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Sirine Mobil Polisi Negara Inggris dengan IC 555 - (11,259 view(s))

Tuesday, July 26th, 2011
Sirine Mobil Polisi Negara Inggris dengan IC 555

Sirine Mobil Polisi Negara Inggris dengan IC 555

Rangkaian ini adalah Sirine Mobil Polisi Negara Inggris dengan IC 555, di sini kita menggunakan IC yang paling populer di dunia, yaitu IC Clock Generator 555.

IC 555 yang berada di sebelah kanan berfungsi sebagai pembangkit nada alarm, dan IC 555 yang berada di sebelah kiri berfungsi sebagai Multivibrator Astable 1 Hz.

Keluaran (output) pada IC 555 yang berada sebelah kiri adalah sebagai masukan untuk memodulasikan frekwensi terhadap IC 555 yang berada di sebelah kanan. Hal ini menyebabkan sinyal frekwensi yang dihasilkan bergantian antara 440Hz dan 550Hz dengan rasio putaran sebesar 1Hz.

Transistor 2N3055 berfungsi untuk membantu memperkuat sinyal ke speaker.

Sirine Mobil Polisi Negara Inggris dengan IC 555
Sumber : http://home.roadrunner.com/~randylinscott//feb21.htm

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555 IC Timer Configuration - (6,364 view(s))

Saturday, July 23rd, 2011
555 IC Timer Pin Configuration

555 IC Timer Pin Configuration

This is 555 IC Timer Pin Configuration, The function of IC555 to generate the clock signal or the signal box. How our creativity to assemble, the function IC 555 can be used for multiple functions such as digital clock for clock, decoration using LED lights, turn on the 7-segment with astable circuit, metronome in the music industry, a timer counter, or with more tweaking longer able to provide a PWM (pulse width modulation) which regulates the frequency of the high logic signal to set the desired duty cycle.

Of course, in making a circuit in order to function properly it would be helpful to understand the function of each pin of the IC 555.
555 IC Timer Pin Configuration

IC 555 pin functions are as follows:

  • Pin 1 (Ground). Is the reference point for all signal and voltage on circuit 555, both series intenal and external circuit.
  • Pin 2 (Trigger). To make the output high, this occurs when the trigger pin voltage level from High to <1 / 3 Vcc
  • Pin 3 (Output). Output has two conditions, High and Low
  • Pin 4 (Reset). When low, pin 4 will be reset. At reset, the output will be low. In order to work, pin 4 must be High.
  • Pin 5 (Control Voltage). If the rated voltage, then the threshold voltage level will change from 2 / 3 Vcc to V5. Trigger voltage level will change from 2 / 3 Vcc to V5
  • Pin 6 (Threshold). To make the output Low, occurred at Low voltage from pin 6 to> 1 / 3 Vcc
  • Pin 7 (Discharge). Low output, pin 7 will be low impedance. High output, pin 8 will be high impedance.
  • Pin 8 (Vcc). This pin for receiving a DC supply voltage provided. Will usually work if given voltage 5-12V (maximum 18 V).

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Clock Function Generator NE555 – Part 3 - (2,925 view(s))

Friday, July 22nd, 2011
Clock Function Generator NE555

Clock Function Generator NE555 – Part 3

This is Clock Function Generator NE555 – Part 3 suite, NE555 monolithic timing circuit is a regulator that is capable of generating stable time delay or shocks that carefully. There are additional terminals to ignition or reset.

Clock Function Generator NE555

In the operating range of time delay, to operate as an oscillator is not stable, when driven carefully with 2 resistors and condensers extern. The circuit will be lit and reset on falling waveforms, and the composition of output will be a source or sink to 200mA or can drive TTL circuits.

Absolute maximum rates:

  • Applied voltage: 16 V
  • Waste of Power: 600mW
  • Browse operating temperature: 00C to +700 C
  • Browse store temperature:-650C to +1500 C
  • Lead Temperature: 3000C

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Clock Function Generator NE555 - Part 3

Profile

  • Name : ElectroSuite.com
  • Project : Illumination Intensity Measurement System Diagram using Computer
  • Major : Computer Engineering
  • Student ID : 970340561
  • Student Registered ID : 44377005970025
  • College : STMIK Bani Saleh – Bekasi

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Illumination Intensity Measurement System Diagram – Part 1 - (3,462 view(s))

Friday, July 22nd, 2011
Illumination Intensity Measurement System Diagram

Illumination Intensity Measurement System Diagram – Part 1

This is Illumination Intensity Measurement System Diagram – Part 1. The data in the microprocessor is always in digital form. This is different from the reality of the outside world, commonly known form of analog data.

To convert analog signals into digital signals, it requires analog to digital conversion, and IC ADC0809 is a main component. This tool will do the conversion analog voltage or current conversion into a digital word.

Digital word generated by the ADC (Analog to Digital Converter) delivered by the printer port that is then connected to the microcomputer bus. Port may be included in the ADC chip itself. For the program, ADC and appear as a printer port or a memory location that contains a binary display of analog signals.

There are a few other supporting components that must have been very helpful in the process of converting from Analog to Digital, namely: Sensor (at the Final of my project is LDR, Clock Function Generator NE555, Buffer CD74HCT244E, DB25 Female Printer Port).

Diagram

Illumination Intensity Measurement System Diagram

Profile

  • Name : ElectroSuite.com
  • Project : Illumination Intensity Measurement System Diagram using Computer
  • Major : Computer Engineering
  • Student ID : 970340561
  • Student Registered ID : 44377005970025
  • College : STMIK Bani Saleh – Bekasi

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Overheat Detector Alarm Switch using Temperature Sensor IC LM35 - (1 view(s))

Friday, July 8th, 2011

Overheat Detector Alarm Switch using Temperature Sensor IC LM35

This is Overheat Detector Alarm Switch using Temperature Sensor IC LM35 Electronic Suite Diagram, at the heart of this overhead detector (fire alarm) circuit is a precision integrated temperature sensor type LM35 (IC1), which provides an accurately linear and directly proportional output in mV, over the zero to +155 degrees C temperature range. This can be used as part of fire smoke detectors but do not use it as a home fire alarm system.
The LM35 develops an output voltage of 10 mV/K change in measured temperature.
Designed to draw a minimal current of its own, the LM35 has very low self heating in still air.

Here the output of the LM35 is applied to the non-inverting input of a comparator wired around a CA3130 opamp (IC2). A voltage divider network R3-P1 sets the threshold voltage, at the inverting input of the opamp. The threshold voltage determines the adjustable temperature trip level at which the circuit is activated.

When the measured temperature exceeds the user-defined level, the comparator pulls its output High to approx. 2.2 V causing transistor T1 to be forward biased instantly. T2 is also switched on, supplying the oscillator circuit around IC3 with sufficient voltage to start working. The 555 set up in astable mode directly drives active piezoelectric buzzer Bz1 to raise a loud alert. Components R7, R8 and C4 determine the on/off rhythm of the sounder.

A transistor based relay driver may be driven off the emitter of T1 (TP1). Similarly, replacing the piezo sounder with a suitable relay allows switching of high-power flashers, sirens or horns working on the AC mains supply.

Overheat Detector Alarm Switch using Temperature Sensor IC LM35

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