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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /281/CH12/EX12.4/example12_4.sce | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
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Diffstat (limited to '281/CH12/EX12.4/example12_4.sce')
| -rwxr-xr-x | 281/CH12/EX12.4/example12_4.sce | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/281/CH12/EX12.4/example12_4.sce b/281/CH12/EX12.4/example12_4.sce new file mode 100755 index 000000000..543aa0a08 --- /dev/null +++ b/281/CH12/EX12.4/example12_4.sce @@ -0,0 +1,93 @@ +disp('chapter 12 ex12.4')
+disp('given')
+disp("output =10V to 15V")
+Vomax=15
+disp("max load current=4000mA")
+Il=.4
+disp("Vsmin=Vomax+3 V")
+Vsmin=Vomax+3
+disp('volts',Vsmin)
+disp("allowing Vrs=3V(p to p)")
+Vrs=3
+disp("Vs=Vsmin+Vrs/2")
+Vs=Vsmin+Vrs/2
+disp('volts',Vs)
+disp("ZENER CIRCUIT")
+disp("let Vz=Vo/2")
+Vz=Vomax/2
+disp('volts',Vz)
+disp("Iz=20mA")
+Iz=.02
+disp("R1=(Vo-Vz)/Iz")
+R1=(Vomax-Vz)/Iz
+disp('ohms',R1)
+disp("R1=330 ohm std value")
+R1=390
+disp("POTENTIAL DIVIDER")
+disp("let I2>>Ibmax I2=50uA Vomin=10")
+I2=50*10^(-6)
+Vomin=10
+disp("R2=(Vomin-Vz)/I2")
+Vz=7.5
+R2=(Vomin-Vz)/I2
+disp('ohms',R2)
+disp("R2=47kohm std value")
+R2=47000
+disp("I2=(Vomin-Vz)/R2")
+I2=(Vomin-Vz)/R2
+disp('amperes',I2)
+disp("R34=R3+R4=Vz/Iz")
+R34=Vz/I2
+disp('ohms',R34)
+disp("when Vo is at its max,moving contact is at bottom of R4")
+disp("I2=Vomax/(R2+R34)")
+I2=Vomax/(R2+R34)
+disp('amperes',I2)
+disp("R3=Vz/Iz")
+R3=Vz/I2
+disp('ohms',R3)
+disp("use 100 k ohm std value")
+R3=100000
+disp("R4=(R3+R4)-R3")
+R4=R34-R3
+disp('ohms',R4)
+disp("use 50 k ohm std value")
+disp("CAPACITOR")
+disp("select C1=100uF")
+C1=100*10^(-6)
+disp("Q1 specification")
+disp("Vcemax=Vsmax=Vs+Vrs/2")
+Vcemax=Vs+Vrs/2
+disp('volts',Vcemax)
+Ie=Il
+disp("P=Vce*Il=(Vs-Vomin)*Il")
+P=(Vs-Vomin)*Il
+disp('watts',P)
+disp("A 2N3055 is a suitable device")
+disp("Q2 specification")
+disp("Vcemax=Vsmax=Vs+Vrs/2")
+Vcemax=Vs+Vrs/2
+disp('volts',Vcemax)
+disp("Ie=Il/hFE1 ,hFE1=20 for Q1")
+hFE1=20
+Ie=Il/hFE1
+disp('amperes',Ie)
+disp("P=Vce*Il=(Vs-Vomin)*Il")
+P=(Vs-Vomin)*Il
+disp('watts',P)
+disp("A 2N3904 is a suitable device")
+disp("R5 Calculation")
+disp("let Ie2min=0.5mA,Vbe1=0.7")
+Ie2min=0.5*10^(-3)
+Vbe1=0.7
+disp("R5=(Vomin+Vbe1)/Ie2min")
+R5=(Vomin+Vbe1)/Ie2min
+disp('ohms',R5)
+disp("R5=18kohm std value")
+disp("OPERATIONAL AMPLIFIER")
+disp("because I2 is sselected for bipolar opamp either a bipolar or BIFEt opamp can be used")
+disp("supply voltage Vs=19.5V")
+Vs=19.5
+disp("Input supply voltage range=Vs/2-Vz")
+ipvoltage==(Vs/2)-Vz
+disp('volts',ipvoltage)
\ No newline at end of file |