Homemade Circuit Projects

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In this post we will discuss how to convert any ordinary square wave H-bridge inverter into an almost pure sine wave inverter circuit. Basic Concept The idea is simple, just […] The post Convert any H-Bridge Inverter to Sine Wave H-bridge Inverter appeared first on Homemade Circuit Projects.
Convert any H-Bridge Inverter to Sine Wave H-bridge Inverter
In this post we will discuss how to convert any ordinary square wave H-bridge inverter into an almost pure sine wave inverter circuit. Basic Concept The idea is simple, just […] The post Convert any H-Bridge Inverter to Sine Wave H-bridge Inverter appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the current voltages and how to use it for this project
Pump Motor Timer Circuit with Dry Run Protection
In this post we learn about a circuit which can be used to monitor and detect the presence of municipal water supply by operating a pump motor through an intermittent […] The post Pump Motor Timer Circuit with Dry Run Protection appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the current voltages, and other things in which they are connected
Automatic Door Controller Circuit using a Single Push-Button
Automatic Door Controller Circuit using a Single Push-Button The post Automatic Door Controller Circuit using a Single Push-Button appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the output and voltages for two different types of devices
IC LM358 Datasheet and Specifications
In this post you will find the complete datasheet, pinout specifications of the IC LM358. This datasheet is written in simple language so that even the new hobbyists are able […] The post IC LM358 Datasheet and Specifications appeared first on Homemade Circuit Projects.
an electronic device is shown with measurements for the base and back of it, as well as
Unijunction Transistor (UJT) 2N2646 Datasheet
The 2N2646 is a type of Unijunction Transistor (UJT) commonly used in various electronic circuits. Here's a breakdown of its specifications: Pin Configuration: General Characteristics: Electrical Specifications: Advantages and Disadvantages […] The post Unijunction Transistor (UJT) 2N2646 Datasheet appeared first on Homemade Circuit Projects.
an electronic circuit diagram with the following instructions
Adjustable Voltage Regulator Circuit using LM324 IC with Over Current Protection
The post explains how a single LM324 IC can be used to create an adjustable voltage regulator circuit with overload and over current protections. Basic Working A basic IC LM324 […] The post Adjustable Voltage Regulator Circuit using LM324 IC with Over Current Protection appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the power supply and voltages for this device, which is connected
LM35 IC Temperature Controller Circuit with Push Button
In this post we discuss a simple yet very accurate temperature controller circuit using IC LM35, featuring an automatic cut off with a push button latch. LM35 is a precision […] The post LM35 IC Temperature Controller Circuit with Push Button appeared first on Homemade Circuit Projects.
an electric circuit diagram showing how to wire it
Flashlight Circuit with Long Backup and High Efficiency
There are two main advantages of this highly efficient flashlight circuit with long backup. Firstly, it uses only a single 1.5V AAA cell and illuminates a 3.3V LED. Secondly, the […] The post Flashlight Circuit with Long Backup and High Efficiency appeared first on Homemade Circuit Projects.
an electronic device circuit diagram showing the current voltages and power source for this device
Car Battery Warmer Circuit
The main objective of this car battery warmer circuit is to make sure that even in extremely low temperatures, the battery can be charged and discharged satisfactory. The design idea […] The post Car Battery Warmer Circuit appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the current voltages, and how to use it in this project
Simple Motorcycle Security Alarm Circuit
This post explains a simple motorcycle ant-theft security alarm circuit using a tilt switch and a TTP223 touch switch. The circuit was requested by Mr. Sergei, as given below. Design […] The post Simple Motorcycle Security Alarm Circuit appeared first on Homemade Circuit Projects.
