DIY progress report - Page 231

powerflux · 20th May 2012, 02:15 PM

Quote:

Originally Posted by jacco vermeulen

Had you reversed the D-S pins, the 10R wouldn't be source resistors anymore

you're right. the beautiful weather must be getting to my brain

thanks!

AndrewT · 20th May 2012, 03:03 PM

Fortunately these jFETs are manufacturer in a virtually symmetrical layout.
The D & the S can be swapped and the device will probably operate the same way.

With the dgs PIN out, you can insert these jFETs back to front and the circuit should still operate normally.

It's the ones where gate is not the centre PIN that cause build problems.

noSmoking · 28th July 2012, 04:44 PM

Quote:

Originally Posted by powerflux

I was wondering if i eagle'd this F5 correctly, my confusion was mainly with the pinout of the small jfets

attached: eagle shot and original pdf schematic

looks good ,but I would change the Parts number to match ,R1=R1 ,,,It gets confusing if you look at another schematic or if you do mods,

kwkwsr1000 · 9th November 2012, 02:23 PM

any informtion aboout NP's input on adcoms 555 amp in relations to the 555ll?

9th November 2012, 02:23 PM	#2304
kwkwsr1000 diyAudio Member Join Date: Dec 2010	adcom 555 amp any informtion aboout NP's input on adcoms 555 amp in relations to the 555ll?

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20th May 2012, 03:03 PM	#2302
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Fortunately these jFETs are manufacturer in a virtually symmetrical layout. The D & the S can be swapped and the device will probably operate the same way. With the dgs PIN out, you can insert these jFETs back to front and the circuit should still operate normally. It's the ones where gate is not the centre PIN that cause build problems.