[sdiy] André Majorel's Synth-DIY resources: VCAs, transistor arrays etc.

[Robin Whittle]

There's a page by André Majorel, compiled in part from messages on this
list, which summarizes and analyses many items of interest, not least
the current and past options for VCAs (transconductance amplifiers),
dual matched transistors, transistor arrays etc.

  http://www.teaser.fr/~amajorel/sourcing/

The headings of the most extensive sections are:

   Capacitors

   Potentiometers

  *Tempcos - temperature dependent resistors for exponential converters

   Audio transformers

   Reverb tanks

   Oscillators and top octave generators

  *OTAs - VCAs - transconductance amplifiers

   Voltage references

  *Transistor arrays - dual transistors - matched pairs (PNP and NPN)

   Vactrols - LED drives light dependent resistor

  *Manufacturers and resellers

I have marked * those sections which I think are the best source of
information I know of on these topics for Synthesizer DIY.  I found the
sections on VCAs and transistor arrays especially helpful.

For dual JFETs, see
http://www.linearsystems.com/products.php?pr=jfet-amplifiers--duals.

  - Robin    http://www.firstpr.com.au/rwi/dfish/