Mpp

[Joachim Gerhard]

Michael, please give Frans the current demand.
I like the new solution without aditional cascode, it is simpler and as good so potentially better sounding because there is less semiconductor in the signal chain.

[MiiB]

Compared to the "old" paradise.. I do believe this revision 2 is way better...

Feel free to use the BC transistors in the mirror also. I think that they are a brilliant choice, but as stated, the quad arrays makes the design less prone to errors.

I have been working a little more and I can see one Jfet is at the limit, so it has now in doubled and current set at app 16mA input/mirror and 10mA through the buffer (only one sk170 left due to lowish cob. bf862 would also make a fine choice here..)

total consumption is then app 75 mA at both rails. Current can be lowered to app 50 mA if current is set at app 10ma trough the input/mirrors.(a change from 4 to 2,5mA each input transistor)

[Joachim Gerhard]

Thanks Michael. We should freeze this design now.

[FdW]

Originally Posted by MiiB

Compared to the "old" paradise.. I do believe this revision 2 is way better...

Feel free to use the BC transistors in the mirror also. I think that they are a brilliant choice, but as stated, the quad arrays makes the design less prone to errors.

I have been working a little more and I can see one Jfet is at the limit, so it has now in doubled and current set at app 16mA input/mirror and 10mA through the buffer (only one sk170 left due to lowish cob. bf862 would also make a fine choice here..)

total consumption is then app 75 mA at both rails. Current can be lowered to app 50 mA if current is set at app 10ma trough the input/mirrors.(a change from 4 to 2,5mA each input transistor)

I will setup the PSU with an 75 * 1.5 = 110 mA CCS.

[Joachim Gerhard]

OK, fine.

[FdW]

Originally Posted by FdW

Here is one, the mini ATL PSU + side. About 5 cm2

And now there are two (+15V and the 'dark'-side -15V)

[MiiB]

so you plan to integrate those into the center of the paradise too..??

[FdW]

Originally Posted by MiiB

so you plan to integrate those into the center of the paradise too..??

No these are intended for amplifiers, when you need to feed one or two opamps, they are underpowered for the 'Paradise DIY'. See also Mpp but they operate exactly the same.

[Joachim Gerhard]

Really cute. We should do a PCB for this mini shunts too. Any voluntary ?

[FdW]

Originally Posted by Joachim Gerhard

Really cute. We should do a PCB for this mini shunts too. Any voluntary ?

I am working on that