Warning About Electrical Shock
Some of these experiments could produce injury or death. Don't conduct any of these experiments unless qualified to do so. If under 18, proceed only under adult supervision!
The information contained in this website is for general information purposes only. The information is provided by www.sullivan-county.com and I endeavor to keep the information up to date and correct. The experiments presented on this website were conducted in a college classroom under strict instructor supervision. Any reliance you place on such information is therefore strictly at your own risk.
Most of the experiments presented use 5, 12, or 24 volts D.C. and should be safe. For those using over 120 or 220 volts I recommend the following be used in the classroom:
1. Use an isolation transformer. In the case of 220 and higher voltage use a step down transformers to 120 volts.
2. Place a 40 or 25 watt incandescent bulb in series with the experiment. The will limit the current in case of a short. Be extra careful with polarized capacitors because they can explode even under voltage if connected backwards or to A.C.
The primary factor for the severity of electric shock is the electric current which passes through the body, in particular the heart. This current is of course dependent upon the voltage and the resistance of the path it follows through the body. An approximate general framework for shock effects is as follows:
To put this in everyday terms, 1 mA is .001 Amp. A 100 watt light bulb draws 100 watts divided by 120 volt equals .840 Amps or 840 mA. The current from a 25 watt bulb (.208 A 208 mA) can kill you.
- Web Master
- Gen. Electronics
- YouTube Channel
- Arduino Projects
- Raspberry Pi & Linux
- PIC18F2550 in C
- PIC16F628A Assembly
- PICAXE Projects
- Constant Current Circuits with the LM334
- LM334 Constant Current Source with Resistive Sensors
- LM317 Constant Current Source Circuits
- Introduction Hall Effect Switches, Sensors, and Circuits
- Using Ratiometric Hall Effect Sensors
- Pulse Width Modulation Power Control for Microcontrollers
- Introduction to PIC12F683 Programming
- Basic Transistor Driver Circuits for Micro-Controllers
- Opto-Isolated Transistor Drivers for Micro-Controllers
- Arduino Stepper Motor Coil Winder
- Considerations for Using Stepper Motors
- How to Connect Easy Driver Micro-Stepper Controller to Arduino
- Using a Unipolar Stepper Motor with a Arduino
- Using the MC3479 Stepper Motor Controller with Arduino
- Connecting the Arduino to a L298N H-Bridge
- L298N Motor Controller Theory and Projects
- ULN2003A Darlington Transistor Array with Circuit Examples
- Tutorial Using TIP120 and TIP125 Power Darlington Transistors
- Driving 2N3055-MJ2955 Power Transistors with Darlington Transistors
- Understanding Bipolar Transistor Switches
- N-Channel Power MOSFET Switching Tutorial
- P-Channel Power MOSFET Switch Tutorial
- H-Bridge Motor Control with Power MOSFETS
- More Power MOSFET H-Bridge Circuit Examples
- Build a High Power Transistor H-Bridge Motor Control