Question: Exercice#1 R R w -U D D (1) (2) (3) R R w U', -U. D U' D (4) (5) Different circuits to study Exercice#2

 Exercice#1 R R w -U D D (1) (2) (3) R
R w U', -U. D U' D (4) (5) Different circuits to
study Exercice#2 Determine if the Zener diode of Figure.1 is biased properly.

Exercice#1 R R w -U D D (1) (2) (3) R R w U', -U. D U' D (4) (5) Different circuits to study Exercice#2 Determine if the Zener diode of Figure.1 is biased properly. If so, find I. and the power dissipated by the diode. R 250022 15V+ R 3150012 V=10V Figure 1 Exercice#3 R1Limit Relimit R3Limit 12V VAVR=2V ZAVR=2V VAVR=2V Figure 3 1) A certain bright red LED drops 2 V at a maximum current of 20 mA. Determine R/LIMIT, R2Limita and R3Limit required to limit the current to 20 mA from a 12 V source? 2) What power is dissipated by each LED? Exercice#4 RC + -Vcc RE Wir B=50 V88 + Figure 3 1) Specify the type of the BJT in figure 4. 2) Calculate IB, Ic, l, Vce and VcB (indicate the laws used and specify the different steps followed to calculate RB. Do not put results without explanation). Assume that the transistor is made of silicon; VBe=0.7V; Vo=10 V; V8B=10V; Rg=40K; R=0.4K22

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