The Design of Digital Direct Current Source Based on Nios II
2013 ◽
Vol 313-314
◽
pp. 316-319
Keyword(s):
Nios Ii
◽
In this paper, a digital direct current source based on Nios II is studied. The system adopts FPGA as hard core and the main circuit of constant current source consisting of operational amplifier LM358 and power Field Effect Transistor (FET) IRF530. In addition, 12 bit D/A chip MAX531 and 12 bit A/D chip TLC549 are used to monitor the output current. The system outputs current from 20mA to 2000mA with 0.5mA step level, the set current value and actual output current value can be displayed by LCD. Result shows that the system has characteristics of high precision, good stability, small size and high integration.
Keyword(s):
2013 ◽
Vol 340
◽
pp. 933-936
2011 ◽
Vol 121-126
◽
pp. 2293-2298
2014 ◽
Vol 926-930
◽
pp. 1226-1229
Keyword(s):
1956 ◽
Vol 27
(3)
◽
pp. 157-161
◽
2011 ◽
Vol 82
(1)
◽
pp. 013906
◽
Keyword(s):