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-rw-r--r--Electronic_Principles_/Chapter_15_New.ipynb53
1 files changed, 0 insertions, 53 deletions
diff --git a/Electronic_Principles_/Chapter_15_New.ipynb b/Electronic_Principles_/Chapter_15_New.ipynb
index 3e39f907..b47db517 100644
--- a/Electronic_Principles_/Chapter_15_New.ipynb
+++ b/Electronic_Principles_/Chapter_15_New.ipynb
@@ -27,22 +27,15 @@
"cell_type": "code",
"collapsed": false,
"input": [
- "#Example 15.1.py\n",
- "#The diode of figure 15-5 has a brekover voltage of 10 V. if Vin is increased to 15V, what is the ID?\n",
"\n",
- "#Variable declaration\n",
"VB=10 #breakover voltage(V)\n",
"Vin=15 #input voltage(V)\n",
"R=100.0 #resistance (Ohm)\n",
"\n",
- "#Calculation\n",
- "#Vin>VB so diode breaks over\n",
"I1=1000*Vin/R #diode current ideally(mA)\n",
"I2=1000*(Vin-0.7)/R #diode current with second approx.(mA)\n",
- "#To get more accurate answer, as per figure 15-3e , Voltage=0.9V when I=150mA\n",
"I3=1000*(Vin-0.9)/R #diode current more accurately(mA)\n",
"\n",
- "#Result\n",
"print 'Diode current ideally ID1 = ',I1,'mA'\n",
"print 'Diode current with second approx. ID2 = ',I2,'mA'\n",
"print 'Diode current more accurately ID3 = ',I3,'mA'"
@@ -74,19 +67,13 @@
"cell_type": "code",
"collapsed": false,
"input": [
- "#Example 15.2.py\n",
- "#The diode of figure 15-5 has Ih of 4 mA. Vin is increased to 15 V ,then decreased to open the diode. \n",
- "#What is the input voltage that opens the diode?\n",
"\n",
- "#Variable declaration\n",
"Ih=4*10**-3 #holding current(mA)\n",
"R=100.0 #resistance (Ohm)\n",
"Vs=15 #input voltage (V)\n",
"\n",
- "#Calculation\n",
"Vin=0.7+(Ih*R) #new input voltage(V)\n",
"\n",
- "#Result\n",
"print 'New input voltage Vin = ',Vin,'V'"
],
"language": "python",
@@ -114,23 +101,15 @@
"cell_type": "code",
"collapsed": false,
"input": [
- "#Example 15.3.py\n",
- "#Figure 15-6a shows a sawtooth generator. \n",
- "#when capacitor voltage reaches +10V, diode breaks over. \n",
- "#What is RC time constant for capacitor charging? \n",
- "#What is frequency of the sawtooth wave if its period is approximately 20% of time constant.\n",
"\n",
- "#Variable declaration\n",
"R=2.0*10**3 #resistance (Ohm)\n",
"C=0.02*10**-6 #capacitance (F)\n",
"VB=10 #breakdown voltage(V)\n",
"\n",
- "#Calculation\n",
"RC=R*C #Time constant(s)\n",
"T=0.2*RC #period (s)\n",
"f=T**-1 #frequency(Hz) \n",
"\n",
- "#Result\n",
"print 'time constant RC = ',RC*10**6,'us'\n",
"print 'Period T = ',T*10**6,'us'\n",
"print 'Frequency = ',f/1000,'KHz'"
@@ -162,22 +141,16 @@
"cell_type": "code",
"collapsed": false,
"input": [
- "#Example 15.4.py\n",
- "#In figure 15-14 the SCR has a trigger voltage 0.75 V and trigger current 7mA. What is Vin that turns SCR on?\n",
- "#If Ih is 6mA, what is supply voltage that turns it off?\n",
"\n",
- "#Variable declaration\n",
"It=7*10**-3 #trigger current(mA)\n",
"R1=100.0 #resistance (Ohm)\n",
"R2=1*10**3 #resistance (Ohm)\n",
"Vt=0.75 #trigger voltage (V)\n",
"Ih=6*10**-3 #holding current(mA)\n",
"\n",
- "#Calculation\n",
"Vin=Vt+(It*R2) #minimum input voltage(V)\n",
"VCC=0.7+(Ih*R1) #supply voltage for turning of SCR(V)\n",
"\n",
- "#Result\n",
"print 'Minimum input voltage Vin = ',Vin,'V'\n",
"print 'supply voltage for turning of SCR VCC = ',VCC,'V'"
],
@@ -207,10 +180,7 @@
"cell_type": "code",
"collapsed": false,
"input": [
- "#Example 15.5.py\n",
