Lab_5 - EE 101A / Winter 10 Lab #5 (For week of 2/15) Lab...

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EE 101A / Winter 10 Lab #5 (For week of 2/15) Page 1 of 4 Lab 5: Enabling Variable Output Voltage 1. Motivation: Now that we have a nice DC signal, let’s add versatility! After adding the Zener diode in the last lab, we have a DC output around 15 V. We could stop here, but our converter would only have one output voltage value, and can only provide limited current. In this lab, we’ll add a feature that will allow the user to adjust the output to anything between 0 and 15 V, and in the next lab, we’ll improve the performance even more. One of the problems with building a single voltage power supply is that it will only work for circuits that require exactly that voltage. This brings us to the issue of different power supplies for electronics. We briefly mentioned some of the constraints and reasoning behind different power supply voltages back in Lab 1, but we’ll explore this topic a bit more in this lab. The most obvious reason for different supply voltages is physical limitation of the device. We don’t want to apply 110 V to most silicon integrated circuits (ICs) because it would destroy the delicate
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This note was uploaded on 03/30/2010 for the course EE 101A taught by Professor Wong during the Winter '08 term at Stanford.

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Lab_5 - EE 101A / Winter 10 Lab #5 (For week of 2/15) Lab...

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