prompted me to design a DC double cellphone charger circuit that is able to facilitate charging of
many cell phones simultaneously, let's learn how to make the circuit.
I have already explained regarding a couple of DC to DC cellphone charging circuits, however all these are designed for charging a single cell phone. For charging more than one cell phone from an external DC source like an automobile battery, requires an elaborate circuit.
do, to charge two mobiles at a time from
your "12V BATTERY OPERATED CELL PHONE CHARGER CIRCUIT".(from bright
I am using the circuit from last 8 months, it's fine. Please post that article
in your new blog also.
blog in the "simple dc to dc cell phone charger circuit" but in vain.
Please answer here~
Sir, i used another 10 ohm 2 watt resistor in parallel with the existing one,
as i don’t have the higher watt resistor. It’s working fine. Thank you very
i have one doubt,
earlier, in bright hub in the same
article you told to use 10 ohm resistor, but here it is 5 ohm which is suitable
I have another question out of this article; please guide me could I use three
1N4007 silicon diode instead of one 1N5408 silicon diode?
My aim is to allow 3A current in only
one direction. But i don’t have diode of 3A i.e. 1N5408. As 1N4007 is of 1 amps
capacity could use three 1N4007 in parallel and like wise for 5A five 1N4007 in
parallel, because i have number of 1N4007
Use the following DC double cellphone charger circuit given below:
As you increase the limiting resistor value, the charging becomes slower,
therefore a 5 Ohm resistor would charge the cell phone faster than a 10 Ohm,
and so on.
I'll check the problem with the commenting in my blog...however other comments
are coming normally as usual! Let's see.
Thanks and Regards.
mail. . . Please. . .
T1 = BD140
D1 = 1N5408
The circuit of the double DC cell phone charger was successfully tried and built by Mr. Ajay Dussa over a home designed PCB, the following images of the PCB layout and the prototype were sent by Mr. Ajay.
The following circuit can be used for charging as many as 5 cell phones at a time. The circuit employs the versatile IC LM338 for producing the required power. The input is selected to be a 6V but can be as high as 24V.
A single cell phone can also be charged from this circuit.
The circuit was requested by Mr. Ram.