lab1_bjt_procedure

lab1_bjt_procedure - ECE 327 Electronic Devices and...

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 Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ECE 327: Electronic Devices and Circuits Laboratory I Procedure Notes for Lab 1 (Bipolar (Junction) Transistor Lab) Abstract The laboratory procedure is broadly outlined in the lab book . You are expected to gather all data and answer all questions required by that text. Here, some additional details are presented that should help you build and troubleshoot your circuits. Another supplementary handout will give schematics and explanatory information about the circuits. Contents 1 Common-Emitter Amplifier (“Level-Shifter Amplifier”) 1 Troubleshooting the Common-Emitter Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 pnp Current Source (“Common-Base” (Power) Amplifier) 3 Example Data Plots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 Followers 4 Emitter Follower (“Common-Collector” (Power) Amplifier) . . . . . . . . . . . . . . . . . . . . . . 4 Simple Push–Pull Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Biased Push–Pull Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1 Common-Emitter Amplifier (“Level-Shifter Amplifier”) Building and testing of this circuit will take the majority of this laboratory’s time. Do not be discouraged if things move slowly through this circuit. The remaining four parts of the lab move quickly. If you have trouble, consult the troubleshooting section below on page 2 . • Input: 0 . 5 V amplitude (1 V pp ) and 0 offset – On older generators, press AMPL − 20 dB button to get Amplitude knob to reach 0 . 5 V – Use 1 kHz frequency during testing • Output: 6 V pp and 5 V offset (i.e., circuit gain of 6 with 5 V offset shift ) • Pick R C ≪ 300 kΩ so that the scope and probe do not load the high-impedance output. Otherwise, your output may look severely attenuated (especially at 15 kHz due to capacitive loading). • Pick R 1 and R 2 as large as possible while maintaining R 1 bardbl R 2 ≪ βR E with β ≈ 100 • Plot collector waveforms with 2 V / div and others with 1 V / div . Align grounds on a low grid line. • For 100 Hz , 1 kHz , and 15 kHz inputs, – Use Quick Meas to show input Peak-to-Peak , output Peak-to-Peak , and output Average – Save input and collector (i.e., output) together on same screen . Find gain and offset....
View Full Document

{[ snackBarMessage ]}

Page1 / 4

lab1_bjt_procedure - ECE 327 Electronic Devices and...

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