Tuesday, September 24, 2013
Mobile Travel Charger Circuit
Here is an ideal Mobile charger using 1.5 volt pen cells to charge mobile phone while traveling. It can replenish cell phone battery three or four times in places where AC power is not available. Most of the Mobile phone batteries are rated at 3.6 V/500 mA. A single pen torch cell can provide 1.5 volts and 1.5 Amps current. So if four pen cells are connected serially, it will form a battery pack with 6 volt and 1.5 Amps current. When power is applied to the circuit through S1, transistor Q1 conducts and Green LED lights.
Most of the Mobile phone batteries are rated at 3.6 V/500 mA. A single pen torch cell can provide 1.5 volts and 1.5 Amps current. So if four pen cells are connected serially, it will form a battery pack with 6 volt and 1.5 Amps current. When power is applied to the circuit through S1, transistor T1 conducts and Green LED lights. When T1 conducts T2 also conducts since its base becomes negative. Charging current flows from the collector of T1. To reduce the charging voltage to 4.7 volts, Zener diode ZD is used. Resistor R4,and R5 allows 20 mA charging current. If more current is required, reduce the value of R4 to 100 Ohms so that with in 20 to 30 minutes battery will become fully charged. Points A and B are used to connect the charger with the mobile phone. Use suitable pins for this and connect with correct polarity.
Circuit diagram :
Mobile Phone Travel Charger Circuit Diagram
Parts:
R1 = 1K
R2 = 470R
R3 = 4.7K
R4 = 270R
R5 = 27R
C1 = 100uF-25V
D1 = Green LED
D2 = 4.7V/1W Zener
B1 = 1.5Vx4 Cells
S1 = On/Off Switch
Q1 = BC548
Q2 = SK100
The circuit comes from here.
Wednesday, June 12, 2013
The Upcoming Iphone Car Kit A Good Travel Partner To Drive
The recent series against the iPhone and the iPod launched Six-vehicle equipment - aiPower CA601. Adjustable elastic support products, which support 90-degree rotation, to provide users with a variety of operation, standard USB output interface can not only charge for a variety of digital devices, car audio system can also realize the iPhone hands-free calls, the other , aiPower CA601 can also be iPhone and the iPods music through the FM transmitter to car stereo channels to play.
Many MP3 users to buy the car kit in order to enjoy music anytime, anywhere to bring the fun, aiPower CA601 taking into account the MP3 car kit, users can iPhone and iPod products within the audio file through the FM transmitter to car stereo playback channels This feature is not only practical, but also to restore the high-quality sound, giving the user unprecedented comfort.
And other commercial car kit is different, aiPower CA601 can adjust the angle of the stent, the fixed phone can support one end of the bracket rotated 90 degrees to meet the habits of different users, while for most users get used to the current iPhone Case issues, the Patriots designers have done in research and development CA601 sufficient time to consider the design of the stent, aiPower CA601 using a flexible design that allows the iPhone to any equipment, protective cover products easily into the holder, and ensure stable and firm.
I believe this aiPower CA601 will be your best travel companion.