It actually will detect a negative DC fault. The schematic symbol is wrong. It's a bi-directional opto. I experimented with them but didn't like them.
"INFIDEL V1" is done (below). Very simple "Blameless" type design , similar to the Badger/Wolverine. In SMD , with matched
dual semi's - it could possibly outperform those IPS's. It will run cooler , I've dialed the main CCS current down to 3mA with no
THD degradation.
dual semi's - it could possibly outperform those IPS's. It will run cooler , I've dialed the main CCS current down to 3mA with no
THD degradation.
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I'm at an impass , I can't find the right board to board connectors. I wish someone knew what type the Wolverine uses.
Mouser has too many choices.
Mouser has too many choices.
| 575-8001001410001000 - Mill-Max - 3.18mm |
| 437-8018301410001101 - Preci-dip - 7.0mm |
Yah ! Thank you buddy !! I just wanted the socket (female) . For the male on the SMD board , I will use a right angle .1" 14-position to have the IPS at a right angle to the OPS. Mini can then go in any E-waste chassis , or 4 of them in a fancy DIYA 2U/3U chassis. Mount a mini OPS "flat" , even a 1U !
OS
I used 437-8018301410001101 and 437-8001001610001101 the later being 16 pins but it was easy to cut 2 positions off. It costed a few $ less.
What's expensive ? Mouser has them at $2.55. A bit expensive for what it is , but not real bad ?
Does presi-dip make a right angle male ? I do see the pins are round , most header pins are square.
Oh , wow ! Milli-max really is too expensive ... almost 7$ for a header ?
OS
Does presi-dip make a right angle male ? I do see the pins are round , most header pins are square.
Oh , wow ! Milli-max really is too expensive ... almost 7$ for a header ?
OS
Molex makes all kinds on .100" headers and with keying options and friction locks so you can't miss and it won't come unplugged. You can but male breakaway header for way less than that
I used female TE Connectivity 1-215297-4 with male Samtec TSW-114-07-G-S for Wolverine. Cheaper, gold-plated and perfect match with 10mm standoffs.
The small size of these SMD PCB's would even allow the IPS to be remote on the back panel (ribbon cable).
I've seen this on JC's Parasound and other high end equipment . IPS and aux stuff all on the back panel with the OPS's fed by 2 ribbons....
PS - a dual row (2 X14 position) would provide better connections and still be backwards compatible.
OS
I've seen this on JC's Parasound and other high end equipment . IPS and aux stuff all on the back panel with the OPS's fed by 2 ribbons....
Friction lock ? Part #'s ? I'm collecting specifics (PDF's) for my BOM's.
PS - a dual row (2 X14 position) would provide better connections and still be backwards compatible.
OS
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90147-1314 is the standard female header, 22-18-2141 is the female friction lock version. 22-28-4144 is standard male breakaway header. 22-29-2141 is the friction lock version. 22-12-2144 is the right angle friction lock if you want to stand the input board up.
Cool , I've seen these on various OEM boards . But if I go 2 row .. might not need it.
2 row is much more common (used) , and cheaper. Also , 2 row would have 2 pins in contact - for each voltage .
Still , compatible with the 1 row standard AND will be better with right angle mounting (or a ribbon cable).
2 row would also be easy on the SMD IPS's , just extend the connector end of the PCB out 5mm , add the 2 row.
And , everything would still fit a Wolverine EF3 PCB.
OS
2 row is much more common (used) , and cheaper. Also , 2 row would have 2 pins in contact - for each voltage .
Still , compatible with the 1 row standard AND will be better with right angle mounting (or a ribbon cable).
2 row would also be easy on the SMD IPS's , just extend the connector end of the PCB out 5mm , add the 2 row.
And , everything would still fit a Wolverine EF3 PCB.
OS
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Two row it is. IPS's enlarged to 50 X 80mm , but that is still 5mm short of a standard credit card (55 X 83 ?).
For the mini OPS , this allows a sturdy direct plug-in .... even at 90 degrees to the OPS.
Plug in a male 2-ended header , and you could connect to one of these with a old computer peripheral flat ribbon cable.
My new template will be a dual row 14 position , and be backwards compatible with any SIP (wolverine) hardware.
For the mini OPS , this allows a sturdy direct plug-in .... even at 90 degrees to the OPS.
