Which transistor is used in mobile charger?
The circuit described here provides 4.7 regulated voltage and sufficient current for the slow charging of the mobile phone. Transistor T1 is used to give the regulated output. Any medium power NPN transistor like CL100, BD139, TIP122 can be used.
What are the components of a 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.
How does a phone charger work?
Wireless chargers work by creating a magnetic field that your phone, watch, or other device absorbs to gain energy. When you place a device on a wireless charging pad, a small coil in the device receives and harvests energy from the magnetic field, and uses it to power the battery.
Do mobile phone chargers have transformers?
Using the SMPS technology makes the chargers smaller and lighter by elimination of low frequency transformers. The one used here is a power transformer. It reduces the voltage level of the input power and gives a low voltage power that is exactly required to charge the battery.
Is it safe to charge your phone in the car?
The nature of charging your phone in your car poses a risk to your phone. Most people use the cigarette lighter, which generally provides 12V. “Smartphones typically use 5V when charging, which the adapter is normally able to safely regulate the voltage,” Joshua Sutton, uBreakiFix Training Department Manager, told Reader’s Digest.
What happens if you over charge your cell phone?
You can’t overcharge your phone’s battery, so don’t worry about that. Your phone stops drawing current from the charger once it reaches 100%, according to Cadex Electronics marketing communications…
Why does it matter which Charger you use for your phone?
The most common spec you’ll see on a charger is the watts (W)—essentially how much energy the charger can push toward your phone at once. Tablets and laptops will typically have chargers with a higher W value, as they have bigger batteries to fill (don’t be surprised if your phone charger won’t work with your laptop).
What should be the voltage of a cell phone charger?
“Smartphones typically use 5V when charging, which the adapter is normally able to safely regulate the voltage,” Joshua Sutton, uBreakiFix Training Department Manager, told Reader’s Digest. “However, if the adapter is malfunctioning or is not made by your phone’s manufacturer, it can send too much power to your smartphone and potentially damage it.