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an electronic circuit diagram with two lights
Day/Night Triggered Automatic Door Lock Circuit
The post explains a simple day, night triggered automatic door lock circuit, which can be used for autonomously unlocking a kennel door during day break, and locking it when night […] The post Day/Night Triggered Automatic Door Lock Circuit appeared first on Homemade Circuit Projects.
an electronic circuit with two lights and one light on the other side, is shown in this
Flashlight Activated Burglar Alarm Circuit
This flashlight triggered burglar alarm circuit will instantly switch ON an alarm as soon as it detects light from the burglar's torch or flashlight. Burglars and thieves normally set out […] The post Flashlight Activated Burglar Alarm Circuit appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the wiring and instructions for using it to make a home security alarm
Security Alarm Circuit using RCWL-0516 Microwave Radar Sensor
This security alarm circuit using RCWL-0516 microwave radar motion sensor will detect any moving thing in the restricted area and turn ON an alarm sound. The RCWL-0516 is basically an advanced […] The post Security Alarm Circuit using RCWL-0516 Microwave Radar Sensor appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the current voltages, and how to use it in this project
Insect Light Trap Circuit for Protecting Crops
This solar LED light trap circuit for insects can be used to attract insects at night and keep them engaged with the light source. This distraction created by the LED […] The post Insect Light Trap Circuit for Protecting Crops appeared first on Homemade Circuit Projects.
an electronic device is connected to the power source and wiring for this project, which shows how it works
Smart Street Lamp Circuit using Motion Sensor
This simple yet highly sophisticated smart LED street light circuit automatically switches ON a street lamp from low brightness to high brightness whenever it detects a moving object underneath it. […] The post Smart Street Lamp Circuit using Motion Sensor appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the components
Mains AC Home Protector Circuit
This simple mains 220 V, 110 V AC voltage home protector circuit will protect all the mains operated appliances of your home from high and low voltage situations and also […] The post Mains AC Home Protector Circuit appeared first on Homemade Circuit Projects.
an electronic device circuit diagram showing the current voltages and power source, as shown in this
LED Light Wave Effect Generator Circuit
The post explains a simple LED light wave effect generator circuit which will sequentially create a difference in brightness over a chain of LEDs, creating a chasing light wave kind of visual effect. The post LED Light Wave Effect Generator Circuit appeared first on Homemade Circuit Projects.
an electronic circuit board showing the components
How to Connect and Use RCWL-0516 Microwave Motion Sensor
In this article we will comprehensively learn about the RCWL-0516 a microwave proximity motion sensor which uses Doppler radar. Here, we will discuss the following points: It is yet another […] The post How to Connect and Use RCWL-0516 Microwave Motion Sensor appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the current voltages, and how to use it in this project
Transcranial Random Noise Stimulation (tRNS) Circuit
The post discusses a basic Transcranial random noise stimulation (tRNS) circuit diagram which can be implemented externally for stimulating brain cells, resulting in an enhanced performance of the brain. The […] The post Transcranial Random Noise Stimulation (tRNS) Circuit appeared first on Homemade Circuit Projects.
the remote control switch is attached to an electronic device
Automatic Night Activated Wireless Light Circuit for Paintings
The article describes a basic wireless LED light circuit that may be used to autonomously turn on LED lights to illuminate artworks at nighttime. The post Automatic Night Activated Wireless Light Circuit for Paintings appeared first on Homemade Circuit Projects.
an image of some gold and silver items on top of each other with the words china science
Use this Battery for 50 Years without Charging
A novel battery technology, developed by Beijing-based firm Betavolt, has been introduced. It boasts an astounding 50-year lifespan without the need for maintenance or charging. With 63 radioactive isotopes contained […] The post Use this Battery for 50 Years without Charging appeared first on Homemade Circuit Projects.
an electronic circuit diagram with the following components and instructions to use it in this project
High Efficiency Li-Ion LED Driver Circuits Explained
The post explains a high efficiency 1.5 V to 4.2 V LED driver circuits which can be used with a standard Li-Ion battery for enhanced illumination, extended battery backup and […] The post High Efficiency Li-Ion LED Driver Circuits Explained appeared first on Homemade Circuit Projects.
