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GEOFEX JEFT Matching

Posted: 21 Dec 2011, 01:11
by bruin2k3
http://www.geofex.com/Article_Folders/f ... tmatch.htm

Being a total noob at this, I'm having trouble reading the the schematic for the JFET Matcher. I get that the +ive goes to pin 8 and the -ive into pin 4. Is the pin to the right for pin 1 (or 7), the pin on bottom to pin 3 (or 5) and the pin on top to pin 2 (or 6)?

thanks in advance!

Re: GEOFEX JEFT Matching

Posted: 21 Dec 2011, 04:09
by .Mike
bruin2k3 wrote:Is the pin to the right for pin 1 (or 7), the pin on bottom to pin 3 (or 5) and the pin on top to pin 2 (or 6)?
Yes. ;)

Assuming you are using a dual opamp, they are sets. Use pins 1-2-3, or use pins 5-6-7. Your choice.