Depletion-Mode FETs

[John Woodgate]

I read in sci.electronics.design that Spehro Pefhany <speffSNIP@interlog
DOTyou.knowwhat> wrote (in <m83s11dd4r8ckd7er4u8sj5e3ncuhck9mr@4ax.com&gt
about 'Depletion-Mode FETs', on Thu, 24 Feb 2005:

P.S. does it bother anyone else that "octal bases" can have other than 8
pins? Probably not.

See my other article. All these contact arrangements have romantic names
and/or alphanumeric codes.
--
Regards, John Woodgate, OOO - Own Opinions Only.
The good news is that nothing is compulsory.
The bad news is that everything is prohibited.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk

 

[Tony Williams]

In article <qf9p111l6kulg9crr2albb1pfmh42879s5@4ax.com>,
John Larkin wrote:

It's a shame that all the SSRs (or all the ones I've tried) have
a schmitt-like driver in the opto path. If the control were
linear, all sorts of interesting things would be possible.

The old fashioned LED+optotransistor have soft transfer
characteristics but the PhotoMOS switches I have looked
at seem to have a knee...... nothing happens up to (say)
1mA of LED current, then everything happens in the next
0.1mA increase.

--
Tony Williams.