- Electronics Projects
- 1.5v to 220v AC simple inverter
- Build Simple AM Radio receiver at home
- Simple Uninterruptible Power Supply (UPS) Circuits
- Single Transistor Amplifier Circuit
- 3.7v Lithium Battery Level Indicator
- LED Chaser using transistors
- Electronics Projects for Beginners
- Simple Latch Circuit Using Transistors
- DC to AC Power Converter circuit feature working
- Fire Alarm Circuit using Transistor
- Two Transistor Amplifier
- Laser Security System
- Music Operating Dancing LEDs light
- Volts Booster Circuit Using Ferrite ore transformer
- Touch switch circuit using Transistor
- Two transistor FM transmitter project
- LED Flasher Using Timer IC 555
- DC Voltage Power Supply Using The LM317
- Electronic Mosquito Repellent Circuit
- Light Dimmer Circuit 1000 Watts Using BT139
- Non-Contact Voltage Detector by using transistor
- 4 volts simple inverter project: explanation
- Flashing Police Lights Circuit
- Light Dependent Resistor, its types and applications
- 100 watts inverter circuit working and applications
- Stereo Audio Amplifier 5W Circuit using TEA 2025 IC
- Small High Volts using 2Sc 1815 transistor
- Electronic Doorbell Circuit using a 555 and CD4017
- Touch On Touch Off Switch Circuit Using 555 timer
- LM386 Audio Amplifier Circuit
- IC 4440 Amplifier Circuit
- Neon Lamp Circuits Working and Application
- Low Power Audio Amplifier Using integrated circuit
- Voltage Regulator Circuits using Transistor and Zener Diode
- Water Level Indicator Circuit Using Transistor
- LED Chaser using CD4017 IC
- Motion Sensor Light Switch
- Melody Generator Using IC um66
- Water Level Indicator Using IC
- Led Light to 220v AC
- LiFi Data Transfer System, WiFi vs LiFi
- How to Connect a CAR Battery | Polarity Checker
- Voltage Level Indicator Circuit
- Security Alarm Using PIR Sensor
- Battery Level Indicator Using LM 3914
- Single Transistor FM Transmitter circuit
- Different types of Capacitor
- Light Emitting Diode (LED) Types of LEDs
- Different Types of Relays
- Piezo buzzer features equivalent
- Clap Switch : Circuit and Its Working
- Different Types of diode, working and features
- PC817 Optocoupler Pinout, Equivalent, Features and applications
How to Connect a CAR Battery | Polarity Checker
In this article, we will teach you how to connect a car battery. Polarity tester electronics circuit that will easily test the polarity of a DC source. The components needed and the connection diagram are given below. Is it easy to test the polarity of a circuit’s point whether it is positive or negative? In this way, you can avoid the problem of a wrong connection. The polarity checker circuit is very easy, just follow the diagram while making it.
Every DC source has two terminals
- Positive
- Negative
The conventional current always flows from a positive battery terminal to a negative battery terminal. The vice versa is the wrong connection. Therefore we must have to check the specific terminal because Only the correct connection according to polarity will ensure the correct functionality of the circuit. If the connections are wrong way then the circuit will not only function improperly but can also become cause of damaging the circuit. A wrong connection will burn the main components of a device such as power ic etc. So it is very important to ensure correct polarity during connection. This article explains a simple project with the help of this circuit you can check the polity of a battery very easily.
Video How to Connect a CAR Battery
How to build a Polarity Checker circuit
This circuit can be made in two ways: with Diode and LEDs and without Diodes. We make it with both methods. So, first of all, we make it without diodes.
Polarity circuit with Only LEDs and resistor
Components Required Polarity Checker circuit
- Green LED
- Red LED
- Buzzer 6v
- 1k Resistor
- Red and Black Nobs
Polarity circuit with Diodes and LEDs
In this polarity circuit, we have used a diode and 1 resistor
- Diodes 4
- LED diodes 2 (1 green and 1 RED)
- Resistor 1k
In this circuit diagram, 1k resistors are used while all diodes are IN4007 and two LEDs RED and green are used. As a Leads, you can use multi-meter leads.
You can use PCB or make it without PCB it depends on your desire anyhow PCB can increase the efficiency of a circuit. The video which I have uploaded on youtube represents this circuit with PCB.
After making this project please must comment about its accuracy and performance I will for your feeds backs.
