Lab8 - Experiment 8: Multi-stage Amplifiers 1 Objective A...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Experiment 8: Multi-stage Amplifiers 1 Objective A single transistor amplifier stage usually does not provide enough gain and/or the proper I/O impedances for the desired application. To remedy this, we can cascade several amplifier stages to form a multi-stage amplifier that has the appropriate properties. In this lab, we begin with an evaluation of the cascode amplifier before moving on to the multi-stage amplifier. Note that multi-stage amplifiers can be made from several different combinations of amplifiers; however, we only utilized the common emitter and common collector amplifier for this particular experiment. 2 Materials The items listed in table 1 will be needed. Note: Be sure to answer the questions on the report as you proceed through this lab. The report questions are labeled according to the sections in the experiment. CAUTION: FOR THIS EXPERIMENT, THE TRANSISTORS CAN BECOME EXTREMELY HOT!!! Component Quantity 2N4401 NPN BJT 4 2N4403 PNP BJT 2 51 k resistor 2 20 k resistor 1 100 resistor 2 51 resistor 1 10 k potentiometer 1 10 F capacitor 2 Table 1: Components used in this lab 3 Procedure 3.1 Cascode Amplifier 1. Construct the cascode amplifier ( Q 1 and Q 2 ) and the current mirror ( Q 3 and Q 4 ) as shown in Figure 1(a). Use two 51 k resistors in parallel to make the 25 . 5 k resistance for R REF and use a 51 resistor for R S . Also, set V BIAS 2 to 1 . 5 V. 2. Use the function generator to create v IN , a 1 kHz, 20 mV pp sine wave with a DC offset between 580 mV to 650 mV; you may have to adjust the offset to get a clean output signal....
View Full Document

Page1 / 3

Lab8 - Experiment 8: Multi-stage Amplifiers 1 Objective A...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online