Electrical engineering
Learn about electricity, circuit theory, and introductory electronics. We also have sections that let you get down and dirty with household items, from building your own robot to videos where we disassemble household items to see what's inside.
9 units199 videos20 hours
Learn it live with a class on Puzzicle · Teachers: use it with your class
Unit 1: Introduction to electrical engineering
Unit 2: Circuit analysis
Circuit elements
Resistor circuits
Series resistors ✓ Check-ins11:57
Parallel resistors (derivation) ✓ Check-ins11:08
Parallel resistors (derivation continued) ✓ Check-ins4:15
Parallel resistors ✓ Check-ins9:21
Simplifying resistor networks ✓ Check-ins8:06
Voltage divider ✓ Check-ins6:39
Analyzing a resistor circuit with two batteries ✓ Check-ins9:44
DC circuit analysis
Kirchhoff's current law ✓ Check-ins6:03
Kirchhoff's voltage law ✓ Check-ins6:50
Labeling voltages ✓ Check-ins11:07
Application of the fundamental laws (setup) ✓ Check-ins8:02
Application of the fundamental laws (solve) ✓ Check-ins8:40
Node voltage method (steps 1 to 4) ✓ Check-ins9:57
Node voltage method (step 5) ✓ Check-ins6:25
Mesh current method (steps 1 to 3) ✓ Check-ins9:16
Mesh current method (step 4) ✓ Check-ins12:12
Natural and forced response
Capacitor i-v equations ✓ Check-ins8:41
A capacitor integrates current ✓ Check-ins9:21
Inductor equations ✓ Check-ins12:47
Inductor kickback (1 of 2) ✓ Check-ins12:49
Inductor kickback (2 of 2) ✓ Check-ins7:26
RC natural response - intuition ✓ Check-ins7:26
RC natural response - derivation ✓ Check-ins10:59
RC natural response - example ✓ Check-ins2:53
RC step response - intuition ✓ Check-ins10:09
RC step response setup (1 of 3) ✓ Check-ins9:08
RC step response solve (2 of 3) ✓ Check-ins9:27
RC step response example (3 of 3) ✓ Check-ins3:40
Sketching exponentials ✓ Check-ins7:50
Sketching exponentials - examples ✓ Check-ins7:21
LC natural response intuition 1 ✓ Check-ins5:13
LC natural response intuition 2 ✓ Check-ins9:33
LC natural response derivation 1 ✓ Check-ins6:39
LC natural response derivation 2 ✓ Check-ins9:30
LC natural response derivation 3 ✓ Check-ins7:11
LC natural response derivation 4 ✓ Check-ins7:32
LC natural response example ✓ Check-ins7:24
AC circuit analysis
AC analysis intro 1 ✓ Check-ins6:43
AC analysis intro 2 ✓ Check-ins8:58
Trigonometry review ✓ Check-ins7:30
Sine and cosine come from circles ✓ Check-ins4:40
Sine of time ✓ Check-ins10:38
Sine and cosine from rotating vector ✓ Check-ins3:57
Lead Lag ✓ Check-ins7:26
Complex numbers ✓ Check-ins8:36
Multiplying by j is rotation ✓ Check-ins6:13
Complex rotation ✓ Check-ins6:20
Euler's formula ✓ Check-ins8:42
Complex exponential magnitude ✓ Check-ins6:10
Complex exponentials spin ✓ Check-ins6:40
Euler's sine wave3:23
Euler's cosine wave3:04
Negative frequency ✓ Check-ins6:41
AC analysis superposition ✓ Check-ins7:19
Impedance ✓ Check-ins11:41
Impedance vs frequency ✓ Check-ins8:56
ELI the ICE man ✓ Check-ins10:29
Impedance of simple networks11:43
KVL in the frequency domain12:51
Unit 3: Amplifiers
Unit 4: Semiconductor devices
Unit 5: Electrostatics
Unit 6: Signals and systems
Fourier series
Fourier Series introduction5:13
Integral of sin(mt) and cos(mt) ✓ Check-ins6:25
Integral of sine times cosine ✓ Check-ins4:27
Integral of product of sines ✓ Check-ins8:15
Integral of product of cosines ✓ Check-ins7:15
First term in a Fourier series ✓ Check-ins6:49
Fourier coefficients for cosine terms ✓ Check-ins6:08