Plug in a male 2-ended header , and you could connect to one of these with a old computer peripheral flat ribbon cable.
My new template will be a dual row 14 position , and be backwards compatible with any SIP (wolverine) hardware.
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New , perfect Hellraiser and Infidel (with logo) is at first post. Absolute perfection !
I would actually say I have 101% confidence in both these 2 designs (and layouts).
On the infidel , (below 2) .... I have TPC (2 -pole) , TMC , and jumpering C6 and omitting Ropt + R18
will give you plain Miller compensation. Dopt is the optional Baker clamp. Baker clamp is not critical , as on
the Wolverine.
D3L will show operation of the main LTP current source , any color you want. D5L is the VAS cascode reference , any LED >2V (any color)
gives proper operation. If it lights up - it works ! D4L (VAS CCS)should be any orange/red led at 2V Vf. My LED's are not "eye candy" , they are integrated
components that both set operating points and indicate proper operation.
The G2 pad can be soldered on a copper sheet (with proper cutouts for leds and trimmers) to give this "credit card IPS' a faraday cage....
The new Hellraiser is absolutely compatible with the last posted one , just the dual row card connector and some fine tuning of the layout.
The Hellraiser diamond buffer input stage was so "finicky" when I built the "Slewmaster Kypton" (V1.0 hellraiser). Just a tiny current source difference
, thermal or mismatch would create offset. then I servo'ed it ! Perfect. Using the BC-817DPN (TSOP-6) should take care of the matching issue and
on the Spook I use with the same servo .... microvolt offsets.
I only ran the Kypton/hellraiser for a few days , but it had the HF ace'ed . Super crystal clear bell-trees ,brushes , it's imaging was quite noticeable.
CFA does have a tradeoff - warm (R15-R18-1W) resistors for killer highs !
OS
I would actually say I have 101% confidence in both these 2 designs (and layouts).
On the infidel , (below 2) .... I have TPC (2 -pole) , TMC , and jumpering C6 and omitting Ropt + R18
will give you plain Miller compensation. Dopt is the optional Baker clamp. Baker clamp is not critical , as on
the Wolverine.
D3L will show operation of the main LTP current source , any color you want. D5L is the VAS cascode reference , any LED >2V (any color)
gives proper operation. If it lights up - it works ! D4L (VAS CCS)should be any orange/red led at 2V Vf. My LED's are not "eye candy" , they are integrated
components that both set operating points and indicate proper operation.
The G2 pad can be soldered on a copper sheet (with proper cutouts for leds and trimmers) to give this "credit card IPS' a faraday cage....
The new Hellraiser is absolutely compatible with the last posted one , just the dual row card connector and some fine tuning of the layout.
The Hellraiser diamond buffer input stage was so "finicky" when I built the "Slewmaster Kypton" (V1.0 hellraiser). Just a tiny current source difference
, thermal or mismatch would create offset. then I servo'ed it ! Perfect. Using the BC-817DPN (TSOP-6) should take care of the matching issue and
on the Spook I use with the same servo .... microvolt offsets.
I only ran the Kypton/hellraiser for a few days , but it had the HF ace'ed . Super crystal clear bell-trees ,brushes , it's imaging was quite noticeable.
CFA does have a tradeoff - warm (R15-R18-1W) resistors for killer highs !
OS
Attachments
I now work on the "Symasui" , it will have the exact same input stage as Infidel with a different VAS. I will include all
of printnik's compensation options plus clip diodes, TMC,TPC , or straight miller as options.
Spook will be upgraded to the new size and connector AND still be quite compatible with the present one.
Then all my efforts will be on BOM's and documentation. You need to have 100% designs/layouts to build any
documentation on. These IPS's .... - it will be easy to build several of them and just offer them completed so builders can
just assemble the OPS's and still have fun , I understand some builders just DON'T like SMD.
OS
of printnik's compensation options plus clip diodes, TMC,TPC , or straight miller as options.
Spook will be upgraded to the new size and connector AND still be quite compatible with the present one.
Then all my efforts will be on BOM's and documentation. You need to have 100% designs/layouts to build any
documentation on. These IPS's .... - it will be easy to build several of them and just offer them completed so builders can
just assemble the OPS's and still have fun , I understand some builders just DON'T like SMD.
OS