Barbarawi
Junior Member level 2
![Junior Member level 2](/styles/images/ranks/clevel2.gif)
Hi All ,,
I'm using ISIS Proteus in my Graduation Project ..
I could not find the Issue in my circuit when I use INDUCTOR with Resistance !!
my project about "How to control the DC motor by changing firing angle of the SCR thyristor"
so when I pressed to START .. the first cycle start from "90 degree" as I controlled it in my code in C "
here are the result in the picture ~
![Output.jpg Output.jpg](https://www.edaboard.com/data/attachments/25/25279-095471a2316c88ac01d878648d5feed3.jpg)
you can see from the picture the first cycle is only happened due to Inductor !! WHY ?! :shock:
the Load parameter ::
R=10 Ohm
L=31.8 mH
what would be the problem ?!
for more info.
the circuit contained four 4- Opto-coupler to give the pulse that comes from the PIC16f877A to Optocoupler to SCR thyristor
each SCR have his own opto-
I need your expert :idea:
I'm using ISIS Proteus in my Graduation Project ..
I could not find the Issue in my circuit when I use INDUCTOR with Resistance !!
my project about "How to control the DC motor by changing firing angle of the SCR thyristor"
so when I pressed to START .. the first cycle start from "90 degree" as I controlled it in my code in C "
here are the result in the picture ~
![Output.jpg Output.jpg](https://www.edaboard.com/data/attachments/25/25279-095471a2316c88ac01d878648d5feed3.jpg)
you can see from the picture the first cycle is only happened due to Inductor !! WHY ?! :shock:
the Load parameter ::
R=10 Ohm
L=31.8 mH
what would be the problem ?!
for more info.
the circuit contained four 4- Opto-coupler to give the pulse that comes from the PIC16f877A to Optocoupler to SCR thyristor
each SCR have his own opto-
I need your expert :idea: