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Audio output converter

$30-250 AUD

In Progress
Posted almost 8 years ago

$30-250 AUD

Paid on delivery
Requirements: 1. Connect the engineered device to the mobile phone's jack output 2. The device has to have an analog button to amplify the signal (like the volume button on a radio) 3. Another button / switch to change the sinus sound waves to square waves. (on or off) 4. Change the voltage to 300V The power source of the device is a small battery (AA or 9V). The output is also a jack socket (mono).
Project ID: 10659271

About the project

6 proposals
Remote project
Active 8 yrs ago

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Your circuit will be: - Have 02 phone jacks, one for input and one for output - Input will be fetched to two circuits amplifier circuit with amplifying gain is set by a potentiometer - Output of amplifier is fetched to: + A comparator to convert sine wave to square wave + A analog multiplexer - An analog multiplexer which controlled by a switch to select sine or square wave - A power amplifier (low power) to driver transformer - A transformer convert smal signal to 300V What you receive: - A video demonstrate how circuit work in project board - Schematic and PCB layout of the circuit - 02 working prototypes If you want another thing, can we discuss to fit.
$177 AUD in 10 days
0.0 (0 reviews)
0.0
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6 freelancers are bidding on average $126 AUD for this job
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Hi! Im an electrical and electronic masters student studying in UWE. I have the experience of coding in C/C++/Assembly/Arduino/PIC C/MikroC/MATLAB for more than three years. I also have the knowledge and experience of ELECTRICAL AND ELECTRONICS circuit analysis and design. I also have experience in embedded systems using microcontrollers like PIC, ATMEL, ARDUINO and most of the other types. I have made different kinds of devices varying from radios to drones and more. I am very keen to work on implementation projects I also have studied Artificial intelligence. Im very thorough with subjects like Neural networks, Fuzzy systems, Genetic algorithms and Expert Systems. I have done BCS (British computer society) diploma level. I have the knowledge on PHP/HTML5/mySQL for website development. I have completed many freelancer assignments successfully. If you are interested in hiring me, please send me a message. I have made a lot of reports in the recent past. I have good experience in using Microsoft office softwares like Word, Excel and Powerpoint. I can write reports of any length without mistakes. Thank you!
$55 AUD in 3 days
4.6 (8 reviews)
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Hello, I understand that you are willing to amplify the headphone signal of the mobile phone to make it bigger. However, what is your aim for 300V? These voltages can be lethal and it is not an easy task to create such voltages with only a small battery and a weak signal source. Also, giving 300V to a mono jack socket is also not a good idea. These connectors are rated at about 50V maximum.
$169 AUD in 6 days
5.0 (1 review)
0.0
0.0
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I am working at a software house. I am professional in it. I'll provide satisfactory work according to your desire.
$100 AUD in 2 days
0.0 (0 reviews)
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About the client

Flag of AUSTRALIA
Hornsby, Australia
5.0
2
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Member since Jul 18, 2015

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