A very simple darkness activated or night activated PIR lamp circuit project has been explained in the following article. Further in the article we also learn how to upgrade this […] The post Darkness Activated PIR Lamp Circuit appeared first on Homemade Circuit Projects. 12v Led, Ldr Sensor
Darkness Activated PIR Lamp Circuit
A very simple darkness activated or night activated PIR lamp circuit project has been explained in the following article. Further in the article we also learn how to upgrade this […] The post Darkness Activated PIR Lamp Circuit appeared first on Homemade Circuit Projects.
an electronic circuit diagram with batteries
Check What’s Behind the Paint of a Used Car
Some methods to hide a used car's external deterioration include filling up rust holes, removing collision dents with putty, fiberglass, or epoxy, and painting the car. The outside condition of […] The post Check What’s Behind the Paint of a Used Car appeared first on Homemade Circuit Projects.
an electronic circuit diagram with two lights
Audio Clipper and Compressor Circuits Explained
The article explains explains using circuit diagrams how a clipper and a compressor circuits work to processes an input audio signal as per the required output signal. What is an […] The post Audio Clipper and Compressor Circuits Explained appeared first on Homemade Circuit Projects.
an electronic circuit diagram with two lights
Wideband Amplifier Circuits
This page discusses many types of wideband amplifier circuits. These amplifiers are utilized in a variety of high frequency applications in electronics. We'll talk about how they operate and what […] The post Wideband Amplifier Circuits appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the current voltages and other things in order to control it
How to Measure Very Low Current [Circuit Diagram]
Accurately measuring very low currents of a few microamps or less using a regular panel meter or multimeter is not feasible. To make such precise measurements, you need to employ […] The post How to Measure Very Low Current [Circuit Diagram] appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the current voltages and power source for this device, which is
Breath Detector Circuit
The breath detector circuit explained below can be used to check or monitor the breathing function of a human or patient. Let's understand the detailed working of the circuit from […] The post Breath Detector Circuit appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the current voltages and power source for this device, it is
Ding Dong Bell Circuit that Saves Electricity
This circuit goes beyond being a simple two-tone doorbell. Instead, it utilizes envelope modulation to produce an authentic 'ding-dong' chime sound. Additionally, it incorporates a power-saving feature, consuming zero power […] The post Ding Dong Bell Circuit that Saves Electricity appeared first on Homemade Circuit Projects.
an electronic circuit diagram with the following instructions
Sleeping Aid Circuit
The sleep aid circuit appears to be particularly effective when used with young children experiencing restless nights. This can, in turn, contribute to the entire household enjoying uninterrupted sleep. With […] The post Sleeping Aid Circuit appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the current voltages and power source for a fanless light
Simple Ceiling Fan Regulator Circuit
A simple electronic ceiling fan regulator circuit using a triac and a diac is a common type of circuit used to control the speed of a ceiling fan. This circuit […] The post Simple Ceiling Fan Regulator Circuit appeared first on Homemade Circuit Projects.
the circuit diagram shows an inductive load with a trac at the current source
Understanding Triac Snubber Network Calculations
You may find electronic circuits that frequently utilize triacs to manage mains powered loads. However, these setups commonly feature an inconspicuous capacitor and resistor combination across the triac – a […] The post Understanding Triac Snubber Network Calculations appeared first on Homemade Circuit Projects.
the circuit diagram for an electrical device
GSR Meter Circuit for Biofeedback Measurements
In this post we learn how to build a very simple GSR meter circuit using just a couple of transistors and a few other passive components. A GSR (Galvanic Skin […] The post GSR Meter Circuit for Biofeedback Measurements appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the current voltages, and how to wire them up
High Voltage Constant Current Source Circuit
The presented circuit offers an adjustable constant current source capable of reaching up to 60mA, operating at voltages as high as 350V. Circuit Description The input stage, consisting of resistor […] The post High Voltage Constant Current Source Circuit appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the current voltages, and other electrical components on this page
100V Regulated Power Supply Circuit with Over Current and Short Circuit Protection
A trustworthy and adaptable power source is essential in the world of electronic circuits. The design we present here not only offers a regulated output voltage range of 50V to […] The post 100V Regulated Power Supply Circuit with Over Current and Short Circuit Protection appeared first on Homemade Circuit Projects.
an electronic device circuit diagram showing the components
Audio Amplifier Circuit using IC L165
The discussed audio amplifier circuits are designed around the versatile L165V amplifier IC, which is quite adaptable in various scenarios. Working Voltage Range While the minimum recommended supply voltage is […] The post Audio Amplifier Circuit using IC L165 appeared first on Homemade Circuit Projects.
