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Rangkaian Alarm Kebakaran

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Ditulis Oleh : YK69 Elektro
Judul : Rangkaian Alarm Kebakaran

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    Rangkaian Alarm Kebakaran

    Alarm Kebakaran

    This is a simple fire alarm circuit, which can help the user's color interested against fire accidents based on a LDR and lamp pairs an alarm for sensing the fire.The works by sensing the smoke Produced During fire.The circuit produces an audible alarm the fire breaks Pls out with smoke.

    Rangkaian Alarm KebakaranSkema Rangkaian Alarm Kebakaran

    When a number of smoke passes Between a bulb and an LDR, the amount of light falling on the LDR decreases. This Causes the resistance of the LDR to Increase and the voltage at the base of the transistor is pulled high due to Which the supply to the COB (chip-on-board) is completed. Different cobs are available in the market to generate Different Musical. The choice of the COB depends on the user. The signal generated by COB is amplified by an audio amplifier. In this circuit, the audio power amplifier is wired around TDA2002. The sensitivity of the circuit depends on the distance Between bulb and LDR as well as the setting of preset VR1. Thus by placing the bulb and the LDR at appropriate distances, one May Vary preset VR1 to get optimum sensitivity. An ON / OFF switch is suggested to turn the circuit on and off as Desirable.


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    Adaptor/ Regulator

    1. Rangkaian Regulator Variable Sederhana

    Alarm/ Buzzer

    1. Refrigerator Door Alarm Circuit Using LDR
    2. Water Activated Alarm Using IC 555 Circuit

    Audio

    1. 3VDC Stereo Headphone Amplifier by IC LM4910 - New!
    2. 9 Volt Portable Headphone Amplifier Circuit
    3. Audio Peak Level Indicator By Op-Amp
    4. Op-Amp 6-Line Audio Mixer Circuit
    5. Rangkaian 11-90 hz Subwoofer Filter Using TL072 Op-Amp
    6. Rangkaian Alat Bantu Pendengaran
    7. Rangkaian Audio Surround Decoder

    Battery Chargers

    1. Rangkaian Charger aki 6 Volt

    Box speaker

    1. Power Meter Schematic For Audio Amplifier
    2. Sound Level (Decibel) Meter Circuit
    3. Ukuran Box Subwoofer 10" - New!

    Control/ Pengendali

    1. 9 Second Countdown Power-On Relay With 7 segment Display
    2. DC Motor Controller Circuit Using 741 Op-Amp
    3. Darlington Pair to Drive DC motor Circuit
    4. Simple Switch On Time Delay Circuit
    5. Stepper Motor Controller using IC 4027 - New!

    Effect Guitar

    1. UM3561 - Simple Sound Effects Generator Circuit

    Inverter/Ups

    1. 100Watt Inverter Circuit by IRF44 Mosfet
    2. 12VDC to 220VAC Inverter Circuit Using IC 555
    3. 12VDC – 220VAC Inverter Using Cmos CD4047
    4. 500 Watt Inverter 12VDC to 220VAC

    LED/ Lighting

    1. 10 LED VU Meter Using IC LM3914 - New!

    Microphones

    1. Rangkaian Alat Bantu Pendengaran

    Mikrokontroller

    1. AT89s51-52 and AVR USB Downloader - New!

    Op-Amp/ Penguat

    1. Audio Peak Level Indicator By Op-Amp

    Power Amplifier

    1. 25V Capacitor Bank for OCL Amplifier
    2. 30W Mini Mosfet Amplifier
    3. 35W Audio Amplifier Circuit by STK082
    4. 4,8W Class-A MOSFET Amplifier - New!
    5. BA5417 Stereo Power Amplifier Circuit - New!
    6. LM383 - Car Audio Amplifier Circuit - New!
    7. Power Meter Schematic For Audio Amplifier
    8. Rangkaian 400W MOSFET Amplifier
    9. Rangkaian Power Amplifier Blazer 1000 Watt - New!
    10. Sound Level (Decibel) Meter Circuit

    Radio/Intercom

    1. LM390 Simple 2-Way intercom Circuit
    2. Rangkaian 3V FM Transmitter

    Saklar/Relay

    1. 9 Second Countdown Power-On Relay With 7 segment Display
    2. Driver Relay Menggunkan Transistor
    3. Light/Dark Switch With Relay
    4. Simple Switch On Time Delay Circuit
    5. Simple switch-Off Time Delay Circuit

    Sensor/ Pendeteksi

    1. Car Parking Sensor circuit Using Infra-Red LED
    2. Rangkaian Pendeteksi Angin - New!
    3. Smoke Detector circuit Using LDR

    Tester Circuits

    1. High Voltage Meter or Probe Design
    2. Power Meter Schematic For Audio Amplifier
    3. Rangkaian Ampere Meter Digital
    4. Rangkaian Transistor Tester
    5. Sound Level (Decibel) Meter Circuit

    Timer/ Osilator

    1. 9 Second Countdown Power-On Relay With 7 segment Display
    2. Bistable Multivibrator Using IC 555 Circuit
    3. IC 555 Monostable Circuit
    4. Rangkaian 8038 frequency | Signal Generator
    5. Simple Switch On Time Delay Circuit
    6. Simple switch-Off Time Delay Circuit
    7. Triangle and Squarewave Generator Using Op-Amp

    Tone Control/ Equalizer

    1. 6 Band Graphic Equaliser Circuit Using 741 Op-Amp
    2. Op-Amp 6-Line Audio Mixer Circuit
    3. Rangkaian 11-90 hz Subwoofer Filter Using TL072 Op-Amp
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