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  • SL134 Sensitive Temperature Control Lights Schematic

    2014-12-18 14:35:1079

    The thermostat is applicable within the range of -5 to 120 C, the circuit shown in the figure. AT is the the SL134 constant current source IC, it has t...

  • Light Chaser I

    2014-12-18 14:12:51103

    Up to 100 lights, LEDs, or optocoupler triac circuits can be sequentially activated by this circuit. One (Ul) 4017 decode co unter sequences 10 LEDs wh...

  • Workng of Organic LED (OLED)

    2014-12-18 14:00:0671

    OLED Have you ever thought of having a high-definition TV that is bigger than your usual LCD display, and that consumes only half the power of an ordin...

  • LED bar peak program meter display for audio

    2014-12-18 13:24:45224

    A bar column of LEDs is arranged so that as the audio signal level increases, more LEDs in the column light up. The LEDs are arranged vertically in 6 d...

  • Led display digital Voltmeter

    2014-12-18 13:06:11619

    front side Copyright of this circuit belongs to smart kit electronics. In this page we will use this circuit to discuss for improvements and we will in...

  • Car Headlights On Reminder

    2014-12-18 12:53:4283

    More important than environmental issue of energy saving, avoiding car battery failure when you leave the headlamp turned on overnight in the garage is...

  • Delayed ON LED

    2014-12-18 12:36:3484

    Description. Here is very simple circuit in which the LED becomes ON only after a preset time the power supply is switched ON. When the power supply is...

  • Flashing-LED Battery-Status Indicator Circuit

    2014-12-18 12:35:4178

    Signals when an on-circuit battery is exhausted, 5V to 12V operating voltage A Battery-status Indicator circuit can be useful, mainly to monitor portab...

  • Three-year-led-flasher

    2014-12-18 11:37:14116

    Inserting two 1-MO resistors, R1 and R2, in the output stage of one of the circuit`s inverters limits the current needed by the oscillator tone more th...

  • Lightning/Surge Protector Circuit Using Gas Discharge Tube (

    2014-12-18 11:10:13216

    Gas Discharge Tubes (GDT) Introduction GDT’s are special type of gas filled tubes used for wide range of electronic/electrical circuits for providing...

  • 3 LED battery monitor circuit

    2014-12-18 10:19:0793

    Description. This is the circuit diagram of a 3 LED bar graph type battery monitor circuit that is ideal for monitoring the voltage level of an automob...

  • How to build Two Flashing LEDs Circuit Schematic

    2014-12-18 09:08:2678

    Description Here is the circuit diagram of Two Flashing LED's for different applications (such as model construction), and recreational. Having adjusta...

  • Light beam operated on-off relay

    2014-12-18 08:02:5695

    When a beam of light strikes the photocell, the voltage across neon lamp NE-1 rises sharply. NE-1 turns on and fires the SCR. Kl is an impulse relay wh...

  • Voltage-Controlled Amplifier

    2014-12-18 07:01:28297

    The CA3080 can be used as a gain controlling device. The input signal is attenuated by R1/R2 so that a 20-mVpp signal is applied to the input terminals...

  • 40KHz MODULATED LIGHT DETECTOR

    2014-12-18 06:41:4477

    This circuit uses a unique cascode amplifier circuit to convert the current from a PIN photo diode to a current without any feedback network. It is ver...

  • How to build LED VU Meter

    2014-12-18 06:18:55113

    Description The circuit below uses two quad voltage comparators (LM339) to illuminate a series of 8 LEDs indicating volume level. Each of the 8 compara...

  • Two LED Flasher by Gate of IC 4011

    2014-12-18 06:15:03248

    IF you want the small circuit two LED Flasher, I show this circuit. The important part of the circuit is IC 4011 again, I used gate of IC 4011 (see ima...

  • Music Sound to light converter

    2014-12-18 05:58:10115

    This was made by me when i was a kid, it was even published in a magazine, i think it will work, it was used on a very old huge ornamental valve philip...

  • Mini Emergency Light circuit

    2014-12-18 05:03:44343

    This is an LDR based Emergency Lampthat turns on a High watt White LED when there is darkness in the room. It can be used as a simple emergency lamp in...

  • LED bicolor RG

    2014-12-18 04:53:4983

    Adaugat in Lumina | fara comentarii Mai multe scheme cu: leduri TLC272 Montajul controller LED bicolor RG functioneaza astfel: cand tensiunea de contro...

  • Multicolor HD LED

    2014-12-18 04:39:40107

    Most PC enclosures provide only a single LED to indicate hard disk access, with the LED being connected to the motherboard via a two-pin connector. How...

  • Capacitor Converters Lighting Circuit

    2014-12-18 04:19:2573

    The battery charging light is very easy to open, only a few seconds and then goes out again. When the finger across between the two metal strips about ...

  • 13 Color LED Rainbow(LM2940T-5.0)

    2014-12-18 04:18:26101

    This article briefly describes the 13 Color LED Rainbow (LM2940T-5.0). This principle is easy to understand, but also very practical. Depth understandi...

  • Constant Current LED Drive(MM5450 )

    2014-12-18 03:10:33150

    This article briefly describes the Constant Current LED Drive (MM5450). This principle is easy to understand, but also very practical. Depth understand...

  • Light From Flat Batteries(BC337)

    2014-12-18 02:59:36118

    This article describes Light From Flat Batteries (BC337). The principle is very simple, very practical. The circuit components can help you understand ...

  • Ultra Bright LED Flash using LF351

    2014-12-18 02:36:18201

    Circuit diagram is one of the flash circuit. This circuit is very simple that does not interfere. In addition to this series is designed to use a 12V s...

  • LED or Lamp Pulsar Circuit

    2014-12-18 02:07:1483

    Astonishing effect 4.5V supply This circuit operates a LED in pulsing mode, i.e. the LED goes from off state, lights up gradually, then dims gradually,...

  • Ice warning lights to warn automobile

    2014-12-18 02:01:0678

    Ice warning lights to warn the car will tell the driver if his light is on, indicating that the outside temperature is close to zero, he should open th...

  • Temperature controlled relay circuit

    2014-12-18 01:31:01233

    This temperature controlled relay circuit is a simple yet highly accurate thermal control circuit which can be used in applications where automatic tem...

  • Drive Multiple LEDs by Using Only One NiMH Cell

    2014-12-18 00:51:5494

    Figure 1 This simple circuit allows us to drive serially connected seven LED s by using a single NiMH (Nickel Metal Hydride) AA cell. As you can see th...

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