2 Cell phone chargers in series to make 10V

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areebaa

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Hi,
I would like to make 10V from two 5V cell phone chargers to power the portable small fan and ultrasonic transducer of humidifier. So, can i connect the outputs of cell phone chargers in series to make 10V.
thanks
 

areebaa said:
Hi,
I would like to make 10V from two 5V cell phone chargers to power the portable small fan and ultrasonic transducer of humidifier. So, can i connect the outputs of cell phone chargers in series to make 10V.
thanks
Click to expand...

without knowing how the grounds of each charger is connected internally , you cannot connect them in series.
 

srizbf said:
without knowing how the grounds of each charger is connected internally , you cannot connect them in series.
Click to expand...


i mean in this way as shown in picture
 

is there any connection between mains and -ve dc supply terminals internally ?
 

1st you remember and chek two chargers are identical one means its current ratings are same,voltage rating can be variable by placing 4148 or any diode in bet +ve of first and -ve gnd of second you can archive 10 v
 

no it is isolated i think

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srizbf said:
is there any connection between mains and -ve dc supply terminals internally ?
Click to expand...
no it is isolated i think
 

areebaa said:
no it is isolated i think

- - - Updated - - -


no it is isolated i think
Click to expand...

make sure that.
then you can treat it as in your fig as two 5v batteries.
 

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