Hi there,
I'm going to build a touch probe in the near future and I now have some plans (have a look at the 'Digitizing and Laser Digitizing' section). The probe uses an 'amplifier' so that it uses 12V while the signal to the parallel port is 5V. I have included the schematics for the electronics.
My machine uses a 35VDC power supply and I was wondering how I could modify these electronics to run off 35V, rather than 12V, so that everything is simplified. Here are some of the components that I would potentially use:
MOSFET:
http://uk.farnell.com/jsp/endecaSear...SKU=637488&N=0
Regulator:
http://uk.farnell.com/jsp/endecaSear...KU=4125411&N=0
I am aware that on the schematic it says that the MOSFET will go up in smoke at 16V, however in the data at the above link, it mentions a max voltage of 55V. Any thoughts on this?
One of the other problems is the resistors and capacitors. I would imagine that the sizes of these components on the schematic would be incorrect if I were going to use 35V. Sadly, I have no idea how to work out what these values should be, so any help on this would also be appreciated.
Are there any other suggestions for this? Do my ideas above sound half reasonable (and the components that I've mentioned)?
Thanks
Warren