Only need help with f. 2N2222A2N3904 / MMBT3904 / PZT3904NPN General-Purpose AmplifierSmall Signal SwitchingTransistorElectrical CharacteristicsValues are at TA = 25°C unless otherwise noted.ELECTRICAL CHARACTERISTICS (TA= 25°C unless otherwise noted)SymbolParameterConditionsMin.Мах.UnitCharacteristicSymbolMinMaxUnitOFF CHARACTERISTICSOFF CHARACTERISTICSVBRCEO Collector-Emitter Breakdown Voltage Ic = 1.0 mA, Ig = 0VBRICBO Collector-Base Breakdown Voltage Ic 10 pA, lE 0le = 10 µA, le = 0VCE 30 V, VEB = 3 VVce " 30 V, Ves= 3 W40VColector-Emitter Breakdown Voltage(le 10 mAdc)VBRICEO50Vdc60VEmitter-Base Breakdown VoltageBase Cut-Off CurrentCollector Cut-Off CurrentVBREBO6.0VCollector-Base Cutoff Current(Vce= 75 Vdc)(Ven = 60 Vdc)Iceo10HAdcnAdcIBL50nA50ICEXON CHARACTERISTICS5)nAEmitter-Base Cutoff Current(VEe = 60 Vdc(Ven =4.0 Vdc)1010HAdcnAdcc = 0.1 mA VcE 1.0 Vlc= 1.0 mA, VcE 1.0 Vc= 10 mA, VCE 1.0 VIc = 50 mA, VcE = 1.0 VIç =100 mA, VCE= 1.0V40Collector-Emitter Cutoff CurrentICES50nAdc70(Vce = 50 vdc)hFEDC Current Gain100300ON CHARACTERISTICS (Note 1)DC Current Gain(le = 0.1 mAdc, Ver = 10 Vdc)de 10 mAdc. Ver= 10 Vdc(Iç = 10 mAdc, VCE = 10 Vdc)le = 150 mAdc, Vce = 10 Vdc)(le = 500 mAdc, VcE = 10 Vdc)60hFE30507510010030325Ic 10 mA, 1.0 mA02VcE(sat) Collector-Emitter Saturation VoltageVlc=50 mA, lg=5.0 mAlc = 10 mA, Ig = 1.0 mAIc 50 mA, In5.0 mA3000.30.650.85Collector-Emitter Saturation Voltage(le = 150 mAdc, la = 15 mAdc)lc = 500 mAdc, lg = 50 mAdc)VCEsat)VdcVeglsat) Base-Emitter Saturation VoltageV0.950.31.0SMALL SIGNAL CHARACTERISTICSBase-Emitter Saturation Voltage(lc = 150 mAdc, la= 15 mAdc)(Iç = 500 mAdc, lg = 50 mAdc)Vdclc = 10 mA, VcE = 20 Vf= 100 MHzVcB = 5.0 V, le" 0,f= 100 kHzVER = 0.5 V, le = 0,f= 100 kHzlc = 100 HA. VeE =5.0 V.Rs = 1.0 ks2f= 10 Hz to 15.7 kHz0.61.220Current Gain - Bandwidth ProductfT300MHzSMALL- SIGNAL CHARACTERISTICSMagnitude of Smal-Signal Current Gain(lc= 20 mAdc, Vce 20 Vdc, f= 100 MHz)Small-Signal Current Gain(lc = 1.0 mAdc, VCE = 10 Vdc, f= 1 KHZ)CoboOutput Capacitance4.0pF2.5CboInput Capacitance8.0pFhe50NFNoise Figure5.0dBInput Capacitance(VEB = 0.5 Vdc, lç = 0, 100 KHz Sts 1.0 MHz)Outout Capacitance(Vce = 10 Vdc, lg =0,100 KHZ s fs 1.0 MHZ)CoopF25SWITCHING CHARACTERISTICSDelay TimeRise TimeStorage TimeFall TimeCobopF8.0Vcc = 3.0 V. VBe-0.5 VIç = 10 mA, l81 =1.0 mA35nsSWITCHING (SATURATED) CHARACTERISTICS35nsTurn-On Time(Reference Figure in MIL-PRF-19500/255)on35nsVcc = 3.0 V. lc 10 mA.B1= le2 1.0 mA200ns50nsTurn-Off Time(Reference Figure in MIL-PRF-19500/255)300nsSS8050NPN Epitaxial Silicon TransistorElectrical CharacteristicsValues are at TA = 25°C unless otherwise noted.SymbolConditionsParameterMin.Тур.