The npn transistor circuit of Figure 1 has VBE = 0.5 V and Bp = 80. Determine the value of R1 that gives Ic = 4 mA and the corresponding value of VCE- Rc 4 ΚΩ R1 C B Vcc Q1 20 V E R2 5 ΚΩ RE 200 2

Q: Problem D Determine the value of Re so that collector current is 22 mA Vcc (Base current can be…

A: Transistor biasing

Q: 9 A JFET has a sPecified Pinch - off Voltage of 5 V. when Vos =0, what is Vos at the Point where the…

A: The point at which Drain current become constant is known as pinch off voltage.

Q: Ex: 7 Decide the transistor in below figure is in Saturation or not? Vce(sat)=0.2 V 3V Ra ww 10 k Rc…

A:

Q: A base current of 50 μA is applied to the transistor in Figure below, and a voltage of 5V is dropped…

A: given data :Base current IB=50μA.Voltage drop across Rc=5V.Circuit diagram is given as,

Q: Find time 't' (m sec). When the transistor enters saturation |VBE = 0.7V,VCE = 0.2V, Blarge (ON)…

A: Given Data: Required Data:We need to find time "t" when the transistor enters saturation region.

Q: For the circuit shown, what is the current ip through the Zener diode with a breakdown voltage vz =…

A:

Q: The term "Bipolar" in Bipolar Junction Transistor (BJT) refers to a) Two junctions c) Two polarity…

A: BJT- (BIPOLAR JUNCTION TRANSITION) - bjt is a solid state device current to be flow two terminals…

Q: Vcc=+12 V R₂ 1.0 MQ Ro 2.0 kQ 2N3904

A: We need to find out collector current and base voltage for given circuit.

Photoconductive Cell

Photoconductive cells are light-sensitive resistors in which resistance is inversely proportionated to light intensity when illuminated. These devices consist of a thin single-crystal or polycrystalline film of composite semiconductor materials. Cadmium sulfide (CdS) is used to make the most commercially available photoconductive particles which are sensitive to light in the visible spectrum. Other less commonly used substances respond to infrared light, but not to the visible spectrum. Such substances are lead sulfide (PbS), lead selenide (PbSe), and lead telluride (PbTe), and so on.