Hi there,
I have a circuit with a 12v input, and a series of low-current devices. There are two pairs of these devices on seperate circuits switched by a SPDT switch.
I've put a pair of resistors from one output of the switch to the 0v line, and put a line from between these two resistors to the other output on the switch (So some power is given to one when either is on).
My only concern is current. In total, the devices being powered by the half-voltage the potential divider gives is drawing about 319mA (approx. 25). The resistors being used are the bog standard 470 ohm ones that are used on each of the devices - and I think they only have a current of 25mA.
Is this a big problem in potential dividers? I dont really know much about them.
If so, can I put several of these resisitors in parallel on each end and help spread the current out? I know this will increase the output voltage but I don't really care that much.
Thanks guys![Big Grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
I have a circuit with a 12v input, and a series of low-current devices. There are two pairs of these devices on seperate circuits switched by a SPDT switch.
I've put a pair of resistors from one output of the switch to the 0v line, and put a line from between these two resistors to the other output on the switch (So some power is given to one when either is on).
My only concern is current. In total, the devices being powered by the half-voltage the potential divider gives is drawing about 319mA (approx. 25). The resistors being used are the bog standard 470 ohm ones that are used on each of the devices - and I think they only have a current of 25mA.
Is this a big problem in potential dividers? I dont really know much about them.
If so, can I put several of these resisitors in parallel on each end and help spread the current out? I know this will increase the output voltage but I don't really care that much.
Thanks guys