Hey everybody, i need to calculate by any method the uploaded circuit, it was made at ramdom selection of components, and i need to do all the calculations for optimal behavior and design, please help me!

 

It is hard to know which calculations you have in mind. Could you tell us something about what the device is supposed to do?

 

The Device its a Level meter and Activates an alarm and a motor , when it reches certain values, and the LCD shows constantly the level.....the things needed to be calculated are all the resistors, the Voltage source components and currents and voltages

 

All the part values are labeled, what values are you missing?

 

Since this is in the homework forum, I think Nara wants to show calculations that would be used to spec the value of each component in the schematic.
Like (Vcc-VD1)/10mA=R2 and (Vcc-VD2)/10mA=R3

Ken

 

Exactly! at least i would need to know wich Calculations must be maid to calculate every component for Optimal Operation.....in the circuit all values are labeled....but they were label Empirically.....those values weren´t calculated....

 

Most of the information for the components associated with the μP U2 can be found in the datasheet for the 18F2550.
http://ww1.microchip.com/downloads/en/DeviceDoc/39632e.pdf

Most of the information for the components associated with the voltage regulator U1 can be found in the datasheet for the LM7805
http://www.fairchildsemi.com/ds/LM/LM7805.pdf

Can't read the LCD's number, but the same goes for it's associated components.

Ken