Sonometer Power Transformer

Product Code : SCL-EAE-11323

The Sonometer Power Transformer is a laboratory step-down supply used to operate a compatible sonometer excitation electromagnet. It provides low-voltage alternating current for producing periodic magnetic force near a stretched ferromagnetic wire during forced-vibration, resonance and AC-frequency experiments.

Product Description

The transformer is intended to reduce the available laboratory input voltage to a lower AC output suitable for the excitation coil. When connected to a compatible electromagnet, the alternating current creates a changing magnetic field that applies periodic force to the sonometer wire without continuous mechanical striking.

Students can vary the vibrating length or applied tension until the wire reaches resonance and shows a marked increase in amplitude. The transformer must be matched to the electromagnet’s verified coil voltage, current, frequency and duty cycle. These electrical ratings are not published for the requested unit and require confirmation before use.

Key Features

• Low-voltage AC supply: Intended to energize a compatible sonometer excitation electromagnet.
• Step-down operation: Reduces the laboratory input to the required experimental voltage.
• Resonance-experiment support: Enables periodic magnetic excitation of a stretched wire.
• AC-frequency application: Supports standard sonometer methods for investigating supply frequency.
• Non-contact wire excitation: Works with an electromagnet positioned close to the sonometer wire.
• Bench-top laboratory format: Intended for supervised school, college and technical-institute practicals.
• Protected output arrangement: Fuse, thermal protection and terminal guarding.

Technical Specifications

What's Included

• One sonometer power-transformer unit
• Primary input cable or detachable lead
• Low-voltage AC output terminals or leads
• Connecting leads for the excitation electromagnet
• Replacement fuse
• Operating instructions and wiring diagram

Applications

• Powering a compatible sonometer excitation electromagnet.
• Producing forced transverse vibration in a stretched wire.
• Demonstrating resonance and maximum vibration amplitude.
• Studying the relationship between frequency, tension and vibrating length.
• Determining alternating-current frequency using a sonometer.
• Supporting sound, waves and electromagnetic-excitation practicals.

Related resources include the Sonometer Excitation Electromagnet, the Physics Laboratory Equipment Guide, the Transformer Experiment Kit Guide and the broader Physics Laboratory Equipment category.

How to Use

1. Set up the sonometer with the required wire, bridges, hanger and masses.
2. Position the excitation electromagnet near the middle of the wire without contact.
3. Confirm that the transformer output matches the electromagnet’s coil rating.
4. Keep the transformer switched off while making all connections.
5. Connect the low-voltage AC output to the electromagnet.
6. Switch on the transformer and observe the wire vibration.
7. Adjust the wire length or tension until maximum amplitude indicates resonance.
8. Switch off the transformer after each observation and before repositioning components.

Safety note: Never connect the sonometer electromagnet directly to mains electricity. Use only a confirmed isolated low-voltage source, avoid prolonged energization, and stop operation if the transformer, coil or leads become excessively warm.

Care & Maintenance

• Keep the transformer enclosure, terminals and ventilation openings dry.
• Inspect input and output leads before each experiment.
• Replace fuses only with the specified type and rating.
• Store the unit disconnected from the supply in a labelled cabinet.

Why Choose Lab Equipments Ambala

Lab Equipments Ambala manufactures and supplies sound, wave, magnetism and electrical laboratory apparatus from Ambala, India. Its published Sonometer Excitation Electromagnet is designed for low-voltage AC operation during forced-vibration and resonance experiments. The company supplies schools, colleges, universities and technical institutes. Buyers should approve the transformer output, coil compatibility, protection system and duty cycle before procurement.

Frequently Asked Questions

What is a Sonometer Power Transformer used for?

It supplies low-voltage alternating current to a compatible electromagnet used to excite vibration in a sonometer wire.

Can the electromagnet be connected directly to mains power?

No. The published electromagnet instructions require a suitable isolated low-voltage AC source.

What secondary voltage is required?

The required voltage depends on the verified excitation-coil rating and has not been published for the transformer.

Why is alternating current used?

Alternating current produces a changing magnetic field that applies periodic force to the sonometer wire.

Can the apparatus determine AC frequency?

Yes. A compatible sonometer and excitation system can be used to investigate AC frequency through resonance measurements.

Is the transformer supplied with the electromagnet?

The electromagnet’s published packing information does not confirm that a transformer is included. Treat it as a separate component unless the approved quotation states otherwise.

Request the confirmed primary input, secondary voltage, output current, VA rating and compatible coil specification, or explore the Physics Laboratory Equipment category.