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with something like this...
(7.912ms/20ms) am getting a negative value....pls am i getting the right value or something is wrong somewhere
that is to say
(7.912ms/20ms) * 360
cos(142.416 * 0.0174532925) = -0.792
thanks once again in advance
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@ pic.programmer....
does...
with something like this...
(7.912ms/20ms) am getting a negative value....pls am i getting the right value or something is wrong somewhere
that is to say
(7.912ms/20ms) * 360
cos(142.416 * 0.0174532925) = -0.792
is this a right power factor and can i have a negative power factor....thanks...
pls do you mind showing a snippet of how you converted the angle to radians?...from this point below
"(1.978ms/20ms) * 360 = 35.604 degrees
cos(35.604) = 0.81306012"
thanks in advance
the memory capacity of the 8051 is very small thus meaning that your design should take another dimension in terms of microcontroller, aslo the 8051 has no in-built ADC for this task.
you have to know that you cant make use of the 8051 for real time audio processing because the flash memory of...
need help in using one of this chinese 16x32 led matrix (P10) display that i bought. i am having difficulties interface this unit because i cant seem to get or understand the protocol used to fire this board. i have searched the net for some time now but failed to get a first class result as...
also when u startup the timer via the external interrupt,you also have to disable it else the system will hang in an endless loop of the external interrupt service routine
what is the voltage rating of the relay...i mean the dc rating of the coil. and at what voltage is it being run from.
once the voltage is lower than the relays' rated voltage it will not be sufficient to energize the coil hence your circuit will fail.
you should also have it in mind that 8870's...
it all depends on the error rate that your design can accommodate....large frequency drift may introduce framing error which will certainly report false data to the system
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