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Regards,
Tibi
United Kingdom
Russia
Austria
India
Canada
Singapore
Finland
Australia
Serbia
Denmark
USA
Portugal
Poland
Romania
Macedonia
Germania
Regards,
Tibi
Hi Tibi,
thanks - so I can use Sanyo Oscon for C10 and parallel the existing C19 with silva mica ;-)
sorry, but C43 is still not clear to me:
- Sanyo OSCON is an aluminium soild capacitor with conductive polymer (according to datasheet for SP series)
what type / brand of capacitor do you mean with polymer then
thanks
Christoph
Hello everyone represented in this list. Looking forward to seeing lots of great build photos in this thread!
I'm planning to try sandwiching mine between two pieces of 3/4"slate - one for the top plane of the actual unit (sides will be american chestnut, base plate is 6mm aluminium) and then with brass isolating cones it will sit on top of another piece of slate. Nice and heavy. Mechanism isolation using springs from RC 4wd suspension. In my head its fabulous - lets just wait to see if my build skills match my imagination.
Hello sthcoaster,
mine will be built into a small aluminium casing.
regards
Christoph
Hi Christoph,
IMHO Sanyo OSCON is the best organic semiconductor polymer capacitor. As far I know you will not get OSCON 1000uF/16V.
Usually OSCON is low voltage at higher capacitance.
For C43 you may use any other polymer cap. Panasonic is OK.
For example:
A750MS108M1CAAE013 KEMET - Capacitor: polymer | TME - Electronic components
A750MS108M1CAAE013 - KEMET - Electrolytic Capacitor, 1000 µF, 16 V, A750 Series, Radial Leaded, -55 °C | Farnell element14
16SEPF1000M - PANASONIC ELECTRONIC COMPONENTS - Electrolytic Capacitor, OS-CON, 1000 µF, 16 V, SEPF Series, -55 °C | Farnell element14
Regards,
Tibi
IMHO Sanyo OSCON is the best organic semiconductor polymer capacitor. As far I know you will not get OSCON 1000uF/16V.
Usually OSCON is low voltage at higher capacitance.
For C43 you may use any other polymer cap. Panasonic is OK.
For example:
A750MS108M1CAAE013 KEMET - Capacitor: polymer | TME - Electronic components
A750MS108M1CAAE013 - KEMET - Electrolytic Capacitor, 1000 µF, 16 V, A750 Series, Radial Leaded, -55 °C | Farnell element14
16SEPF1000M - PANASONIC ELECTRONIC COMPONENTS - Electrolytic Capacitor, OS-CON, 1000 µF, 16 V, SEPF Series, -55 °C | Farnell element14
Regards,
Tibi
Hi there,
Any idea what is the power consumption and the load character of each V1..V4? Trying to choose the proper 5V regulators ..
Thanks,
Any idea what is the power consumption and the load character of each V1..V4? Trying to choose the proper 5V regulators ..
Thanks,
You wanna see "heavy"? This is my original shiga machined from solid aluminum.
You might not want to add the suspension to the laser mech. Direct mounting sounded better to me.
An externally hosted image should be here but it was not working when we last tested it.
upload gambar
An externally hosted image should be here but it was not working when we last tested it.
20mb image hosting
V1 need at least 200mA for proper laser operation. I recommend a 500mA regulator.
V2 100mA . A 300mA regulator will be fine.
V3 and V4 will run OK at 50mA. Here my miniregs are delivering 150mA.
Regards,
Tibi
Very nice Shiga in a pure diy setup. Congratulations !
I like your crossovers . I also consider that crossovers place is outside speakers, mainly due huge vibrations.
Use a resin or at least silicon to cover crossover parts. Will sound even better.
Regards,
Tibi
Thanks Tibi.
Any suggestions as for the regs parameters required for each V - low impedance, low noise, bandwidth?
Regards,
Any good regulator must be low-noise, high bandwidth and high current (low impedance). 😉
For quick solution you may use LT1086-5 in all positions V1..V4.
During operation LT1086-5 may be slightly unstable. As a solution, solder a 47uF tantalum cap directly on the LT1086-5 pins.
For even better performance, you may use Salas Reflektor-D on V1 and V2 and miniregs for V3 and V4.
Regards,
Tibi
Last edited by a moderator:
Thanks Tibi, Im planning to build and box and cover the crossovers in resin after I finish tweaking them.
Wow! That's something to aspire to!
Thanks for your comment. Direct mount would certainly simplify things. I'll maybe try both.
What's next?
capacitiors
Hello Tibi,
because the Sanyo Oscon SP is not produced any longer I will use 270uF polymer capacitor OS-CON 16SEPC270M and by-pass it with 1nf silva mica - let´s see how it works
for by-passing the PIN potentiometer I will use 180pF styroflex capacitors, which I have here - I think this will be O.K. (you recommended 100pF as alternative to silva mica)
best regards
Christoph
Hello Tibi,
because the Sanyo Oscon SP is not produced any longer I will use 270uF polymer capacitor OS-CON 16SEPC270M and by-pass it with 1nf silva mica - let´s see how it works
for by-passing the PIN potentiometer I will use 180pF styroflex capacitors, which I have here - I think this will be O.K. (you recommended 100pF as alternative to silva mica)
best regards
Christoph
Miniregulators
Hello Tibi,
because the actual miniregulators only deliver 150mA they cannot be used for V1 and V2.
Is it possible to change the ICs to LT1763 5V fixed type to be able to use them - are they PIN compatible ?
regards
Christoph
Hello Tibi,
because the actual miniregulators only deliver 150mA they cannot be used for V1 and V2.
Is it possible to change the ICs to LT1763 5V fixed type to be able to use them - are they PIN compatible ?
regards
Christoph
V2
Hello Tibi,
I meanwhile checked the datasheet of the voltage regulator used for your miniregulators - it should be able to deliver 300mA - this should be sufficient for V2 - why should it not bei used there ?!
Regards
Christoph
Hello Tibi,
I meanwhile checked the datasheet of the voltage regulator used for your miniregulators - it should be able to deliver 300mA - this should be sufficient for V2 - why should it not bei used there ?!
Regards
Christoph
Regulator used in miniregs are Intersil LT1763-5.
They are able to deliver 500mA as long SOA is not exceeded.
In minireg case maximum allowed output current is 150mA for a 3V in/out drop-out.
Regards,
Tibi
As I explained above, miniregs are not recommended for V1 and V2 because will exceed dissipated power by chip (SoA). Beaside this, as the chip will get hotter, his output current will drop. You need a regulator that have enough headroom.
Regards,
Tibi