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General Mach Discussion / Re: PWM Spindle Control using Mach3 - How I did it
« on: September 04, 2014, 02:46:12 PM »
Firstly, Thanks Chris for your well documented info for the PWM converter.
l have bought one of the China spindles kits that included the VSD, which I knew would not be the best VSD.
The VSD does not have a PWM input, so I also need to convert the PMW signal sent from my smooth-stepper controller, to a 0-10V input for the speed VSD.
I bought the required parts today, but need to confirm the part number for the input transistor. My local electronic supplier supplier me with a surface mount BC848, but all the other parts are "through hole".
In the pictures of the converter already built, transistor does not look like a surface part. I first though they supplied me the incorrect part, but when I Google BC848 it also shows it as a surface part.... some help please...
Then I also understand that there is an issue with the GND in the Schematic, so was wondering if the correct Schematic could be placed on the site to help us novice electronics guys...
l have bought one of the China spindles kits that included the VSD, which I knew would not be the best VSD.
The VSD does not have a PWM input, so I also need to convert the PMW signal sent from my smooth-stepper controller, to a 0-10V input for the speed VSD.
I bought the required parts today, but need to confirm the part number for the input transistor. My local electronic supplier supplier me with a surface mount BC848, but all the other parts are "through hole".
In the pictures of the converter already built, transistor does not look like a surface part. I first though they supplied me the incorrect part, but when I Google BC848 it also shows it as a surface part.... some help please...
Then I also understand that there is an issue with the GND in the Schematic, so was wondering if the correct Schematic could be placed on the site to help us novice electronics guys...