Description

sodium benzoate

and connecting leads mounted on 4mm-socketed bases for building circuits from 40-plus components

and a selection of wound coils

producing audible beats when sounded against its fixed-frequency partner on the matching wooden resonance base

and 6V-powered ignition light staging each step

Standard Demonstration Dynamo with Hand Driver on Base cylinder sodium benzoateHand cranked pulley steps up to a smaller dynamo pulley through a rubber belt, lighting an LED at the 4mm sockets; the unit also runs as a motor on 6 8V DC for energy conversion demos.

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Standard Demonstration Dynamo with Hand Driver on Base cylinder sodium benzoate

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