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triggering at 20mV
In the Hero City Board Game players move around the board by spinning the spinners and solving multiplication sums
1 metal (6 hole)
The amplifier has an internal 10W speaker that can be switched off
(2) Light gate operated start/stop
National Grid Tax on Sales 0% triggering at 20mVThe National Grid Demonstration is an extremely safe way to demonstrate the advantages of distributing power at high voltages. The demonstration is made up of two step up down transformers that are used to transform the 12V ac from a school power supply to 115V (nominal). The transmission line can be connected to either the low or High voltage connectors. The mounted bulb glows brightly when using the High Voltage connection and only dimly when the
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