Reed Switches

Reed Switches

Find out more about reed switches and their uses in RE

electric circuit | electronics | wind

A reed switch consists of a sealed glass tube containing a pair of ferrous metal contacts. When a magnetic field comes close to the reed switch, the two contacts come together enabling a current to pass through the switch. Most commonly reed switches are used in burglar alarm systems in which they act as window and door sensors.
NEW We are now selling reed switches in the REUK Shop.



Reed switches have many uses in renewable energy generation, particularly with DIY wind turbines. For example a reed switch within a simple electric circuit can be used to count revolutions of the wind turbine for analysis purposes (tachometer). Find out more about reed switch wind turbine RPM meters using a calculator or pedometer here.



Article Last Modified: 09:54, 4th Apr 2007

Comment on this Article

If you have any comments on this article, please email them to neil@reuk.co.uk.

---

Related REUK Categories

electric circuit | electronics | wind

REUK.co.uk



Advertise here from just
£2.04 per month (info)



Site Search






• HOME
• REUK Blog
• General
• Solar
• Shopping
• Wind
• Electronics
• Education
• News
• EnergyEfficiency
• ElectricCircuit
• Water
• Heating
• Carbon
• Storage
• Transport
• Biomass
• Lighting
• Hydro
• Geothermal
• Wave
• Websites
• RaspberryPi
• Tidal
• Recycling
• Thermoelectric
• Website

Clearance

and Special Offers

New Solar Panels
SPECIAL OFFER


From just
< £1 per Watt
delivered!

BEST UK prices on a range of high quality mono-crystalline PV Solar Panels.

90W @ £119 + £8 P&P
80W @ £79 delivered
50W @ £51 delivered
30W @ £34 delivered
20W @ £24 delivered

12VDC Energy Saving Light Bulbs



A range of 12V DC energy saving lightbulbs. CFL, CCFL, and LED technology, bayonet and edison screw fittings available, 3-20 Watt power output options, and choose from warm white and pure white. From just £6.

Radiator Booster Mk 3


£24.95

Cut heating bills and get warmer rooms for just 30p per year - save from £70-£140 per year with this radiator booster!


3 Watt LED GU10 Spotlights


From just £2.38
inc. delivery!

3 Watt LED spotlights - direct replacement for standard 35 or 50 Watt halogen GU10 spotlight bulbs with 90-95% reduction in electricity consumption.


Eco Kettle 3


£59.99

Energy efficient Eco Kettle 3. New improved version of original Eco Kettle and Eco Kettle 2. Boil only the water you need. Temperature control feature. Save money and use 31% less electricity.


OWL CM160 Wireless Electricity Monitor (USB)



£40.99

NEW - Buy the new improved OWL CM160 wireless energy monitor for measuring your home or office electricity consumption in real-time. This OWL+USB includes a track and store function and can connect to PC via USB for data download and analysis.



Screwfix Direct Clearance Sale. Free next day delivery on all orders over £50.

FreeLoader Pro


£68.95
FREE DELIVERY

NEW - Buy the new FreeLoader Pro - the ultimate solar charger for mobile phones, PDAs, smart phones, and unlike most other solar chargers: Sat Nav systems, digital cameras and video cameras.


Rainwater Diverter


just £8.19

Rainwater diverter kit for standard 65mm square and 68mm round downpipes. All fittings supplied. Also available in black for the same price.


Free Mental Maths
Worksheets
for children.