Simple, no-math transformer snubber using Quasimodo test-jig

[Mark Johnson]

I'd like to buy a kit of PCB and components. Please let me know what's available. I live in Norway and I have the tools to solder SMDs.

Hi Borges, please see (post #166) in this thread.

You could also slap together a bellringer test jig on your solderless breadboard. It only takes a couple of hours. See (post #18) in this thread

You could download the Gerber files (see post #22 for the SMD Gerbers, and post #58 for the thru-hole Gerbers), send them off to your favorite PCB fab house, and get some blank boards made & sent to your home. Then you could buy electronic components from your favorite websites and distributors, then assemble one or more Quasimodos on your kitchen table. At least two diyAudio members have done this and told me of their success.

There's also Stripboard, Veroboard, and Dead Bug assembly to consider.

 

[luvdunhill]

I'd like to buy a kit of PCB and components. Please let me know what's available. I live in Norway and I have the tools to solder SMDs.

Thanks for this work!

Børge

I can help. Please shoot me a msg

 

[merlin el mago]

This BOM is OK?

https://es.rs-online.com/web/cart/partsList.html?method=displayPartsListDetails&partsListId=61512964#

IRLB8748 is the same pin config. like NTD4906N?

TIA
Felipe

 

[merlin el mago]

I downloaded the artwork files and had Seeed make me a set of the through holes boards. I have 5 spare at present. I'll do the same as offered above for anyone who would like one. PM me for details and you will need to be able to pay via Paypal. I'm in New Zealand.

PCB only: US$14 to all locations.

Just received today the board, looks great, thank you.

 

[borges]

Could you attach a pdf or screenshot of the shopping cart at RS?

Thanks,
Borge

This BOM is OK?

https://es.rs-online.com/web/cart/partsList.html?method=displayPartsListDetails&partsListId=61512964#

IRLB8748 is the same pin config. like NTD4906N?

TIA
Felipe

 

[merlin el mago]

Yes.

Compre Condensadores Cermicos Multicapa Cap ceramic 50V 0.1uF Kemet C322C104K5R5TA en RS Online y lo recibir en 24 horas.

Compre Indicadores LED T1 bi-pin red single-chip LED,24Vac/dc RS SLED24T1BPADR en RS Online y lo recibir en 24 horas.

Compre Diodos Schottky y Rectificadores Diodo Schottky, 1N5819RLG, 1A, 40V, DO-41, 2-Pines ON Semiconductor 1N5819RLG en RS Online y lo recibir en 24 horas.

Compre Transistores MOSFET Transistor MOSFET, IRLB8748PBF, N-Canal, 92A, 30V, 3-Pin, TO-220AB International Rectifier IRLB8748PBF en RS Online y lo recibir en 24 horas.

Compre Drivers de Potencia MOSFET Driver MOSFET de potencia MCP1407-E/P, No Inversin 6A PDIP, 8 pines, alimentacin 4.5 to 18V Microchip MCP1407-E/P en RS Online y lo recibir en 24 horas.

Compre Circuitos Temporizadores Temporizador CMOS LMC555CN/NOPB, 3MHz MDIP-8, 8-Pin, Texas Instruments LMC555CN/NOPB en RS Online y lo recibir en 24 horas.

 

[korben69]

Hi
I'd like to get PCBs, let me know if someone had some left.

Regards

Phil

 

[merlin el mago]

Hi
I'd like to get PCBs, let me know if someone had some left.

Regards

Phil

Helllo Phil,

Contact with gazzagazza.

Cheers

Felipe

 

[Mark Johnson]

The first item of your Bill of Materials appears to be incorrect:

Compre Condensadores Cermicos Multicapa Cap ceramic 50V 0.1uF Kemet C322C104K5R5TA en RS Online y lo recibir en 24 horas.

I didn't look at any of the others.

You will need to double-check your BOM against the Quasimodo V4 BOM. Since you also have a PCB in your possession, you can check your BOM against the board itself, for component size and pinout verification.

 

[merlin el mago]

This one is OK Compre Condensadores Cermicos Multicapa Radial Capacitor X7R 100V 100nF 0% Murata RPER72A104K3S1C07A en RS Online y lo recibir en 24 horas.?

The rest of BOM is OK?

TIA for help.

 

[merlin el mago]

Compre Condensadores Cermicos Multicapa Condensador cermico 50V 100nF AVX SR205C104KAR en RS Online y lo recibir en 24 horas.

 

[korben69]

Helllo Phil,

Contact with gazzagazza.

Cheers

Felipe

Hi Félipe 😉

Thank you, I've already mailed gazzagazza.
Regards

Phil

 

[merlin el mago]

Hi Phil,

Do you have the parts? if not I have to make a new oreder, do you want to share, please let me know by PM.

Greetings

Felipe

 

[BYRTT]

Hi Phil,

Do you have the parts? if not I have to make a new oreder, do you want to share, please let me know by PM.

Greetings

Felipe

Hi Felipe, I could be interested, you very welcome to PM.
Regards Ricky

 

[merlin el mago]

Hi Ricky YHPM
Cheers Felipe

 

[gazzagazza]

I have sold all of the spare boards I had.

Current status is

• Mark Johnson: sold out of V3 (SMD), sold out of V4 (thru-hole); no plans to sell more

• gazzagazza: has blank PCBs to sell: V4 (thru-hole)

• tjencks: thinking about organizing a Group Buy in Jan or Feb 2014; send him a PM to express your enthusiasm

Each diyAudio username above, is also a hyperlink to that person's most recent post about the Quasimodos they are making available.

 

[korben69]

Hi Phil,

Do you have the parts? if not I have to make a new oreder, do you want to share, please let me know by PM.

Greetings

Felipe

I've to place à Mouser order soon 😉
Let me know
Regards

Phil

 

[merlin el mago]

Phil YHPM

 

[borges]

I need two boads (SMD/holes won't matter). Please let me know if there is a group buy I can take part in.

If there isn't one organized, I can arrange one for PCBs only. Assuming there are available Gerbers. I use PcbCart for things like this.

Børge

 

[borges]

Hi guys,

I just placed an order on OSH Park with the very kindly provided files from post #58.

3 boards for $35 with shipping included is great! I plan to populate two of them for myself and a friend.

For your convenience I have re-attached the same zip file and added Mouser order codes to the BOM.


Thanks for your great work!

Borge