Fourier coefficients for sine terms ✓ Check-ins6:33
Finding Fourier coefficients for square wave ✓ Check-ins10:40
Visualizing the Fourier expansion of a square wave ✓ Check-ins3:30
Unit 7: Home-made robots
All about Spout
3rd graders build robots at Santa Rita Elementary School ✓ Check-ins4:06
SPDT switch ✓ Check-ins2:48
Spout's sliding SPDT switch ✓ Check-ins4:41
Spout lights0:32
Spout motor ✓ Check-ins3:19
Spout battery configuration and polarization ✓ Check-ins1:50
Spout's reversing circuit and final assembly ✓ Check-ins3:00
Spout Bot with Solder
Spout Bot without Solder
Tools and parts to build a Spout ✓ Check-ins1:18
Connect the SPDT switches ✓ Check-ins0:57
Attach the LED eyes ✓ Check-ins8:56
Wire the SPDT switches ✓ Check-ins6:16
Create the motor mounts ✓ Check-ins6:18
Secure and wire the motors ✓ Check-ins4:02
Install on/off switches ✓ Check-ins8:33
Connect the LEDs to an on/off switch ✓ Check-ins4:35
Attach Spout's antennae ✓ Check-ins1:55
Add Spout's tail ✓ Check-ins2:11
Give Spout some grippy feet ✓ Check-ins1:14
Spider Bot
6th graders learn to build a Spider robot ✓ Check-ins11:39
Fun with Spider Bot0:28
Spider parts and tools ✓ Check-ins2:13
Spider's click n' stick ✓ Check-ins3:42
Battery and motor mounts for Spider ✓ Check-ins6:28
Click n' stick base & batteries ✓ Check-ins2:30
Spider's motor controller ✓ Check-ins3:28
Spider's power switch ✓ Check-ins6:14
Spider's bezel ✓ Check-ins1:13
Spider's wheels ✓ Check-ins2:49
Spider's Arduino Nano ✓ Check-ins5:40
Motor controller connections ✓ Check-ins2:05
Spider's LED eyes ✓ Check-ins6:03
Spider's stabilizer bar ✓ Check-ins1:18
Spider's romance0:44
Ben Eater's Spider ✓ Check-ins3:15
Bit-zee Bot
Bit-zeeeeeeeeeee1:11
Bit-zeeeeeeeeeee (long version) ✓ Check-ins2:22
Introduction ✓ Check-ins3:39
Planning and propulsion ✓ Check-ins8:23
Parts ✓ Check-ins3:46
Chassis/frame ✓ Check-ins6:39
Wheel mounts and fenders ✓ Check-ins10:02
Component mounting holes ✓ Check-ins5:31
Batteries/power ✓ Check-ins2:16
Battery wires ✓ Check-ins3:17
Power wires and on/off switch ✓ Check-ins4:42
Motors/propulsion ✓ Check-ins6:09
Motor controller functions ✓ Check-ins5:29
Motor controller ✓ Check-ins10:02
Motor controller connections ✓ Check-ins6:33
Arduino connections ✓ Check-ins5:04
Digital camera connections ✓ Check-ins6:50
Digital camera connections II3:25
5 volt power distribution board ✓ Check-ins5:23
Digital recorder/player connections ✓ Check-ins6:55
Power connector for the Arduino ✓ Check-ins2:31
Prototype board ✓ Check-ins3:07
Motor controller connection to Arduino ✓ Check-ins2:36
Camera connection to the Arduino ✓ Check-ins3:45
Bumper switches9:48
LED eyes ✓ Check-ins7:30
IR sensor ✓ Check-ins1:33
Chassis modifications ✓ Check-ins3:01
Camera wiring update ✓ Check-ins3:20
Unit 8: Lego robotics
Introduction
Coin detector
Ant bot
Unit 9: Reverse engineering
Household items
Hair dryer
DVD player
What is inside a DVD player? (1 of 5) ✓ Check-ins3:50
What is inside a DVD player? (2 of 5) ✓ Check-ins5:12
What is inside a DVD player? (3 of 5) ✓ Check-ins3:13
What is inside a DVD player? (4 of 5) ✓ Check-ins8:24
What is inside a DVD player? (5 of 5) ✓ Check-ins2:53
What is inside a universal remote control? ✓ Check-ins7:23
Learn this with a class
With a class on Puzzicle this course runs as a timetable of live study parties: your batch watches together and answers the check-ins, sometimes with a teacher leading.
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