Мах.Unitc= 100 HA, lg= 0Collector-Emitter Breakdown Voltagec=2 mA, Ig= 0= 100 µA, Ic = 0Collector-Base Breakdown VoltageBVCBOBVCEO40V25VBVEBOEmitter-Base Breakdown Voltage6VIcaoCollector Cut-Of CurrentVca = 35 V, lg = 0100nAVes = 6 V. le =0VCE= 1 V, lç = 5 mAVCE1 V, lc= 100 mAVCE = 1 V, le = 800 mAlc = 800 mA, Ig = 80 mAEmitter Cut-Off Current100nA45DC Current Gain8530040VcE(sat)Collector-Emiter Saturation Voltage0.5VVeE(sat) Base-Emitter Saturation Voltagec= 800 mA, Ig = 80 mA1.2VVeelon)Base-Emitter On VoltageVce1 V, le= 10 mA1.CobOutput CapacitanceVce = 10 V, le = 0,9.0pFf= 1 MHzCurrent Gain Bandwidth ProductVcE = 10 V, le= 50 mA100MHz 3.An electrical fan is used to cool electrical components when the temperature exceeds a certain limit. The fan iscontrolled by a microcontroller that sends a logical-1 (3.3V) to an interface circuit that in turn activates the motor. Whenthe temperature falls below the upper limit, the microcontroller sends a logical-0 (0.0V) to the interface circuit and themotor turns off.You are to design a simple transistor switch controller circuit for this application and decide to use the design shownFan motor drawsV224W when running"GND-24VD2IN40010Pu2"DO"asNPN TransistorIbbelow. You have the following npn transistors available to you: 2N2222A, SS8050, and 2N3904.a. If the fan draws 24W when running, what is the collector current, Ic?b. What would the maximum Vce voltage be across the transistor when the it is in cut-off?c. Based on the design criteria and the manufacturer's specifications for the 3 transistors, which one would work for thisapplication? Why?d. For the transistor you selected, determine the minimum gain (B) for this transistor from the manufacturer's datasheet.e. What is the minimum base current, Is, that would be needed to turn the motor on fully?f. Calculate a suitable value of Rg such that the transistor is in saturation when the microcontroller outputs a logical-1(3.3V).g. What is the purpose of the 1N4001GP? How is it used?

As, we calculated before, IC=1.01 Ampas we know the ratio of IC to IB=26ICIB=261.01IB=26IB=0.39 Amp

3. An electrical fan is used to cool electrical components when the temperature exceeds a certain limit. The fan is controlled by a microcontroller that sends a logical-1 (3.3V) to an interface circuit that in tum activates the motor. When the temperature falls below the upper limit, the microcontroller sends a logical-0 (0.0V) to the interface circuit and the motor turns off. You are to design a simple transistor switch controller circuit for this application and decide to use the design shown Fan motor draws 24W when running "GND D2 IN4001OP u2 "DO as NPN Transistor

3. An electrical fan is used to cool electrical components when the temperature exceeds a certain limit. The fan is controlled by a microcontroller that sends a logical-1 (3.3V) to an interface circuit that in tum activates the motor. When the temperature falls below the upper limit, the microcontroller sends a logical-0 (0.0V) to the interface circuit and the motor turns off. You are to design a simple transistor switch controller circuit for this application and decide to use the design shown Fan motor draws 24W when running "GND D2 IN4001OP u2 "DO as NPN Transistor

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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