Warning

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 while we endeavor to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the website for any purpose. Any reliance you place on such information is therefore strictly at your own risk.

In no event will we be liable for any loss or damage including without limitation, indirect or consequential loss or damage, or any loss or damage whatsoever arising from loss of data or profits arising out of, or in connection with, the use of this website. Through this website you are able to link to other websites which are not under the control of www.sullivan-county.com. We have no control over the nature, content and availability of those sites. The inclusion of any links does not necessarily imply a recommendation or endorse the views expressed within them.

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.

[ My Homepage ] [ Electronics Mainpage ]

Tutorials updated/added August 2009:
• Basic Triacs and SCRs
• Solid State AC Relays with Triacs
• Basic Transistor Driver Circuits for Arduino Micro-Controllers
• Opto-Isolated Transistor Drivers for Arduino Micro-Controllers
• Multi-use demo board built in class.
• Using the ATMEGA168/Arduino with the TA8050 Motor Controller
  Demonstrates use of pulse-width modulation for motor speed control.

• Basic Capacitors
• Basic Diodes and Rectifiers
• Series batteries
• Parallel batteries
• Potato battery
• Thermoelectricity
• Reed Switches
• Bi-Metallic Thermostats

Added February 2009: Using a CdS Photo resistor. How to use photocells and touches on comparators, thermistors, relays, etc. Includes circuits to build and test.

• Voltage Comparator Information And Circuits
• Photocell with a Comparator
• Photocell with relay and Triac
• Basic Thermistor

Arduino demos April 30, 2009:
Using the ATMEGA168/Arduino with a 24LC08 Serial EEPROM
Using the ATMEGA168/Arduino with a DS1307 Real Time Clock
More to come. this will include using the MCP23016 I2C I/O Expander and several simple demo projects for robotics and power control.

Atmega168/Arduino features:
14k flash program storage
1k RAM for program memory
6 PWM outputs
6 A/D inputs
UART and SPI interfaces
2 Hardware interrupts
20 general purpose I/O pins (shared with PWM and Analog pins)
16 MHz RISC microcontroller
Open-source hardware, IDE, bootloader
Easy upgrade to more powerful hardware (Wiring)
Easy to use and learn.