9 BJTs - ECE 110 M.-C. Brunet LAB 5 Transistors Current...

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ECE 110 M.-C. Brunet Bipolar Junction Transistors Handout 9 Current Amplifier LAB 5 AB 6 Transistors ogic Gates - ircuits Switch LAB 6 Logic Gates Circuits Logic circuit Motor ON or OFF LAB 7 Sensors Sensors Logic circuit 0 or 1 LAB 8 Autonomous Vehicle Motors Sensors Logic circuit M.-C. BRUNET ECE 110 UIUC 9.1 New input data as the car moves
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ECE 110 M.-C. Brunet Bipolar Junction Transistors Handout 9 Transistors and Analysis of Circuits Linear Circuits J KCL, KVL, Ohm. deal sources & resistances) (Ideal sources & resistances) Diodes: Non linear IV J Models 2 terminals 3 terminals Transistors: Non linear IV J Models Different Transistors B ipolar J unction T ransistors (BJT’s) F ield- E ffect T ransistors (FET’s) 1 2 urrent Lectures. xample Common Emitter M.-C. BRUNET ECE 110 UIUC 9.2 2 1 Current Lectures. Example : connection (CE) Later. Example : CMOS LECTURE OUTLINE or Diodes: or Transistors: For Diodes: For Transistors: 1) IV 1) Model 2) Models 2) Examples 3) Examples 3) IV (the model finally explained!) 4) More examples M.-C. BRUNET ECE 110 UIUC 9.3 )p
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ECE 110 M.-C. Brunet Bipolar Junction Transistors Handout 9 The Common Emitter (CE) Connection Circuit Rc C + - VCE = Vout + - ? + - R B B V CC ic i B + - V BE E V in cc CAN ALSO BE DRAWN: Be careful : this is NOT bt “t d d ? E Vin B i B C Vcc i c Vc-Vc but a “standard” label for a *high* voltage Vout Notice that : Vout=V CE =V C ince E is the ground) Using KVL: Vin = ? (since E is the ground) M.-C. BRUNET ECE 110 UIUC 9.4 Vout = ? B ipolar J unction T ransistors ( BJT ’s) ~ ~ 2 Diodes (pn junctions) ack to back npn BJT: 3 Terminals (B, E, C) electrons Collector Base n p back to back Emitter ase In the CE connection: n i c i B V in Vcc V out Typical Questions : V in is given hat is ut Whatisi what is i M.-C. BRUNET ECE 110 UIUC 9.5 What is V out ? What is i B , what is i C ? Is the transistor ON or OFF?
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ECE 110 M.-C. Brunet Bipolar Junction Transistors Handout 9 Transistor Behavior Brief Overview Vin i B BJT State: Vout “small” “small” “large” (cut off) I OFF (medium) (medium) (medium) active “large” “large” saturated “small” III II ON (given) i B i C = ? KVL depends on state of transistor ssume and try one state!) KVL (assume and try one state!) i c i B Vcc V out M.-C. BRUNET ECE 110 UIUC 9.6 V in npn BJTs Terminals se ( llector ( itter ( 3 Terminals : B ase ( B ), C ollector ( C ), E mitter ( E ) Symbol: B C E Basics: Currents Voltages C C B E B E CL: VL: KCL: i B +i C = i E KVL: V CB + V BE = V CE M.-C. BRUNET ECE 110 UIUC 9.7
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9 BJTs - ECE 110 M.-C. Brunet LAB 5 Transistors Current...

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