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  • Sequential Flasher Circuit

    2017-02-02 09:25:5863

    A 555 timer, IC1, drives a 4017 CMOS decade counter. Each of the 4017s first four outputs drives a CA3079 zero-voltage switch. Pin 9 of the CA3079 is u...

  • SLAVE_FLASH_TRIGGER

    2017-02-02 09:09:3761

    The SCR is wired across the trigger circuit of the flash gun. Normally, the SCR is off, so the flash gun is able to charge to its trigger voltage. Phot...

  • Flashing alarm circuit

    2017-02-02 09:06:1860

    When somebody touches the safety cabinet or other protected metallic objects, in order to obtain the toucher's photo, sensor circuit will input a pulse...

  • Automobile Steering Flasher (3)

    2017-02-02 09:01:3663

    When S is disconnected, V is disconnected. IC's pin 1 and pin 3 will output high level while the oscillator doesn't work. When S is connected, V is con...

  • 6_volt_flasher_using_an_LM3909_chip

    2017-02-02 08:46:0660

    6-volt flasher using an LM3909 chip. Flashing rate is about 1 hertz. Circuitry inside dashed lines is the LM3909 (courtesy National Semiconductor Corpo...

  • Single flashing light-emitting diode application circuit

    2017-02-02 08:13:0460

    The chart shows the single flashing LED application circuit. The working frequency of blinking light-emitting diodes is only a few hertz, it is easy to...

  • Portable 230V Lamp Flasher

    2017-02-02 07:57:1862

    This is a portable, 230V high-power incandescent electric lamp flasher circuit diagram. It is actually basically a double flasher (alternating blinker)...

  • Flash beat circuit

    2017-02-02 07:56:5561

    Normally, the potentiometer R2 adjusts the flash frequency of the neon relaxation oscillator to once per second, so there is no need to add the timer. ...

  • FIRE_SIREN_USES_FLASHER

    2017-02-02 07:56:4360

    Low-drain circuit operating from 1.5-V cell uses National LM3909 flasher IC to simulate fire-alarm siren. Pressing button produces rapidly rising wail,...

  • 555 light control automatic flashing road-sign light circuit

    2017-02-02 07:52:0460

    As the figure 17-44 shows, the circuit is composed of the transformer rectifier circuit, the light control switch and the 555 astable multivibrator.etc...

  • SCR flashing LED circuit diagram

    2017-02-02 07:18:1862

    Single-junction transistor oscillator Q1 produces a series of timing pulses to trigger the SCR, then the SCR drives the 276-041 red light-emitting diod...

  • Flashing Eyes

    2017-02-02 06:41:4164

    Two-LED-eyes follow the rhythm of music or speech, 3V Battery-operated device suitable for pins or badges This circuit was purposely designed as a funn...

  • FLASHING_BRAKE_LIGHT

    2017-02-02 06:38:3961

    When power is first applied, three things happen: the light-driving transistor (Q1) is switched on because of a low output from U2, pin 3; timer U1 beg...

  • Vehicle flashing lights controller 5

    2017-02-02 06:38:1660

    The motor vehicle flashing lights controller described in the example is composed of LED light-emitting diodes and control circuit.It can be installedi...

  • Flash_EPROM_programmer_plus_adjustable_LCD_supply

    2017-02-02 05:37:4261

    The MAX745 generates both positive and negative boosted outputs from a +5-V supply. This circuit is configured for small microprocessor systems, and co...

  • ALTERNATING_LED_FLASHER

    2017-02-02 05:18:5861

    The timing components are R1, R2, and Ct. C1 is a bypass capacitor used to reduce the effects of noise. At start-up, the voltage across Ct is less than...

  • PHOTOFLASH_SUPPLY

    2017-02-02 03:52:5160

    Flybcck or ringing choke oscillator is free-running when voltage on regulator capacitor C2 is less than zener voltage for reference diode D2, but conve...

  • SEQUENTIAL_AC_FLASHER

    2017-02-02 03:15:4360

    Uses simple ring counter in which triac gates form part of counter load. Incandescent lamps come on in sequence, with only one lamp normally on at a ti...

  • 555 three colors flash light circuit

    2017-02-02 02:59:1160

    As the figure 17-49 shows, the circuit is composed of the 556 and a dual core light tube. The 2Hz multivibrator is composed of the IC's left part (1/2 ...

  • Slave Flash Trigger

    2017-02-02 02:26:5061

    Using any camera in a dull or dark environment generally requires the use of supplementary light. This is a standard technique, and even where adequate...

  • How to build Beam-break Detector For Camera Shutter or Flash

    2017-02-02 02:18:5860

    Circuit diagram: Description This circuit is presented as an alternative to the IR beam break detector featured in the June 2009 issue (Silicon Chip). ...

  • TIME_DELAY_PHOTO_FLASH_TRIGGER

    2017-02-02 02:01:0260

    Q1 is a phototransistor that is normally illuminated by a beam of light. When the beam is intercoupled, pin 1 of U1A goes high, and forces pin4 U2B low...

  • 24V flasher circuit

    2017-02-02 01:33:5460

    Description. The circuit shown here works from 24V DC and can flash two 24V bulbs alternatively. The circuit is nothing but an astable multivibrator op...

  • Two star flasher circuit.

    2017-02-02 01:12:3062

    Description. A circuit that can be used to flash two Christmas stars alternatively is given here. The IC1 NE 555 is wired as an astable multivibrator h...

  • AUDIO_DRIVEN_XENON_TUBE_FLASH_CIRCUIT

    2017-02-02 01:06:5761

    This circuit uses a Xenon flashtube to create a very real lightning effect. It can be driven in one of two ways: by sound input or by straight repeated...

  • Mock Flasher LED circuit

    2017-02-02 00:54:4661

    This simple Mock Flasher LED simulates the indicator of a sophisticated Alarm system. It can be placed in doors, gates and vehicles to confuse intruder...

  • Dual flashing light string circuit (3 )

    2017-02-02 00:24:4761

    As shown in the figure, it is a dual flashing string lights controller which uses HFC9561B audio integrated circuit skillfully. HFC9561B ( produced by ...

  • The flash signpost light circuit

    2017-02-01 23:59:0860

    E.g 7 the flash signpost circuitSee as figure 20-7, the circuit consists of the transforming rectifier circuit, light control switch and non-steady mul...

  • TPS65552A Xenon Tube Flash Driver

    2017-02-01 23:43:4161

    The size of the photoflash charger circuit is greatly simplified and reduced by Texas Instrument (TI) TPS65552A. A photoflash capacitor charger based o...

  • Soft Start for Flashlights

    2017-02-01 22:42:2260

    Application:A project with only 2 parts, but is great for addressing an everyday situation that is irritating at best and dangerous at worst. This circ...

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