The design of electronic product A

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Bids
19
Avg Bid (USD)
$1954
Project Budget (USD)
$1000 - $2000

Project Description:
Design requirement for product A
Target: Output constant current through the equipment
1.Output voltage:

Additional Project Description:
10/31/2013 at 21:39 EDT
1.Output voltage: <DC12V; current:0-2A( with constant current set arbitrarily); The load varies in a wide range (0%--100%); The output precision is 0.1A.
2.Through the panel,the value of output current can be set. We can set displaying one information,such as the current、the voltage、the operating life、the external analog signal.
3.Controlling mode
A: Control the operation and work-stop for the equipment through the terminal. Meanwhile the working signal and the obstacle signal are output.
B: MODBUS communication interface: Control the operation and work-stop for the equipment through the communication interface, set output current, meanwhile reflect working condition signal, current signal, voltage signal, obstacle signal etc…
C: Provide electrical power to external sensor through the DC24V power output interface. The equipment have an analogue input interface(4-20mA), whose range can be set and display through the panel. Through the communication interface the equipment can access the data.
4.Protection and fault
The circuit has some necessary protection functions, such as short circuit、overload、overvoltage、open circuit etc. It also have automatic recovery function after lifting the alarm. Through the panel, display and fault recording associated with the alarm can be observed.
5.Parameters
Input voltage:AC220V or DC24V
Output voltage:<=DC12V
Current:0-2A
Display mode: LED or LCD

Skills required:
Circuit Design, Electrical Engineering, Electronics, Microcontroller, PCB Layout
Hire yoyochen1987
Project posted by:
yoyochen1987 China
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