PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD

[Igor]

@ Moby: Enjoy
@Rob: 12V 2A pulse (PWM or "digital") power supply.

 

[Moby]

@ Moby: Enjoy
@Rob: 12V 2A pulse (PWM or "digital") power supply.

Can you please give some more info about PSU. Some schematics maybe  Also, top silk of the PCB's will be welcome in vectors 1:1 so we can design box and frontpannels  I know that Porusha has made fronts but I will like to make custom one and to add few more things (4 speakers selector)

 

[Moby]

Now I figured out  :-[ You are talking about computer PSU ! Something like this

[url=http://uzzors2k.googlepages.com/psu1.jpg/psu1-full.jpg]http://uzzors2k.googlepages.com/psu1.jpg/psu1-full.jpg[/url]

 

[Igor]

Hi Moby! Just check these links:
http://il.farnell.com/tracopower/tof-30-12s/psu-open-30w-12v-2-5a/dp/1242663
http://il.farnell.com/tdk-lambda/zws30-12/psu-30w-12v/dp/1184624
http://il.farnell.com/xp-power/pbm25us12/psu-open-frame-25w-12v/dp/1109866
http://il.farnell.com/xp-power/cu20-12/psu-open-pcb-20w-12v/dp/1005663
http://il.farnell.com/xp-power/ecm40us12/psu-open-frame-40w-12v/dp/1176957

http://il.farnell.com/xp-power/cu20-60-connector-kit/connector-kit-psu/dp/1005668?crosssellid=1005668&crosssell=true
http://il.farnell.com/xp-power/acs40-60-loom/loom-acs40-60-series/dp/1110689

Before ordering from Farnell, check your local electronics store.
Average cost of power supply like this should be $25-40.
Don't save bying very cheap chinese stuff.
Take into account, it connected to mains!

 

[Igor]

For measures etc, here's the drawings:
http://i251.photobucket.com/albums/gg291/diy33609/plexi_contr_FORUM.gif
http://i251.photobucket.com/albums/gg291/diy33609/REAR_CRM_1U_FORUM.gif

I suggest to buy cases from Purusha, we worked out excellent looking solution for great price.

 

[Moby]

Thanks Igor. Ok about PSU but pics with front panels are not in scale. Also, I'm not sure about screw holes on the PCB, thats why I asked silk in the vector format . Any wector can work, dwg, Ai, whatewer....I also sent you the mail with some more questions . Did you received?

 

[rob_gould]

Hey Igor,

I'm stuffing the boards for this project and need to check something with you.  Some of the supplied resistor values don't quite match the values printed on the boards.

For example I have 24k3 resistors and 24k6 spaces on the audio board.  I presume these resisitors are meant to go in that position?  Same thing with 2k62 resistors and 2k52 positions on the board.

Please can you confirm that the 'closest match' should go in each position?

What would be even better is if you have a BOM available which matches resistor value in the kit to resistor number printed on the boards.

Cheers dude

Rob

 

[Igor]

Hi Rob, I will post boms in few days. Resistor values are OK in 2% tolerance.

 

[crisotop]

Hi Igor,

is Output 7-8 of the Speaker Out Sub-D a Record Feed, i.e. is that output just 1:1 mirroring whatever input is selected at the moment, without any level control? 

thanks
christoph

 

[Igor]

is Output 7-8 of the Speaker Out Sub-D a Record Feed, i.e. is that output just 1:1 mirroring whatever input is selected at the moment, without any level control?

Yes, possible use is record or meter feed.

 

[rob_gould]

Hi Igor,

I believe that product code 85-2270 on this page

http://www.rapidonline.com/Electrical-Power/Power-Supplies/Open-DIN/Chassis-type-switch-mode-power-supplies/68073

will do the trick for a PSU won't it?

Cheers 

 

[Igor]

Hi Rob, this PS should work fine.

 

[Moby]

Igor , what kind o mic U used for talkback? Dynamic or small condenser one?

 

[Igor]

Every condencer mic which will work with Soundblaster etc will work fine.

 

[Moby]

Thanks. What you think about something like this? http://il.farnell.com/projects-unlimited/aom-6738l-r/microphone-omni-leads-9-7mm/dp/1193005

 

[crisotop]

Igor wouldyou mind having a quick look at Tats case thread - I was asking if one of your recommended psus would fit in his case?

thanks!
christoph

 

[Igor]

Microphone seems will work. Will take a look on cases thread now.

 

[Moby]

Igor, I started to stuff the boards and I miss few parts but it seems that I can find them locally. Nothing special , few resistors and diodes  But I miss RN1 & RN2 too. I suppose they are resistors networks 4k7. I think that I can find that too locally but I'm not sure what I'm looking for exactly. Also, can you describe a story with photo resistor? I miss that too, but I see on the BOM's something about it's optional. I would like to have it so please let me know what value I'm looking for and do I have to miss some other resistor in that case?

 

[Igor]

But I miss RN1 & RN2 too. I suppose they are resistors networks 4k7.

Exactly. Just install 4k7 resistors here.

Also, can you describe a story with photo resistor? I miss that too, but I see on the BOM's something about it's optional. I would like to have it so please let me know what value I'm looking for and do I have to miss some other resistor in that case?

Photoresistor used as brightness controll for 7-seg display.

No brightness controll: use 3k3 (brighter).....8k2(dim) resistor at the place of R20, ommit photoresistor and R21.
For me, optimal value is 5k6.

If you want to use brightness controll option, install R20,21 and use photoresistor-
allmost everything will work here... Roff >100k, Ron 0.3...2k.

 

[Moby]

Exactly. Just install 4k7 resistors here.

Actually you designed PCB for SIL resistor network? Am I right? I hope something like this will work (and look better  )

Photoresistor used as brightness controll for 7-seg display.

No brightness controll: use 3k3 (brighter).....8k2(dim) resistor at the place of R20, ommit photoresistor and R21.
For me, optimal value is 5k6.

If you want to use brightness controll option, install R20,21 and use photoresistor-
allmost everything will work here... Roff >100k, Ron 0.3...2k.

Clear 
Also, can you please describe function of the SW_DIP-3 on the audio board?