soldering-iron temperature. The phototransistor must see t he tip through an opaque tube to avoid stra...

  • Discrete High Current Switch Mode LED Driver

    2014-12-18 17:44:2986

    This is a discrete high current switch mode LED driver circuit. The basics of this circuit is a buck-converter principle. The efficiency of this circui...

  • The Unbelievable Electronic Temperature-Controlled Relay

    2014-12-18 17:32:2473

    Most of us are quite familiar with the electronic temperature-controlled relay. However, are you always bought the temperature-controlled relay from th...

  • Phone light

    2014-12-18 17:21:5576

    When the phone does ring the triac is triggered into conduction by a signal applied to its gate (G) through a bilateral switch (diac), D2. The triac ac...

  • Wide Input-Voltage Range High-Power LED Driver

    2014-12-18 16:46:4183

    This is a wide input-voltage range high-power LED driver circuit. This circuit based on a buck/boost converter controller regulates current to a white ...

  • Constant current source ful LEDS using LM3414

    2014-12-18 16:44:1291

    Led driver circuits A very simple high efficiency LED driver circuit project can be designed using the LM3414 and LM3414HV which are 1A 60W* common ano...

  • Courtesy Light (BZX79C10)

    2014-12-18 15:48:2373

    This article describes the Courtesy Light (BZX79C10). The content is very simple, very helpful. Components in this article can help you understand bett...

  • How to build LED 12 Volt Lead Acid Battery Meter

    2014-12-18 15:17:1679

    Description In the circuit below, a quad voltage comparator (LM339) is used as a simple bar graph meter to indicate the charge condition of a 12 volt, ...

  • VU meter 10 LED using LM3914

    2014-12-18 14:54:53308

    VU meter circuit is an IC number LM3914. This is a circuit that is commonly used standards. Within the integrated circuit LM3914 is a voltage range adv...

  • A dual alternating flashing light circuit

    2014-12-18 14:42:2674

    Related posts: Flashing HeartFlashing Christmas LED displayDual Voltage Controlled Filter w/ModulatorDual Voltage Controlled Oscillator w/ModulatorFlas...

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