Mpp

[Bksabath]

Pre regulator PCB
Common mode to spek 20X30 pin out
100 nF caps 5 mm foot print
Beter?
I have used 1mm thick tracks agin this can be changed

[FdW]

Dear All,

Although our ‘Alien Technology Lab’, short ATL, did say that they would stop working on the 'Area 51' circuit, it seems that some rogue developer(s) continued there obsessive analysis efforts.

The results, of the new (unofficial, rogue edition) ATL efforts must be kept secret (jobs may depend on this), so please keep this information to yourself (don not let it out in the open).

Attached is the extended ATL circuit collection (circuits L and M added).

This ATL technology is freely available to anyone mad (or brave) enough to try it, use the attached files with care. When using any of these ATL findings please add an acknowledgement to ‘Area 51’-component and ATL to your project.

Regards,
Acting for ATL,
Frans.

Originally Posted by FdW

Dear All,

Our ‘Alien Technology Lab’, short ATL has been working on variations of the ‘Area 51’ component. The result of the ATL work is attached to this message. Early ATL results show that the performance of the standard circuit can be improved by up to 50 dB (in the early ATL prototypes).

This ATL technology is freely available to anyone mad (or brave) enough to try it, use the attached files with care. When using any of these ATL findings please add an acknowledgement to ‘Area 51’-component and ATL to your project.

No further work/development will be done (on this subject) by the ATL department.

Questions will be answered in this forum.

Regards,
Acting for ATL,
Frans

[FdW]

Originally Posted by Bksabath

Pre regulator PCB
Common mode to spek 20X30 pin out
100 nF caps 5 mm foot print
Beter?
I have used 1mm thick tracks agin this can be changed

This is starting to look real nice. One thing I would like to see changed, make the tracks a bit wider, this would make the board also usable beyond 150 mA (maybe up to 2 or 3 amps).

This has the footprint http://www.reichelt.de/Bauelemente/C...6175882e8ff34c

And there are other variations (with more mH's then this one (but less than the first one)) that would fit in that footprint.

Regards,
Frans.

[Joachim Gerhard]

Bksabath, what kind of electrolytics are you planning ?
I usually use Panasonic FM but others like Rubicon, Nichicon, Frotyth etc. will work well too and should have the same footprint.

[Joachim Gerhard]

Frans, i like the ones with the switched coils. Do you need a microprocessor to steer this ?

[FdW]

Originally Posted by Joachim Gerhard

Frans, i like the ones with the switched coils. Do you need a microprocessor to steer this ?

The intention is to have them permanent on (in place) (is what the people at the ATL tell me). The reason for the switches is to remove them from the circuit for performance measurements (it would not be fair to the other circuits, tells one of the ATL developers).

[FdW]

Originally Posted by FdW

The intention is to have them permanent on (in place) (is what the people at the ATL tell me). The reason for the switches is to remove them from the circuit for performance measurements (it would not be fair to the other circuits, tells one of the ATL developers).

And yes, maybe they (the ATL people) use a 'main frame' (or even microcomputer) to control this

Actual current ATL hardware

[Bksabath]

Hi Frans
Tanks
Wider traks
Agree with you on that.

I was also looking at the track going to Q3 and Q7 In my drawing which is a bit long.

To keep cost down and ease of home brew I would like to keep the single sided board.
Would a wire Jumper bee too bad?

Another thing that may be looking up is the choice of capacitors.
The MKP 1837 has a pitch of 5 mm.
There are alternatives such as the MKP B32625 Epcos, MKP375 BCcomponents,MKP378
those have pitch of 22.5 mm (Farnell stock)
Changing from 5.5 to 22.5 for Your SCH C15/C18/C19/C22 would alowd for much larger tracks
Altrought with the 5 mm pitch those could and will be increased to at least 2 mm.

Don't worry about putting things forward I don't mind making any changes as needed.
And got refilable cartriges on printer...

[Bksabath]

Originally Posted by Joachim Gerhard

Bksabath, what kind of electrolytics are you planning ?
I usually use Panasonic FM but others like Rubicon, Nichicon, Frotyth etc. will work well too and should have the same footprint.

Any shape and sizes can be used as you wish There is plenty of space on the board
As one of the pins on both sides is to ground al needed is placing a pad on the ground plane.

Eventualy we need to consider the board size to reduce waste but still early for that

[FdW]

Originally Posted by Bksabath

Hi Frans
Tanks
Wider traks
Agree with you on that.

I was also looking at the track going to Q3 and Q7 In my drawing which is a bit long.

To keep cost down and ease of home brew I would like to keep the single sided board.
Would a wire Jumper bee too bad?

Another thing that may be looking up is the choice of capacitors.
The MKP 1837 has a pitch of 5 mm.
There are alternatives such as the MKP B32625 Epcos, MKP375 BCcomponents,MKP378
those have pitch of 22.5 mm (Farnell stock)
Changing from 5.5 to 22.5 for Your SCH C15/C18/C19/C22 would alowd for much larger tracks
Altrought with the 5 mm pitch those could and will be increased to at least 2 mm.

Don't worry about putting things forward I don't mind making any changes as needed.
And got refilable cartriges on printer...

I would like a dual sided board, when home brew (single sided) you would do the bottom layer only and have one or two jumpers; otherwise they would go on the top side. Having two sides you would use the top side as a ground plane. How would that be?

The MKP's would be fine with me, but my say on capacitors should not be definite