PCB & circuit design

[dfen5]

Might have a project coming up, low volume, where I need to ‘fool’ a machine into thinking a small DC motor with tacho feedback is connected.

Basically it will involve scaling the DC voltage power output to a 0-10v signal and giving a separate DC feedback signal.

Anyone into circuit design or recommendations for a company into bespoke ccts?

[matjk]

Sounds interesting , tacho feed back is normally a pulsed signal , is it converted to dc on the motor ? I’ve got a few projects I’m designing PCBs for , haven’t done a design for about 6 years but should be like riding a bike I hope. What you need sounds very simple , should be able to sort it easily but would need some more details.

[matjk]

Some times I wonder why I bother replying to these messages ! I’m Out

[Smiler.]

Andy @ Morgatronic.

Top bloke, quality work, reasonably priced.

[dfen5]

Sorry, too much on at the minute with on thing and another. Looks like the project is going ahead, just going about setting up to measure output signal min - max and tach generator volts return on the existing system.

[dfen5]

matjk said:

Sounds interesting , tacho feed back is normally a pulsed signal , is it converted to dc on the motor ? I’ve got a few projects I’m designing PCBs for , haven’t done a design for about 6 years but should be like riding a bike I hope. What you need sounds very simple , should be able to sort it easily but would need some more details.

Tacho feedback is from a brushed pickup on a commutator on the back of the dc motor, bit like a dynamo. Think it’s 36v output per 1000 rpm but just getting set up over the next few days to see what’s what.