Moving on from the disappointment of the F6’ inability to drive the electrostatics….I’m working on a 3 stage AB with lateral fets and minimum idle current requirement. So I updated spice to xvii to make a start.
I tested spice with a jfet buffer (2sk170/2sj74)and tinkered with the models to get the idss to match. I noticed that the buffer output has a distinct DC offset, varying with the idss match.
Anybody got a feel for the effects of an offset in an early stage. Academic in this project because I'm unlikely to use such a buffer here, just curious.
dc offset
#1 dc offset
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- IslandPink
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#2 Re: dc offset
First I've heard of the F6 problem !
But seriously, interested to know in what way it failed and just thinking about whether you can insert the electrostats as a complex load in Spice and verify where you're going with this new amp ?
No rush ....
But seriously, interested to know in what way it failed and just thinking about whether you can insert the electrostats as a complex load in Spice and verify where you're going with this new amp ?
No rush ....
"Once you find out ... the Circumstances ; then you can go out"
#3 Re: dc offset
see here!, now pay attention I'll be asking the difficult questions shortly.
http://www.audio-talk.co.uk/phpBB3/view ... f=9&t=7086
It hasn't failed..it's back in the studio set-up driving ariels.
http://www.audio-talk.co.uk/phpBB3/view ... f=9&t=7086
It hasn't failed..it's back in the studio set-up driving ariels.
I'm happy with the tpa3116 for what it's worth but after playing with a couple of budget SS class AB amps, one of which took 13 watts out of the wall, I'm curious to see if I can come up with something. It will make a change from taking 300 watts out of the wall if I pull it off. I'm looking at it in an 'object oriented' kind of way, treating each amp stage as though it were a class in an OO program development.and verify where you're going with this new amp ?
There's nowhere you can be that isn't where you're meant to be
#4 Re: dc offset
I would guess it would be entirely dependent on what follows it.Anybody got a feel for the effects of an offset in an early stage
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.