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3 lamp holder boards
Size: 230mm x 50mm x 190mm
opened neck and back section to study vertebrae
2 layers of Oxford cloth and 2 layers of PVC waterproof layer are compounded
Premium Quality: Triple Prism on Stand is made of high-grade construction all the way through
Demonstration Relay Unit Puppets 3 lamp holder boardsPractical Learning Tool: The Demonstration Relay Unit offers a hands on way to understand the functioning of a relay. Visual Circuitry: Clearly observe the separation between the coil circuit and the switched circuit, enhancing comprehension. Safety Feature: Illustrates the safety advantage of using relays to control high voltage circuits with low voltage ones. Electromagnetic Action: Learn how the coil's electromagnetic field attracts the armature to
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