Design And Construction Of A Geyser Timer

Electrical Electronics Engineering | Industrial Physics | Physics

The design and construction of a geyser timer involve creating a device that regulates the heating cycle of a geyser, enhancing energy efficiency and safety. This project integrates electronic components and programming to automate the activation and deactivation of the geyser based on preset schedules or user-defined settings, thereby optimizing energy consumption and reducing utility costs. The timer can be configured to operate during off-peak hours, maximizing cost savings, while also ensuring a consistent supply of hot water for household or commercial use. Key components include a microcontroller for processing commands, relays for controlling power flow to the geyser, and a user interface for programming and adjusting settings. By implementing this innovative solution, individuals and organizations can achieve greater control over their water heating systems, promoting sustainability and resource conservation in line with modern energy-efficient practices.

This geyser timer circuit sounds an alarm after the set timing of 22 minutes when the water is heated up and can be used. The circuit comprises a timer IC 555 wired as an astable multivibrator with adjustable time period of 15 seconds. The astable output after inversion by an inverter drives decade counters IC3 and IC4 (each IC 7490) connected in cascade. The decade counters output is connected to decoders IC5 and IC6 (each IC 7442), respectively. The decoder outputs (Q8 outputs of IC5 and IC6) are fed to inverters and the inverter outputs, in turn, are fed to an AND gate. The AND output is connected to the reset pin of the astable multivibrator built around another timer IC 555 to sound the alarm.

TABLE OF CONTENTS

COVER PAGE

TITLE PAGE

APPROVAL PAGE

DEDICATION

ACKNOWELDGEMENT

ABSTRACT

CHAPTER ONE

1.0 INTRODUCTION

1.1 BACKGROUND OF THE PROJECT

PURPOSE OF THE PROJECT
AIM OF THE PROJECT
OBJECTIVE OF THE PROJECT
PURPOSE OF THE PROJECT
LIMITATION OF THE PROJECT
ADVANTAGES OF THE PROJECT
PROBLEM OF THE PROJECT
APPLICATION OF THE PROJECT
RESEARCH QUESTION
PROJECT ORGANISATION

CHAPTER TWO

LITERATURE REVIEW

OVERVIEW OF THE STUDY
REVIEW OF THE RELATED STUDY

CHAPTER THREE

3.0 CONSTRUCTION METHODOLOGY

3.1 BASIC OF THE SYSTEM

3.2 BLOCK DIAGRAM OF THE SYSTEM

3.3 SYSTEM OPERATION

3.4 CIRCUIT DIAGRAM

3.5 CIRCUIT DESCRIPTION

3.6 DESCRIPTION OF COMPONENTS USED

3.7 POWER SUPPLY UNIT

CHAPTER FOUR

4.0 TESTING AND RESULTS

CONSTRUCTION PROCEDURE AND TESTING
INSTALLATION OF THE COMPLET DESIGN
ASSEMBLING OF SECTIONS
TESTING OF SYSTEM OPERATION
COST ANALYSIS

CHAPTER FIVE

CONCLUSION
RECOMMENDATION
REFERENCES

KEYWORD: geyser timer, geyser circuit diagram, timer circuits, electric geyser wiring diagram, how to use geyser, geyser connection diagram, 555 timer projects, timer circuit using 555, advanced 555 timer projects.

Geyser timer circuit

The circuit comprises a timer IC 555 wired as an astable multivibrator with adjustable time period of 15 seconds. The astable output after inversion by an inverter drives decade counters IC3 and IC4 (each IC 7490) connected in cascade. The decade counters output is connected to decoders IC5 and IC6 (each IC 7442), respectively. The decoder outputs (Q8 outputs of IC5 and IC6) are fed to inverters and the inverter outputs, in turn, are fed to an AND gate. The AND output is connected to the reset pin of the astable multivibrator built around another timer IC 555 to sound the alarm. Now you can turn off the geyser.

A green LED (LED1) has been used as the power supply indicator.

Switch on the timer and the geyser at the same time. When the alarm sounds, it means that the water in the geyser has heated up and can be used.

Geyser timer circuit

Construction & testing

You can assemble the timer circuit on a general-purpose PCB and install it near your bathroom so that both the timer circuit and the geyser can be switched on simultaneously.

After the siren sounds, if required, we can increase the time by another 22 minutes for geyser by resetting the circuit by pushing reset switches S1 and S2 momentarily.

If you want to change the preset time of the geyser, the same can be easily done by combining appropriate outputs of IC5 and IC6 using DIP switches (S3 and S4) while keeping in mind IC5 outputs (Q0 through Q9) are spaced 15 seconds apart and IC6 outputs are spaced 150 seconds (2.5 minutes) apart.

Caution

Please note that the timer circuit has no connection with the geyser circuit. The geyser works off 220V AC, while the timer works off 5V DC.