Yes.
Many compressors have also used conventional jfets too ( using voltage control on the gate ).
Interesting. I just recently made a compressor using an adaption of that circuit myself.
The BSN10 is obsolete btw. I actually used a very high beta darlington bjt configuration in place of it. In fact I'm sure that'll work much better, the fet will suffer from Vgs(th) variations.
Graham
circuit
fet
I was going to try a 2N7002, but the Darlington might be better.
The tough thing to track down for that circuit is all the different pots: 10k, 50k, 500k, and 1M... all of them Log pots. I am going to use linear pots plus an external fixed resistor to approximate the log curve. Crude, but oh well.
Can you still get Silonix nsl32 light-dependent resistors? I see they have a call for letters in support of the cause.
--
Thanks,
- Win
As opposed to over here, where the telcos own the government.
I suppose if some fundie congressman doesn't want his 1-900 calling record to hit the press, its important to vote correctly.
--
Paul Hovnanian mailto:Paul@Hovnanian.com
------------------------------------------------------------------
APL is a write-only language. I can write programs in APL, but I
can\'t read any of them.
-- Roy Keir
Yes,
There are no direct equivalents to the Silonex parts.
The Chinese like using these......
Not sure if the old Vactrols are still around, ah they've been picked up by Perkin Elmer it seems.
Hamamatsu Photonics used to make some too. Can't find them now though.
Graham
I found this
and about 3/4 way down
The following are proposed exemptions, which are still pending a formal review.
item 10 Cadmium in opto-electronic components
martin
Did you see this one ? Under proposed exemptions.
8 Tin-lead solder in the manufacture of professional audio equipmentGraham
Missed that one.. too many Item 8's in the damn document. I dont know when the site was written, or who pb-free.info are.
I think its just a list of anyone who had a moan about RoHS, and fired off a email. It is a bit tortuous to actually find out how too "find out" about exclusions.
The DTI pages seem to have loads of info that is not legal, just guide lines. If they dont know..............
martin
I believe the items listed there are those currently formally under consideration for exemption by the European Commission.
Graham
Hello Martin,
It looks like information provided by a consultancy, Dionics PLC in the UK:
I don't think that it is just a groan list. They'd likely get into trouble if it was.
Regards, Joerg
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