an electronic circuit diagram with the following instructions
Simple Temperature Alarm Circuit
This simple temperature alarm circuit generates an alarm sound whenever temperature detected by the sensor exceeds a set threshold. The alarm's reliability and potential modifications are also discussed below. The […] The post Simple Temperature Alarm Circuit appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the current voltages for each device and how to use it
Constant Current Generator Circuits Explained
Constant current generators (CCGs), as the name suggests, are circuits designed to produce a steady load current regardless of significant fluctuations in load resistance or voltage levels. Basic Constant Current […] The post Constant Current Generator Circuits Explained appeared first on Homemade Circuit Projects.
the diagram shows an electrical device that is connected to a ground source, and where it is located
Footsteps Detector Circuit
By sensing vibrations from footfall, a Footsteps Detector Circuit is a creative and affordable approach for catching intruders. It employs a simple setup with a low-cost loudspeaker and a mute […] The post Footsteps Detector Circuit appeared first on Homemade Circuit Projects.
an instruction for how to use the pn led flasher and other electronic devices
Accurate Transistor Tester Circuits Explored
If you know a transistor's pinout, you can use this transistor tester to quickly determine if it is good or bad and whether it is PNP or NPN. Additionally, certain […] The post Accurate Transistor Tester Circuits Explored appeared first on Homemade Circuit Projects.
an electronic circuit diagram with the following instructions
Battery Low Voltage Alarm Circuit
Despite its simplicity, the Battery Low Voltage Alarm circuit has a very important function. It forewarns you of approaching battery failure so that you may run to the store and […] The post Battery Low Voltage Alarm Circuit appeared first on Homemade Circuit Projects.
an electrical wiring diagram showing the various components
How to Connect LM338 IC in Parallel to Increase Output Current
The LM338 is an adjustable 3-terminal positive voltage regulator capable of providing up to 5 amperes of output current. To increase the output current capability, you can connect multiple LM338 […] The post How to Connect LM338 IC in Parallel to Increase Output Current appeared first on Homemade Circuit Projects.
an electronic device circuit diagram showing the components and instructions for making a radio receiver with two different
12 Amp Power Supply Circuit using Parallel LM317 ICs
This adjustable power supply is capable of delivering a maximum output of 12 A with an adjustable voltage from 4 V to 20 V through many LM317 ICs connected in […] The post 12 Amp Power Supply Circuit using Parallel LM317 ICs appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the components
LED Arrow Direction Indicator Circuit
The arrow-shaped LED direction indicator circuit utilizing the 74LS164 based IC and a configuration of 14 LEDs arranged in the shape of an arrow is a captivating and visually appealing […] The post LED Arrow Direction Indicator Circuit appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the current voltages and power source for this device,
Simple IC 4047 Inverter Circuit with PCB Design
From a continuous source, battery, or vehicle alternator, it is possible to produce a 50 Hz voltage/pseudo-sinusoidal waveform, using this simple IC 4047 inverter circuit. The design is capable of […] The post Simple IC 4047 Inverter Circuit with PCB Design appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the current voltages and power source for this device, it is
Car Reverse Horn Circuit
A crucial safety element in cars is the reverse horn, sometimes referred to as the reverse warning device or backup alarm, which emits an auditory signal while the automobile is […] The post Car Reverse Horn Circuit appeared first on Homemade Circuit Projects.
an electronic device circuit diagram showing the components
Piano, Guitar Sound Effect Generator Circuit
Music is a part of our lives, accompanying and enhancing our everyday experiences. While it is easy in electronics to generate a single note, for example, using a simple astable […] The post Piano, Guitar Sound Effect Generator Circuit appeared first on Homemade Circuit Projects.
an electronic device with many wires attached to the back of it and two different types of wires on top of each other
Mains 220 V AC Filter Circuit
The 220 V mains AC filter circuit described here has two functions: it prevents high-frequency waves from being sent back into the power network and it protects connected equipment from […] The post Mains 220 V AC Filter Circuit appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the components
Electronic Measuring Tape Circuit using Ultrasound
Everyone is familiar with the mechanical measuring tape made of wood to measure human height. We offer you an original electronic version that operates based on the use of ultrasound. […] The post Electronic Measuring Tape Circuit using Ultrasound appeared first on Homemade Circuit Projects.
