What are the parts of mobile charger?
A battery charger consists of a rectifier circuit, power circuit, ripple monitoring, control circuit, regulator circuit, and fault detection circuit. This charger can also be used as a DC source for a control and protection circuit of a substation during normal operation, or to charge the battery in floating mode.
Which resistor is used in mobile charger?
Mobile phone charger circuit The transformer output is rectified by diodes D1 through D4 wired in bridge configuration and the positive DC supply is directly connected to the charger’s output contact, while the negative terminal is connected through current limiting resistor R2.
How does a phone charger convert AC to DC?
There are four components that make up a phone charging system: a transformer to step the mains down to a working output voltage, a rectifier to convert the AC to DC, and a voltage Regulator to keep the voltage constant. The output is 5V DC.
What is charger circuit?
A mobile battery charger circuit is a device that can automatically recharge a mobile phone’s battery when the power in it gets low. Nowadays mobile phones have become an integral part of everyone’s life and hence require frequent charging of battery owing to longer duration usage.
What are the four wires in a USB cable?
“If you were to open up a USB cable, you would notice 4 different USB wire colours: white and green, which carry data, and red and black, which are used for power. Red carries 5 volts and acts as the positive wire, while black is the negative wire, otherwise known as the ground wire.
Which diode is used in mobile charger?
Zener diode ZD2 regulates the charging voltage to around 5.6V. When a short-circuit occurs at the battery terminal, resistor R8 senses the over-current, allowing transistor T1 to conduct and light up LED1. Glowing of LED2 indicates the charging mode, while LED1 indicates shortcircuit or over-current status.
Do phone chargers use AC or DC?
The outlets in your house produce alternating current, but your phone charger needs DC.
Can DC devices run on AC?
If we connect an AC supply to the DC devices and equipment: The positive and negative voltage will destroy (this is not always the case) some of electronic components such as transistors and electrolytic capacitors. In case of higher AC voltage, they may burn with blast and catch fire.
Why do Chargers stop working?
There are a few basic reasons why your charger would stop working: The wall socket is off or damaged. A damaged charger. There is damage to the device power port.
How does a mobile charger circuit work?
As the size of the transformer and capacitance are inversely proportional to the frequency, at first the supply AC voltage converted to DC and again it converted to High-frequency AC signal. This process helps to reduce the size of the charger. This was the simple working principle of a Mobile Charger.
Do phone chargers have rectifiers?
This circuit mainly consists a step down Transformer, a Full wave bridge rectifier and a 5V voltage regulator IC (7805).