Toepler-Holtz Machine 5A50.15

The big Toepler-Holtz Machine which is used in many demonstrations is located in the [:ElectrostaticsCabinet:Electrostatics Cabinet], A3. There are two other smaller Toepler-Holtz Machines located in the [:ElectrostaticsCabinet:Electrostatics Cabinet], A4, but as of 4/2008 they are both in need of repair.

Use the insulated handles to bring the electrodes together before attaching any leads to the Toepler-Holtz.

When ready to use, separate the electrodes by several cm.

Turn the crank in the direction of the arrow. Sparks should jump between the electrodes.

The Toepler-Holtz works by amplifying initially small potential differences between the electrodes through a process of positive feedback, much like the [:WimshurstMachine:Wimsurst Machine].

When finished, discharge the machine: use the insulated handles to bring the electrodes together again.

The spark from the big Toepler-Holtz Machine carries higher current than the Department's Wimshurst machine or Van de Graaff Generator, possibly a large enough current to cause injury. Discharge the machine before touching it, or allowing students near it.

attachment:ToeplerHoltz5A5015.jpg

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