Paradise Builders

[studeb]

I am working on a BOM for this, and have a few questions.
For the LEDs, what forward drop? I see Hesener used green ones, so 1.7V?
If so is this okay: 351-3242-RC Xicon | Mouser
For the 12V zener, is this mouser part okay: 771-BZX79-B12133

I will share the project when it is done, in case there are others with boards but no parts.

For the RIAA caps, it seems FKP and not MKP are the way people are going?
Also for those that have sorted succesfully, what make are you 337/327s?

thanks

 

[Joachim Gerhard]

I use Wima FKP2 and Rifa SMD PPS, also LCR extended foil Polystyrol. I use 327, 337 from Diotec and Fairchild.
The Diotecs seem to be better matched between NPN and PNP.

 

[pdul]

Those leds and zeners are just perfect.

 

[Joachim Gerhard]

Here are the Polystyrols.Bestellen Sie Polystyren Folienkondensator Folienkondensator radial 63Vdc 470pF RS EXFS/HR 470PF 1% 63V online mit versandkostenfreier Lieferung bei RS Components.

 

[Joachim Gerhard]

Rifa SMD PPS.https://www.distrelec.de/ishopWebFront/search/luceneSearch.do

 

[Joachim Gerhard]

I hope this link works better :https://www.distrelec.de/folienkond...30-vac/evox-rifa/smc5-7-223j50j31-tr12/828197

 

[Joachim Gerhard]

Here are the Wimas :FKP-2 1,0N - Wima Folien-Kondensator, Rm 5mm 1,0nF bei reichelt elektronik

 

[Joachim Gerhard]

I think the Zeners are ok. You choose super bright Leds. The voltgae is ok but Frans lets them work on very low current so they may not light up. I use low current ( 2mA ) green Leds, diffuse. Clear will worlk too i think but is has to be a low current Led.

 

[Joachim Gerhard]

I use this ones :Leuchtdioden LEDs Kingbright - hifituning24.de

 

[pdul]

I use normal green 3mm diffuse leds, and they work perfect

 

[Joachim Gerhard]

Leds have a wide range of current they work with. It is really hard not to enlighten them.

 

[studeb]

Okay then this: WP710A10LGD Kingbright | Mouser

2mA, green, diffuse and from Kingbright

 

[FdW]

Okay then this: WP710A10LGD Kingbright | Mouser

2mA, green, diffuse and from Kingbright

Good choice

 

[FdW]

The LED's in the PSU operate at 886uA, the WP710A10LGD has a voltage drop of (about) 1.86V at 886uA (estimated from the graph in the datasheet). This is giving a reference voltage of 9 * 1.86V = 16.74V. The trimmer is 2K and needed (to adjust for 18Vdc) is 18V - 16.74V = 1.26V, 1.26V - 600mV(Vbe of the transistor that 'reads' the reference) = 620mV, 620mV / 886u = 699 Ohm (or there about ). So this should work nicely.

 

[studeb]

 

[studeb]

For your perusal.
I still have to check pin spacing when applicable.

 

[Joachim Gerhard]

Thanks, this is very helpful. On first scan it looks ok.

 

[studeb]

here is an improved version, with spacing for the elect caps. Alternate part numbers for Nichicon KT/KA and Elna Silmic II are included as well. I think that everything is included except for CMF/RN55 resistors.

I do not think its a problem to bend the leads, and its hard to find 5mm spacing for the small caps in stock at Mouser (i am lazy and trying for one stop shopping )

 

[Joachim Gerhard]

Any volunteer to check this ? I am out of time. I am leaving for Krefeld over the weekend.
There is the AAA analog show. The Paradise is playing in Andrejs system. Also in the Fast Audio room the "Tanzmusik" Phono with tone control i designed with Sigurd Ruschkowski and Ward Maas. I also show a subwoofer for the Kiso speakers from Japan. My new JG1 preamp is playing in Wolf von Langas system and i just finished my entry level preamp. Its called " Das unbeschriebene Blatt ". I do not know how to translate this into english. It has MM,MC, Line inputs, Line Out, Phono Direct, Line high pass filtered and a Headphone Out. i will have lots to do and explain.

 

[studeb]

The blank page ?

Dont worry about the BOM, i was only concerned about the zeners and something else that escapes me now.
They have been verified.