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Old 30th November 2012, 06:50 AM   #1
gev is offline gev  Turkey
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Default TDA7294 all in one

TDA7294, vumeter, tone control and DC rectification filter all in one single PCB (pcb program proteus ares)

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test video; TDA7294 Komple 100W Amplifikatör Vu Metre Ton Kontrol - YouTube

PCB desing: Ahmet YERLİ
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Last edited by gev; 30th November 2012 at 07:05 AM.
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Old 30th November 2012, 09:48 AM   #2
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Nice.... but, how would you mount it in a enclosure. The VU would be inside or the controls will be on bottom?
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Old 30th November 2012, 12:00 PM   #3
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Replace the LED's with one of these,

10 segment led bargraph - Google Search

and use a small length of ribbon cable or some 30Ga.WireWrap hook up wire to make an umbilical cord type of cable cable to the display.
Use standard 20pin IC socket to solder to, so that you don't risk over heating the display while you are soldering the connections.
Add then just plug the display in to the socket or you can make a little board to mount the socket on and mount it to the chassis via mounting holes in the display board.

jer

Last edited by geraldfryjr; 30th November 2012 at 12:04 PM.
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Old 30th November 2012, 12:49 PM   #4
gev is offline gev  Turkey
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thanks @geraldfryjr

alternative pc ide hdd, floppy cable or to mount horizontally leds
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Old 30th November 2012, 02:26 PM   #5
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Cool!!!!

That Works !!



jer
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Old 30th November 2012, 04:52 PM   #6
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Quote:
Originally Posted by gev View Post
thanks @geraldfryjr

alternative pc ide hdd, floppy cable or to mount horizontally leds
I love that idea - brilliant!
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Old 1st December 2012, 04:13 PM   #7
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You can reduce the built in bass blocker by changing the NFB cap from 22u to 220u and changing the bootstrap cap from 22u to 47u. If this doesn't make super low notes clear, change the 680R feedback-shunt and the 22k feedback resistor to higher values like 1.8k, 47k or even higher. If the amplifier is non-inverting, you won't have to change any other parts to do this. See the datasheet notes section for more information about bass.
With the bass blockers removed, now turning up the bass will do more than just boom--you'll have some thunder too.
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Last edited by danielwritesbac; 1st December 2012 at 04:16 PM.
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Old 6th December 2012, 12:27 PM   #8
gev is offline gev  Turkey
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thanks @danielwritesbac
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Old 7th December 2012, 12:23 AM   #9
JMFahey is offline JMFahey  Argentina
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Congratulations on your excellent design
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Old 22nd December 2012, 04:13 PM   #10
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thank you for what is given ......!!!!!
yesterday I've tried to figure this pcb but there are constraints
1. utility power and make noise on my tranformer
2. on the two resistors 2k2 5w, two 12v zener that what it means?
3. A number used kiprok
I apologize for Indonesian people who can not speak english
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