My Mach3 Charge Pump Design

FabLab · Post by **FabLab** » Sun May 24, 2020 7:59 pm

I built the following charge pump for my Mach3 controlled machine, it works well so I thought I would share it...

ChargePump-PCBmach3.pdf

ChargePumpMach3.pdf

Post by **AREA** » Mon May 25, 2020 10:54 am

Pardon my ignorance but I am curious as to what a charge pump is?

FabLab · Post by **FabLab** » Mon May 25, 2020 12:10 pm

Mach3 will output a 12.5kHz signal when its running, with the use of a charge pump you can disable the electroics, motors, etc. on you machine until Mach3 is fully up and in control.

Because I am using a parallel port to control my machine if the PC is rebooted unwanted signals can be sent out of the parallel port causing unexpected machine movements

Its just a safety thing my circuit design uses a relay to cut the power to my power supply until Mach is running

Post by **acourtjester** » Mon May 25, 2020 5:55 pm

Thanks for the explanation I have seen the Plasma torch fire when Mach is powered down, not good

Post by **AREA** » Mon May 25, 2020 6:37 pm

Ahhhhh, I see now. Thanks for the explanation, I was curious.

FabLab · Post by **FabLab** » Tue May 26, 2020 5:26 pm

acourtjester wrote: ↑Mon May 25, 2020 5:55 pm Thanks for the explanation I have seen the Plasma torch fire when Mach is powered down, not good

Yeah, me too the 2nd time that happened to me I decided it was time to do the charge pump.

FabLab · Post by **FabLab** » Tue May 26, 2020 5:29 pm

AREA wrote: ↑Mon May 25, 2020 6:37 pm Ahhhhh, I see now. Thanks for the explanation, I was curious.

No problem glad to help

My Mach3 Charge Pump Design

My Mach3 Charge Pump Design

Re: My Mach3 Charge Pump Design

Re: My Mach3 Charge Pump Design

Re: My Mach3 Charge Pump Design

Re: My Mach3 Charge Pump Design

Re: My Mach3 Charge Pump Design

Re: My Mach3 Charge Pump Design