3B Scientific High Current Coil User Manual

8497406 Coil with 6-turn winding

Instruction sheet

05/05 JH

3B SCIENTIFIC3B SCIENTIFIC

3B SCIENTIFIC®

3B SCIENTIFIC3B SCIENTIFIC

3

PHYSICSPHYSICS

PHYSICS

PHYSICSPHYSICS

®

The coil with 6-turn winding acts as a high current coil for
needle-point melting experiments.

1. Safety instructions

• The safety of operators and of the high-voltage coil

itself can only be guaranteed when it is used accord­ing to the instructions.

• Carry out the experiment on a heat-resistant surface.

The melted part of the pin naturally falls downwards
due to gravity.

• Only use needles with heads that fit into the screw

terminals.

• After the experiment allow the remains of the pins to

cool down for at least 5 minutes.

• Do not cover air vents.

• Any modifications to the transformer set-up must be

made with the primary voltage switched off.

• Do not open the coil case.

2

1 Screw terminals (for attaching pin)

2 Plastic case

3 Air vents

1

• Do not allow the equipment to come into contact

with liquids.

2. Description, technical data

Coil made of impact-resistant plastic with two screw ter­minals for attaching pins. The characteristic properties of
the coil (no. of winding turns, maximum long-term cur­rent, effective resistance and inductance) are specified
on the case.
Winding turns: 6

DC resistance: 3 mΩ

Max. current for long-term use: 60 A
Inductance: 0.25 mH
Diameter of screw terminal
opening: 4 mm
Dimensions in mm: 120 x 90 x 70 (LxWxH)
Opening for iron core: 42 x 42 mm
Weight: 0.6 kg approx.

3

2.1 Accessories

8497180 Transformer coil with yoke and clamps.
8614190 Transformer base.
8614192 Clamping mechanism for iron core.
8497420 Mains coil with 600-turn winding
8497331 Nails for Nail Fusion Experiment

3. Needle-point melting experiment

Caution: The melted part of the pin naturally falls down­wards due to gravity.

• Assemble the transformer as in Fig.1 and place it on a

heat-resistant surface.

• Place pins into the openings provided and secure

them with the knurled screws.

• Mount the mains coil and switch it on.

• The pin starts to glow because of the high current

and gravity causes it to bend downwards.

• After the experiment, allow the remains of the pins

to cool down for at least 5 minutes.

Fig.1

ELWE Didactic GmbH • Steinfelsstr. 5 • 08248 Klingenthal • Germany • www.elwedidactic.com

3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com

Technical amendments are possible

4