(b) A transistor constant current source is shown in Fig. 7. Analyse the circuit to find an expression for the DC current IL and show that it is independent of the load RL and the power supply Vcc. Assume the Zener is modelled by just its knee voltage Vzк (that is, rz = 0), and the transistor is modelled by VBE (that is, r = 0) and 3. R RL IL D RE Vcc Figure 7: Transistor-based constant current source. (c) Use your answer to part (b) to design a 20 mA current source, given Vcc : = 12 V and ẞ> 100. Find the values of R, RE, and VZK, together with the minimum power ratings of D and RE. Assume D requires 10 mA to maintain reverse breakdown.

b)The transistor consists of three terminals. The main reason for designing configurations is that it requires four terminals in order to provide the input and the output connections of the circuit for effective amplification. Now in your own words describe how Bipolar Transistors Transistor ( BJT ) various configurations are designed with relating diagrams. In your own estimation evalute which one is most widely used when looking at appreciable output for an amplifier?

please solve, with few steps as possible and show all formulas

4. Circuit Analysis: 5. Given: Vd1 = Vbe = 0.7V. Icq = 0 Required: The dc voltages at the bases and emitters of the transistors Q1 andQ2 and VceQ for each transistor. wwww Vcc p +24 R1 1k Q1 R2 53 0 ci C2 Rg RL 120n Q2 R3 1k

The p-channel MOSFET in the circuit below has V = 1 V and k, = 2 mA/V² (A = 0). + 5 V 9 mA (. vout Q1 10 k VS -5 v a) Is this amplifier a common-source, common-drain, or common-gate configuration? b) Determine the d.c. biasing by calculating VsG and Vsp. c) What is the amplificr's gain A and output resistance Rout?

Since the transistors used in the circuit are b=200 and r0= ∞(endless);A) By analyzing the DC for each amplifier floor separatelyre1, re2 find resistance values.B) Draw the AC equivalent circuit of the amplifier circuit.C) For each floor Zi=?, Z0 =?D) For each amplifier floor Av1, Av2 find the tension gains.E) Avl find Vl voltage value by finding voltage gain.

For the circuit shown. Sketch la vs V1 for the following values of V2 for V1 >0: V2 = 0V, V2 = 0.55V, V2=0.6V Assume that Is = 20fA, B = 100, VT = .025V (You may neglect early effect) On your graph label the models of operation that the transistor would be in and value(s) for the current when the transistor is in Forward Active. V2 la

Draw ac equivalent circuits for the following amplifiers. Each circuit should include resistancesand one dependent voltage or current source.   a) Common Drain b) Common Emitter with single emitter resistance RE c) Common Gate d) Common Source with RSAC and RSDC

Consider the following circuit with matched transistors. Assume a threshold voltage Ven = - Vtp = 1.5V. For an input voltage (V) of OV. Which statement is +2.5 V O vo 10 kN -2.5 V O A. Both transistors will be OFF O B. PMOS will cut OFF O C. NMOS will cut OFF O D. None of these

The MOSFET in the circuit below has V = 1 V, k, = 0.5 mA/V², and A= 0.04 V-1. + 5 V R. vout Q1 10 k vs -5 v a) Is this amplifier a common-source, common-drain, or common-gate configuration? b) Determine the resistance R so that the d.c. biasing has a drain current equal to 1 mA. What is VGs and Vps? Note, don't include A in the d.c. bias calculation. c) What is the amplifier's gain A, input resistance Rin, and output resistance Rout?