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Old 2nd April 2012, 12:13 AM   #91
brianco is offline brianco  Ireland
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Location: Scottish Borders - Kelso; on the famous Tweed River!
Hi Rudi!

Is the soft start board the same as for your TO-3 amp group buy? I now want to buy just one board so that I can build the TO-3 in monobloc form!

I this is the same please include me for just the one soft start board. OR if you have a spare from the TO-3 group buy I would like it.

Many thank again,

Brian.
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Old 2nd April 2012, 06:34 AM   #92
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Hi Rudi,

Add for me:

2 main boards, 2 regulator, 4 LS protect, 2 resistors, and 1 matching.

Thx.
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Old 2nd April 2012, 08:29 AM   #93
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@Brain, I have indeed a spare "Soft-Power-On" PCB. I will send you a PM.

@Anatole51: I am sorry: all of the small transistor matching PCBs have already been sold.

Best regards - Rudi_Ratlos
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Old 2nd April 2012, 07:14 PM   #94
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I received several payments today.
Thank you.

Best regards - Rudi_Ratlos
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Old 3rd April 2012, 07:56 AM   #95
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Hi Rudi,
Payment sent (164 euro)
Thanks!
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Old 3rd April 2012, 08:54 AM   #96
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I received your payments!
Vitalie, Arthur: Thank you.

Best regards - Rudi_Ratlos
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Old 3rd April 2012, 11:39 AM   #97
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Gentlemen,

I have just finished the BoMs of the PCBs of my FC-100 group-buy offer.
Have a look at post #84 where I have shown a typical configuration of the FC-100 amplifier.

I have included the BoMs of the different PCBs in form of URLs.
When you open an URL, please change the language to "English" (as shown on the attached image).


This is the BoM of the FC-100 amplifier-PCB:

https://secure.reichelt.de/index.htm...75;PROVID=2084

The BoM does not include the emitter-resistors, the MKP1839 / 1F capacitor and the NJL transistors.


This is the BoM of the integrated PSU:

https://secure.reichelt.de/index.htm...81;PROVID=2084

The two 10.000F capacitors per rail are set up in a C-R-C configuration.
The resistor (0R1/5W) is not included in the BoM.
You can use a C-L-C configuration (using a 1mH choke) as well or a combination of both: C-L/R-C.


This is the BoM of the shunt regulator:

https://secure.reichelt.de/index.htm...80;PROVID=2084

I included 2.200F capacitors / 50V, but take care, if you use 34VAC or 35VAC transformers.
You will be on the safe side using 2.200F/63V capacitors.


This is the BoM of the Speaker Protection PCB:

https://secure.reichelt.de/index.htm...57;PROVID=2084

Take care that you will use a relay with the required grid.


This is the BoM of the Soft-Power-On PCB:

https://secure.reichelt.de/index.htm...19;PROVID=2084

The BoM does not include the NTCs (I used 2 x 22R / @25 degree NTCs).
You can also use 1 (or 2) big power resistors and mount them vertically.

Regarding the used transformers:

You need 1 (or 2) 2 x 25 VAC transformers for the Backend-PSU with high wattage and 1 (or 2 ) 32 - 35VAC transformers
for the frontend (shunt regulator) with very small wattage (30W).

I will course include the BoMs in my "FC-100 Builder's Manual" which I plan to complete by the end of this week.

Best regards - Rudi_Ratlos
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Old 3rd April 2012, 12:23 PM   #98
AndrewT is offline AndrewT  Scotland
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Where can we find the schematics for the soft start and for the loudspeaker protect?
__________________
regards Andrew T.
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Old 3rd April 2012, 01:40 PM   #99
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Here are the schematics.

On the left side: Speaker Protect, on the right side: Soft Power On.

Best regards - Rudi_Ratlos
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Old 4th April 2012, 10:13 AM   #100
mseidl is offline mseidl  Germany
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I have ordered and payed as well. Just another question: When is the estimated ship date?
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