What will they think of next - the rejustor

[janneman]

If I would post this stuff you would probably think I'm pulling your leg: a solid state resistor that can be adjusted by electrically changing the physical properties. Enter the Rejustor.

http://www.mbridgetech.com/pdfs/MB-A...-Primer-AN.pdf

Jan Didden

[MadMutt]

A resistor, that changes value, when another signal is connected.

Isn't that a transistor ??

No I didn't read the pdf.

[janneman]

Originally posted by MadMutt
A resistor, that changes value, when another signal is connected.

Isn't that a transistor ??

No I didn't read the pdf.

No, because the new value stays when you take the 'set' voltage away. You should have read the pdf .

Jan Didden

[peranders]

Mr. Didden, this was a really new thing for me, very interesting for future projects.

[Juergen Knoop]

cool!

[AndrewT]

is it achieving the same effect as laser trimming but using software to trim?
It appears to be permanent, one cannot return back to the start value.

[peranders]

App note not says different. The rejustor can be changed a dozen of times at least.

[theAnonymous1]

Originally posted by peranders
App note not says different. The rejustor can be changed a dozen of times at least.

But only back to a very small percentage of its original value.

Rejustors are specified at a nominal as-manufactured resistance. The adjustable range is at-least 30%
down from the as-manufactured resistance. For example, a 10K Rejustor can be adjusted down to 7K.
Rejustors are adjustable bi-directionally; however physics in the Rejustor structure and material limits the
ability to adjust the Rejustor back to its nominal value.

The up adjustment range is constrained to 1.5% to 5% of the absolute adjustment range. For example a
10K Rejustor adjusted down 10% (to 9K) could be adjusted as high as 2% up (to 9.2K). The same
Rejustor adjusted down 30% (to 7K) could be adjusted up about 5% (to 7.4K).

[forr]

1 mW per device ?

[soongsc]

Programmable resistor.