Daniel Cell
Outer copper vessel 125 x 75 mm with perforated shelf and terminal, a porous pot 150 x 50 mm and a zinc rod 125 x 12 mm, with support and terminal.
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Electricity
Demountable Transformer
This heavy duty demountable transformer can be used for the study of transformer theory and many other alternating current phenomena. This kit consists of:
- A magnetic circuit made of highly permeable U shape metal sheet, which can be closed using two clamps with tightening screws.
- Section: 40 x 40 mm with 150 mm length and 170 mm height.
- One coil of 6000 turns with maximum current of 0.2 ampere. Intermediary coil of 2000 turns output.
- One coil of 600 turns with maximum current of 2.5 ampere, which is mainly used to create the primary of transformer.
- One coil of 1200 turns, with maximum current of 1.25 ampere, fitted with intermediary 400 and 800 turns’ outputs.
- One coil of 72 turns, with maximum current of 12 ampere, fitted with intermediary 6, 30, 54 and 66 turns’ outputs.
- Power supply cable.
PH50170 -
Electricity
Circuit Breaker Demonstration
Investigate the working principle of circuit breaker type fuse, with this demonstration model. The apparatus is built on a robust plastic base and includes resistive loads to simulate external wiring circuits. Applications of the thermal response of bimetal strips and also electromagnetism (movement from a solenoid) are clearly demonstrated in this model.
When a 12VDC supply is connected (not supplied) the LED lights to show that current is flowing in the external circuit and the bi-metal strip can be seen to bend as its heater coil raises the temperature. After a few minutes the bending is sufficient to trip the mechanism and the current path is broken. At any current selection a short circuit situation can be initiated by pressing the red button and this produces an immediate response from the solenoid to disconnect the supply.PH50136C
