DIY Buchla low noise power supply boards are in stock! just FYI

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toppobrillo
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DIY Buchla low noise power supply boards are in stock! just FYI

Post by toppobrillo »

Image
Image

the Mini-Bus is a compact, expandable and low noise power solution for Buchla systems.
  • +/- 15V @ 1A; +5V @ up to 1A; +12V
    Supports 200e preset bus
    Noisy / Quiet ground-scheme implemented as per Buchla's 200e cases
    Low Noise: <5mVpp (2mV RMS) r/n @ 75% load
    Can be used passive or active. Extendable to 8 connects with Bus Xtnder kit
    Easy to source standard footprint DC/DC converter available from several manufacturers
    Accepts Molex or Faston blade style headers
    2oz copper , lead-free w matte-black mask
    Measures ~165mm x 76mm
    Fits existing hole pattern from various case makers
    Requires external 12V AC/DC brick
    Free USPS shipping (CONUS)
order link: https://toppobrillo.com/collections/diy

Cheers thanks for looking! JOsh
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meatcliff
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Re: DIY Buchla low noise power supply boards are in stock! just FYI

Post by meatcliff »

Nice! At $99 assembled this is a great deal and a no brainer for someone that needs a compact PSU.
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Re: DIY Buchla low noise power supply boards are in stock! just FYI

Post by toppobrillo »

yee! thanks for looking. I have a limited supply of assembled ones.. yes it is a good deal. BOM is around 50$..
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Re: DIY Buchla low noise power supply boards are in stock! just FYI

Post by toppobrillo »

someone brought to my attention INTL shipping rates on my website, I did not have "first class package intl" setup, it is now, a PCB shipping from the US to UK is ~15$ , for example, with this option. cheers, Josh
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Re: DIY Buchla low noise power supply boards are in stock! just FYI

Post by tele_player »

Limited supply of assembled ones - after that, board only?

Wouldn’t the Bus Xtender bring the total to 7? (5-1)+(4-1)=7
And are the edge connectors blue?
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Re: DIY Buchla low noise power supply boards are in stock! just FYI

Post by toppobrillo »

tele_player wrote: Sun Jul 26, 2020 2:16 pm Limited supply of assembled ones - after that, board only?

Wouldn’t the Bus Xtender bring the total to 7? (5-1)+(4-1)=7
And are the edge connectors blue?
Yep, PCB only, unless there is demand for more assembled ones.. well, if you hardwire an EDAC connector to the main board via the pads to connect the xtender, you end up with 8. The idea was you might want to power 2x 6U boats with this supply, and a nice tidy solution is to solder the EDAC and use the end edge connector as shown in the pic, giving you 6 available connects per boat when you connect the active/passive board together like they are in the Buchla cases, with an EDAC to EDAC cable. the edge connects are silver colored, the scan I made of the board didn't show this too well.
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Re: DIY Buchla low noise power supply boards are in stock! just FYI

Post by toppobrillo »

Dave Brown has a build page up on his site now: https://modularsynthesis.com/toppobrillo/mini-bus.htm btw
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Re: DIY Buchla low noise power supply boards are in stock! just FYI

Post by tele_player »

Ordered one this morning, assembled. I’ll probably order more.
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Re: DIY Buchla low noise power supply boards are in stock! just FYI

Post by toppobrillo »

tele_player wrote: Sun Jul 26, 2020 6:58 pm Ordered one this morning, assembled. I’ll probably order more.
right on! just ordered more DC converters, will ship your board on thursday with the Faston blade / crimp connectors incuded (not soldered on so you have options for installation) . cheers, Josh
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Re: DIY Buchla low noise power supply boards are in stock! just FYI

Post by tele_player »

Board arrived today, looks great. I should have ordered barrel jack,too!
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Re: DIY Buchla low noise power supply boards are in stock! just FYI

Post by Minimoog56 »

Thanks TOPO - mine arrived - nice job.
Beatniks and Bongos/Bagels and Bongos/Buchlas and Bongos...

de gustibus....
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Re: DIY Buchla low noise power supply boards are in stock! just FYI

Post by ArguZ »

Blue or gold ?
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Re: DIY Buchla low noise power supply boards are in stock! just FYI

Post by Minimoog56 »

Dark indigo.
Beatniks and Bongos/Bagels and Bongos/Buchlas and Bongos...

de gustibus....
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Re: DIY Buchla low noise power supply boards are in stock! just FYI

Post by toppobrillo »

Minimoog56 wrote: Wed Aug 05, 2020 10:25 pm Thanks TOPO - mine arrived - nice job.
cool! thanks. BTW y'all who are using this with 200e stuff especially, and want to maintain the integrity of Buchla's quiet/noisy ground scheme, chassis ground should be *quiet* ground, therefore, if you are mounting your DC barrel jack in a conductive enclosure, it must be insulated from it if it has a conductive sleeve.

The ones I stock are a super snug fit, they are my favorite, but they are conductive. I will ship these with these custom PLA plugs I designed and printed. cheers
Screen Shot 2020-08-09 at 9.57.43 PM.png
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Re: DIY Buchla low noise power supply boards are in stock! just FYI

Post by toppobrillo »

bump! we have more in stock:

hey ,just a reminder that you can grab a very clean little busboard / bus extender kit here. #diy low noise power supply for your #buchla 200 / 200e/ easel #synthesizer

https://toppobrillo.com/collections/diy ... ni-bus-pcb
https://toppobrillo.com/collections/diy ... -bus-xtndr

cheers yall! looking forward to a much brighter 2021..
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