Current controller

Has anyone got any ideas how to build a 12V current controller to vary between 0 and 10 amps?

needed fur a project.

i may have what ye need. grab me next time yer on msn

buy one from rs components or farnells.

You having trouble with currants then?

No Grunt currEnt - not currAnt.
yu really will have to learn to read, as well as spell

ormus said:

buy one from rs components or farnells.

Click to expand...

none of the ones I have seen do 12-15Volts and circa 3 Amps.

well?

I have a Farnells one here ... model L30B ... up to 30 volts but only one amp max.

What current do you need to handle?

CharlesY

CharlesY

The Mad Hat Man said:

Has anyone got any ideas how to build a 12V current controller to vary between 0 and 10 amps?

needed fur a project.

Click to expand...

alot

CharlesY said:

I have a Farnells one here ... model L30B ... up to 30 volts but only one amp max.

What current do you need to handle?

CharlesY

CharlesY

Click to expand...

the L200C does 2A so add a beefy tranny and bobs your uncle

The Mad Hat Man said:

Has anyone got any ideas how to build a 12V current controller to vary between 0 and 10 amps?

needed fur a project.

Click to expand...

does the output voltage need to be stable under load or variable?

assuming you have a 12V input what output are you looking at ?

now thas a very good question.
The project is the use of a Nissan X-trail rear diff and 2/4wd unit in the back of a Hippoo - all I know at the mo is that the 4WD ECU provides a signal to the 'VCU' which is controlled by current (not volts). I did post the details on here somewhere, I will see if I can find them, although a Hippoo wouldnt need proportional 4WD - a simple 2wd/4wd switch would do the job.

here is a related article - this car uses the same Attessa system (but in reverse (rwd to 4wd)

The Mad Hat Man said:

now thas a very good question.
The project is the use of a Nissan X-trail rear diff and 2/4wd unit in the back of a Hippoo - all I know at the mo is that the 4WD ECU provides a signal to the 'VCU' which is controlled by current (not volts). I did post the details on here somewhere, I will see if I can find them, although a Hippoo wouldnt need proportional 4WD - a simple 2wd/4wd switch would do the job.

Click to expand...

i'd be very supprised if any car control system worked on a variable current signalling, especially that sort of ampage - even cooling the output of a 12v/10A variable current source would require something more than just passive ventalation - but then if the voltage didnt need to be stable across the load a very heavy duty nicad charger could probably be modified to suit

thats wot the write-ups state. Here is an article on a DIY controller maybe we are getting closer

The Mad Hat Man said:

thats wot the write-ups state. Here is an article on a DIY controller maybe we are getting closer

Click to expand...

ok that sorta makes sense - the LF411 is just an op amp and looks to be configured as some form of exponential amp - what makes you think you needed a variable current controller, or did i read it too quick

Have a read of these.

i will in the morning when i am sober

anything i come up with at this time of night is likely to explode without warning

ah... i see where they get they variable current from - there's a bloody dynamo attached to the back of the clutch

hmmm i might see it all in a different light in the morning

"Can you elaborate on how you are controlling the "fully adjustable tq split (ATTESSA deleted)" setup

And also the electronic piece you are working on using? Will it be like a racelogic and can you control it via a PWM output or ?

i actually have two methods of controlling it electronically. We have one that is a 12V pump setup which can be PWM modulated. I got it setup in my car and i wasnt pleased with the complexity of it... I think its a little too much overkill, so i have spent the last two weeks designing a new setup that is very simple and clever, which uses current to control it. Ill hopefully have that up and running by SEMA, its the last piece of designwork."

ahah!