#average power

[peeterjoot]

Bandwidth of some bandpass filters

[Click here for a PDF version of this post] Karl had a couple of fun filter problems that he chatted with me about. I didn’t remember how do find the bandwidth, nor the resonant frequency of such a circuit, and after he solved the problems, I tried them for myself. The circuits, as seen in fig. 1, were RC and LC respectively, and both ended up having the same transfer function. fig 1a. RC…

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[timestechnow]

Peak Power vs Average Power – How to Choose the Right Converter

Many engineers prefer to choose a power supply with ample “headroom” – In a worst-case scenario, if the application draws a power of say, 5W, then a 10W power supply will be selected. The rationale behind this is that a certain factor of safety is required for maximum reliability in addition to making sure that […]

[peeterjoot]

Average power for circuit elements

Average power for circuit elements

[Click here for a PDF of this post with nicer formatting] or [Click here for my notes compilation for this class]

In [2] section 2.2 is a comparison of field energy expressions with their circuit equivalents. It’s clearly been too long since I’ve worked with circuits, because I’d forgotten all the circuit energy expressions:

\begin{equation}\label{eqn:averagePowerCircuitElements:20} \begin{aligne…

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[peeterjoot]

Notes for ece1229 antenna theory

Notes for ece1229 antenna theory

I’ve now posted a first set of notes for the antenna theory course that I am taking this term at UofT.

Unlike most of the other classes I have taken, I am not attempting to take comprehensive notes for this class. The class is taught on slides that match the textbook so closely, there is little value to me taking notes that just replicate the text. Instead, I am annotating my copy of textbook…

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[whatmyprofsays]

Professor: So on average you are sending power half the time to generator. Why don't you charge them?

Student: Because they have better lawyers.

[peeterjoot]

Fundamental parameters of antennas

Fundamental parameters of antennas

[mathjax]

[Click here for a PDF of this post with nicer formatting]

This is my first set of notes for the UofT course ECE1229, Advanced Antenna Theory, taught by Prof. Eleftheriades, covering ch. 2 [1] content.

Unlike most of the other classes I have taken, I am not attempting to take comprehensive notes for this class. The class is taught on slides that match the textbook so closely, there is…

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[jwong2000]

Mio Link. Heart Rate Sensor. Functional Threshold (FT) Test.

Mio Link. Heart Rate Sensor

I got a MIO Link for Christmas. I love Christmas. Ho HO HOOOO!

A little retail therapy. My friends Gregg and Johnna love their MIOs, I tried one of theirs on at CompuTrainer one night and I was sold. The MIO Link is a heart rate sensor, which replaces the nasty, squeezy chest band of yesteryear.

I wore it to CompuTrainer tonight and it worked like a charm.

Opening the box, the MIO is a nice soft…

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