an electronic circuit diagram with the light on
24 V to 12 V DC Converter Circuit [using Switching Regulator]
The DC to DC converter circuit described below can be used to convert a 24 V DC source into a 12 V DC output with high efficiency. Meaning, the circuit […] The post 24 V to 12 V DC Converter Circuit [using Switching Regulator] appeared first on Homemade Circuit Projects.
the diagram shows how to wire up an electrical device
Atmospheric Pressure Indicator Circuit [LED Barometer Circuit]
With temperature, if there is one characteristic physical quantity of the past or future weather, it is certainly atmospheric pressure. The variations of this quantity are particularly interesting for weather […] The post Atmospheric Pressure Indicator Circuit [LED Barometer Circuit] appeared first on Homemade Circuit Projects.
an upward graph shows that the slope is at least one point in the curve, and the
Analyzing Class B and Class AB Amplifier Models
Both the majority of class B or AB power amplifiers currently encountered in HI-Fi amplifiers are presented in the form of integrated circuits specifically designed for this purpose. It is […] The post Analyzing Class B and Class AB Amplifier Models appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the current voltages and power source for this device, it is
Convert any Existing AC Lamp into Timer Controlled Lamp
The proposed push button timer circuit module can be directly integrated with any existing switch contacts of a lamp and enable the lamp to be converted into a timer controlled […] The post Convert any Existing AC Lamp into Timer Controlled Lamp appeared first on Homemade Circuit Projects.
an electronic device circuit diagram showing the current voltages and power source for this device
3 Laser Beam Controlled Circuits Explored
A compact, battery-powered transmitter emits a LASER beam when the control push button is activated. The beam is frequency-coded to provide a minimum level of reliability in transmission. The receiver […] The post 3 Laser Beam Controlled Circuits Explored appeared first on Homemade Circuit Projects.
an electronic device circuit diagram with the following components and instructions to make it look like they are
100 Watt Amplifier Circuit using LM12 IC
The LM12 integrated circuit (IC)-based 100-watt amplifier circuit is a strong audio amplification solution created to produce high-quality sound in a small package. This amplifier delivers outstanding power output while […] The post 100 Watt Amplifier Circuit using LM12 IC appeared first on Homemade Circuit Projects.
the block diagram shows how to operate an in - line machine with multiple output modes
10 Watt Stereo Amplifier Circuit
With a simple design, this 10 watt stereo amplifier circuit offers good dynamics and excellent bass reproduction. Although its power output is modest, at 2x10W RMS, it allows for comfortable […] The post 10 Watt Stereo Amplifier Circuit appeared first on Homemade Circuit Projects.
an electronic device with many lights inside of it
Glittering LED Flower Circuit [Multicolored LED Light Effect]
The glittering LED flower circuit we are presenting here holds significant importance in our artistic city and offers no particular interest other than delighting your view with various multicolored and […] The post Glittering LED Flower Circuit [Multicolored LED Light Effect] appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the components
Solar Battery Charger using LM339 Comparator
This small LM339 based solar battery charger setup is designed to optimize the charging of your battery using any solar panel while protecting it from accidental overloads. Considering the extended […] The post Solar Battery Charger using LM339 Comparator appeared first on Homemade Circuit Projects.
an electronic circuit diagram showing the components
Control Lights, Fan, using TV Remote [Full Circuit Diagram]
In today's world, the idea of control is strongly connected to the ability to use remote devices. Home automation, known as domotics, allows us to switch ON/OFF various things such […] The post Control Lights, Fan, using TV Remote [Full Circuit Diagram] appeared first on Homemade Circuit Projects.
the table shows how many different languages are used to describe each language in this text
Video Transmitter Circuit
Mini black and white cameras are now available at a low cost. The proposed experimental setup allows wireless transmission of images from a CCD camera module. The entire system is […] The post Video Transmitter Circuit appeared first on Homemade Circuit Projects.