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Physics > Electrics >

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Contact screw with holder

Art no 48444

The contact screw is needed to build a classic alarm bell. It is mounted in a Column with screw.

9.90 EUR

(12.38 EUR incl. vat)

pcs	Delivery - immediate

Product description

The contact screw is needed to build a classic alarm bell.
It is mounted in a Column with screw.

In the classic alarm bell, a solenoid magnet pulls the armature down to the bell which then rings. Meanwhile, the power supply is cut to the solenoid magnet and the armature returns. The power is then reconnected and everything is repeated...
The contact screw provides an adjustable connector to the armature in the alarm bell.

Material: Screw of surface-treated brass in steel holder.
Dimensions: Length 9 cm.

The bottom image shows the Base Plate where an alarm bell has been fitted. Click on the image to view the component parts.
These parts are ordered separately, see below.

Base plate

Art no: 48422
Strong base plate for laboratory experiments with, for example, resistance wire and alarm bell.

27.50 EUR

Foot for Base Plate

Art no: 48426
The Foot can be mounted on a base plate and is designed for 8 mm columns.

9.90 EUR

Column with screw

Art no: 48432
At the top of the Column, a wire is pinched in place using a butterfly screw. Can be mounted in the Foot to the Base Plate.

5.90 EUR