Lab 8 PNP Transistor Current Control Circuit

Vce of a low power transistor in its off state is

equal to the circuit supply voltage.

The Vce voltage drop of a low power plastic transistor in saturation is

less than one volt.

The gain of a transistor allows

All of the above (a. the transistor to multiply a small base current into a larger collector current. b. a small base current to drive a transistor into saturation. c. a small base current to control a larger collector current.)

A transistor in its non-saturated conducting state has

a forward biased base-emitter junction and a reverse biased base-collector junction.

Locate the PNP DC BIAS circuit block on the SEMICONDUCTOR DEVICES circuit board. Connect the circuit shown in Figure 8-6. Place CM switch 8 in the ON position. Based on the circuit configuration, the LED should be glowing. Measure the voltage at the cathode of DS1, with respect to circuit common. The LED does not glow because

the circuit between the source voltage and DS1 is open.