Aww. Does that mean my voltage regulator is fried? so if i get a new one
and i connect it like you say, i wont have this heat problem ? and then i
can connect the output to my stepper motor, and the gnd to the other
terminal of the stepper motor?
A stepper motor won't work with DC. It'll just sit there and heat up.
You need a stepper motor control IC to produce the pulsed control signals to
drive it properly. This is one of the reasons I don't tend to use them.
One thing to remember is that the 7805 is a linear regulator. This means
that it is trying to supply voltage and current regardless of whether or not
your circuit (load) is drawing anything. If you don't hook up a load, it
still heat up somewhat.
That said, when the 7805 and other similar members (7812, etc.) break
down, they get extremely hot and do not regulate voltage at all in many
cases. Chances are you probably did burn it partially out by some means
As far as Steppers using DC current. Yes they do. A stepper has two
functions: (1) move a determined amount when the phase changes and
(2) remain locked when the phases do not change. I think the earlier
post was assuming you did not want to ever remain in the locked position,
but that is one of the nice attributes of a stepper. If you want to move
the stepper, you will most certainly have to use some sort of arrangement
to move it around. Darlington transistors work well as do MosFets. In
Gordon's book(s) he has several examples of how do to this and control
the direction via CMOS/TLL logic. With respect to Gordon, these examples
are by no means the only way to do it. You could do it with relays; not
clean or elegant, but they will not heat up as much as the transistors.
Perhaps an acceptable approach would be to get a stepper controller chip
(or make your own circuit using std logic parts) and then beef up the
to match your requirements.
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