I'm working on an experiment that requires a variable voltage that I can easily control by turning a dial.
I'd like to make this a simple/small power supply requiring one 9V battery and a bread board plus the other components.
All it has to do is this
9V > Dial > leads
I don't know any exact power output that I would like yet but then this power supply will also need to get connected to an H-bridge which will then be connected to a soleonid.
But it's all going to very small
Just a side note, any idea where I can get cheap easy to get cylindrical magnets say 1/4 - 3/8 diameter with a hole in the middle?
Thanks for the help
One more thing, how reliable are these needle voltmeters?
I'd like to make this a simple/small power supply requiring one 9V battery and a bread board plus the other components.
All it has to do is this
9V > Dial > leads
I don't know any exact power output that I would like yet but then this power supply will also need to get connected to an H-bridge which will then be connected to a soleonid.
But it's all going to very small
Just a side note, any idea where I can get cheap easy to get cylindrical magnets say 1/4 - 3/8 diameter with a hole in the middle?
Thanks for the help
One more thing, how reliable are these needle voltmeters?