we need to have only one circuit bortd with the follow multifunction :
A) DC/DC converter
B) Touch screen controller
C) Audio amplifier
we already have the 3 circuit on 3 boards, need to redesign on one board .
A) input 12V +/- 4 V
output ATX 30 W
output 19 V
Output 5 V ( 10 W )
output 12 V ( 30 W ) for internal connection with audio amplifier
B) touch controller RS232 or USB connection for command a openframe display
C) audio amplifier based on IC Yamaha YDA138
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We can supply YDA138 ...
This device need to have a good audio so it's very important to make a good design for power circuit without noise on audio , also it's important this device will be not too worm when in use .
YDA 138 works with 12 V - 30 W
Look YDA138 need to be made with SMD board .
we need 1 sample for test , then need o have 20-50 pz. for each mounth
17 freelancers are bidding on average $648 for this job
30 years of experience in the development of all types of products in an audio and video hardware software prototype development in 1 week experencia in amplifiers and converters dc / dc High Power
We do the schmatics design for the three projects Then the PCB layout Asseble the PCB and give the tested ones. Can you check the PM for detailed project proposal. Regards Somasundaram.I