- "#What is peak output voltage? What is frequency of sawtooth wave if its period is approximately 20% of time constant?\n",
"\n",
- "#Variable declaration\n",
"IGT=200*10**-6 #trigger current(mA)\n",
"VGT=1 #trigger voltage(V) \n",
"R1=900.0 #resistance (Ohm)\n",
@@ -220,7 +190,6 @@
"Ih=6*10**-3 #holding current(mA)\n",
"R=1*10**3 #Resistance (Ohm) \n",
"\n",
- "#Calculation\n",
"RTH=R1*R2/(R1+R2) #Thevenin resistance (Ohm)\n",
"Vin=VGT+(IGT*RTH) #input voltage needed to trigger(V)\n",
"Vp=10*Vin #Output voltage at SCR firing point(V)\n",
@@ -228,7 +197,6 @@
"T=RC*0.2 #period (s)\n",
"f=1/T #frequency (Hz)\n",
"\n",
- "#Result\n",
"print 'peak output voltage Vpeak = ',Vp,'V'\n",
"print 'time constant RC = ',RC*10**6,'us'\n",
"print 'Period T = ',T*10**6,'us'\n",
@@ -262,20 +230,15 @@
"cell_type": "code",
"collapsed": false,
"input": [
- "#Example 15.6.py\n",
- "#Calculate supply voltage that turns on crowbar of figure 15-21.\n",
"\n",
- "#Variable declaration\n",
"Vz=5.6 #breakdown voltage(V)\n",
"VGT1=0.75 #trigger voltage (V) \n",
"VGT2=1.5 #worst case maximum trigger voltage(V) \n",
"Vz2=6.16 #break down voltage with 10% tolerance (V)\n",
"\n",
- "#Calculation\n",
"VCC1=Vz+VGT1 #supply voltage(V) \n",
"VCC2=VGT2+Vz2 #Over voltage (V)\n",
"\n",
- "#Result\n",
"print 'supply voltage VCC1 = ',VCC1,'V'\n",
"print 'supply over voltage VCC2 = ',VCC2,'V'"
],
@@ -305,18 +268,14 @@
"cell_type": "code",
"collapsed": false,
"input": [
- "#Example 15.7.py\n",
- "#Using figure 15-22a, find approximate firing angle & conduction angle when R=26KOhm\n",
"\n",
"import math # This will import math module\n",
"\n",
- "#Variable declaration\n",
"C=0.1*10**-6 #capacitance (F)\n",
"f=60 #frequency (Hz)\n",
"R=26*10**3 #resistance(KOhm)\n",
"Vm=120 #input ac voltage(V)\n",
"\n",
- "#Calculation\n",
"XC=(2*math.pi*f*C)**-1 #capacitive reactance(Ohm)\n",
"ZT=((R**2)+(XC**2))**0.5 #impedance (Ohm)\n",
"thetaz=math.atan2(-XC,R)*180/math.pi #angle (deg)\n",
@@ -324,7 +283,6 @@
"VC=IC*XC #voltage across C(V)\n",
"thetac=180+thetaz #conduction angle(deg)\n",
"\n",
- "#Result\n",
"print 'Capacitor reactance XC = ',round((XC/1000),2),'KOhm'\n",
"print 'impedance ZT = ',round((ZT/1000),2),'KOhm'\n",
"print 'firing angle = ',round(thetaz,2),'deg'\n",
@@ -362,19 +320,14 @@
"cell_type": "code",
"collapsed": false,
"input": [
- "#Example 15.8.py\n",
- "#If the triac has fired, what is the approximate current through 22Ohm resistor?\n",
"\n",
- "#Variable declaration\n",
"C=1*10**-6 #capacitance (F)\n",
"R1=22.0 #resistance (Ohm)\n",
"R2=82*10**3 #resistance(KOhm)\n",
"Vs=75 #input voltage(V)\n",
"\n",
- "#Calculation\n",
"I=Vs/R1 #current through 22Ohm resistor (A)\n",
"\n",
- "#Result\n",
"print 'current through 22Ohm resistor I = ',round(I,2),'A'"
],
"language": "python",
@@ -402,18 +355,12 @@
"cell_type": "code",
"collapsed": false,
"input": [
- "#Example 15.9.py\n",
- "#diac has breakover voltage of 32V. \n",
- "#If the triac has a trigger voltage of 1V and a trigger current of 10mA, what is the Vc that triggers the triac?\n",
"\n",
- "#Variable declaration\n",
"Vdb=32.0 #diac break down voltage (V)\n",
"VTT=1 #triac trigger voltage(V)\n",
"\n",
- "#Calculation\n",
"Vin=VTT+Vdb #input voltage for triggering triac\n",
"\n",
- "#Result\n",
"print 'input voltage for triggering triac vin = ',Vin,'V'"
],
"language": "python",
generated by cgit (git 2.34.1) at 2025-01-11 06:43:02 +0000