Logged out
Access All our Essays in an Instant
Swap your work for FREE access, or pay £4.99 for instant access
The aim of this investigation is to design, build and test a sensor.
Member rating:
(5 votes)
| Words:
| Submitted: Tue Sep 02 2003
Page Preview
On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:
Sensors Coursework Aim and Hypothesis The aim of this investigation is to design, build and test a sensor, which has an appropriate: * Sensitivity * Response time * Resolution * Range * Minimum random/systematic error The sensor I have designed operates by detecting the intensity of light using an LDR (light Dependant Resistor), also known as a photoconductor, in a Potential Divider circuit. In this experiment my input variable will be the mass of milk powder added to 750ml of water. My outcome variable will be the potential difference across the normal resistor (which changes as the resistance varies). I will be measuring this using a multi-meter of resolution 0.01V. This will be positioned as shown in the circuit diagram below. Background A potential divider is a resistor or a chain of resistors connected in series in an electrical circuit. It is used to obtain a known fraction of the total voltage across the whole resistor or...
Get instant access
- Instant, unlimited access to our documents in full
- Swap your work for free access, or pay £4.99
- To see the full version of this document and 146,209 others
Receive email updates for this category
- Simply tell us your email address and receive a weekly Study Help Email for FREE
- Receive 3 FREE essay views with each email
- Get all the latest essays from Coursework.Info & discussion from TheStudentRoom.co.uk
