Electricity and Electronics | |
mfa Accessories Power Module £14.70
This handy unit replaces the lantern battery and connector lead when powering mfa boards. It simply clips onto the top of an mfa board and is then connected to virtually any standard lab pack. It supplies a smoothed, regulated output of 5V at up to 1A. Two additional 4mm power output sockets provide power for the Movement Module buggy, Decisions Module relay loads etc., and can also be used to take power to other systems such as Alpha, Mistec, Omega, Kent etc.
mfa Connector Lead £1.25
A 300mm flexible lead terminated with rewireable 2mm plugs. Available in red, white, yellow, green, blue or black.
The classic experiment for demonstrating the need for high voltage transmission has been assessed by CLEAPSS as being potentially lethal. As the experiment is now featured in the new Science curricula, we have developed a new, safe form of the experiment, which has the following features: As featured in the January 07 CLEAPSS circular. Touchproof, locking high voltage connectors used throughout – it is virtually impossible to get an electric shock Clear lid to the casing so pupils can see how it works and trace the circuit Indicators for low/high voltage The resistance wires can be connected to either the high or low voltage system for direct comparison of lamp brightness/energy losses. By gripping the insulated cables, students can feel when and where the energy is being lost, mainly as heat. Voltmeter sockets for measuring the high voltage Comes complete with two boxes (transmit and receive), insulated resistance wires, two mounted SBC lamps and full instructions National Grid Simulation £111.00 Following our display of the above at the ASE AGM, many delegates asked whether we could supply the pylons which we used in our demonstration. Therefore, due to public demand, we are supplying a kit of parts, with instructions and glue, to make up two pylons. Pylons Kit £11.00
Factors affecting a Lamp’s Brightness
A modern, and safe, version of another potentially lethal experiment. Students often think that the brightness of a lamp is only dependent on the current flowing through it. The unit allows the teacher to safely switch a 12V lamp in series with a mains lamp and study the current flow through them. Using the unit provokes thinking about power and voltage, energy etc. Students see the need to go beyond discussion of current. It may also be used to investigate potential dividers and resistors in series. Factors affecting a Lamp’s Brightness £26.50
| Waterproof Illuminated Switch Boxes
Ideal for outdoor use. Weatherproof when installed according to instructions. Suitable for fish pond pumps, outdoor lighting etc. Available in several switch numbers. Maximum loading is 360W per switch. All outlets are individually fused. 2 way switch (720W) £12.60 3 way switch (1080W) illustrated £15.75 4 way switch (1200W) £21.00 5 way switch (1200W) £26.25 6 way switch (1200W) £38.00 Locktronics
We are now agents for the full range of Locktronics products. This includes a new computer software package, a “bombproof” power supply, all the standard curriculum packages and lots more. We are also able to “tailor make” systems to meet your specific requirements. In addition, we can supply all spare parts, blank carriers and operate a repair service for all Locktronics equipment (although this is unlikely to be needed due to the robustness of the system). We have also produced a power supply specifically designed for use with Locktronics. Please refer to the Regulated Power Supplies section for more details. Please contact our sales desk and let us quote for your requirements. Alternatively click here to download the Locktronics Price List. Student-proof MES lampholder OK, we admit it, nothing is truly student (or teacher) proof, but here is our best effort. Following a request from a technician we developed this product. The technician wanted an MES lampholder which prevented the children from unscrewing the lamp, with all the aggravation that that entailed. Our lampholder comes fitted with a 6.5V, 300mA lamp (that's bright!) fitted in a small ABS case so that the lamp cannot be easily removed. To replace the lamp requires the undoing of four screws in the base - simple for the technician but awkward for the student. Fitted with 4mm sockets. Student-proof MES lampholder £3.50 Class set (16) £48.00 (£3 each)
ERIC - Electrical Resistance Indicator for the Classroom
An extremely versatile kit for teaching about electrical resistance. Draw a pencil line across ERIC, study the LED brightness. Draw parallel resistors, change the resistance length, use a different pencil and compare resistances. Then make the line(s) thicker. What happens? Can be used to compare conductors and insulators including the entire class! Comes with all the kit shown above and a comprehensive set of instructions. ERIC £12.00 |
