DC String Vibrator
Product Code : JL-LEP-10406
The DC String Vibrator (SKU JL-LEP-10406) is a motor-driven string vibrator used to demonstrate standing waves on a string. An offset-weighted shaft on a 0–6 V DC motor shakes the string, and a stepless attenuator adjusts the vibration frequency until clear nodes and antinodes form. It is mounted on a steel platform with binding posts and comes with 5 m of 3 mm polyester-cotton string. JaincoLab manufactures it in India.
Specifications
The string vibrator uses an offset-weighted shaft on a DC motor running from 0 to 6 V, with stepless frequency control through an attenuator, a steel mounting platform with binding posts for the supply wires, and 5 m of 3 mm (size #72) twisted polyester-cotton string.
| Product | DC String Vibrator |
| SKU | JL-LEP-10406 |
| Purpose | Demonstrates standing waves on a string |
| Drive mechanism | Offset-weighted shaft on a DC motor |
| Input voltage | 0 to 6 V DC |
| Frequency control | Stepless attenuator |
| Mounting | Steel platform with binding posts for external wire connection |
| String included | Twisted polyester-cotton string, 3 mm diameter (size #72), 5 m |
| Specification reference | As per DepEd guidelines |
Applications of the string vibrator
One end of the string is tied to the vibrator and the other passed over a pulley or fixed point; adjusting the frequency or tension produces standing waves with one, two or more loops that students can count and measure.
- Producing standing waves and identifying nodes and antinodes
- Relating the number of loops to vibration frequency and string tension
- Measuring wavelength between nodes to find wave speed
- Linking standing waves on strings to musical instruments
- Waves practicals in secondary and senior secondary physics
Scope of supply and ordering
The listing covers the DC string vibrator on its steel platform and 5 m of string as described in the specification table. Power supply, pulley, masses and quantities are confirmed on the quotation.
Frequently asked questions
What does the string vibrator demonstrate?
Standing waves on a string.
How is it driven?
By an offset-weighted shaft on a DC motor, powered at 0 to 6 V DC.
How is the frequency changed?
With a stepless attenuator.
Is string supplied?
Yes. 5 m of twisted polyester-cotton string, 3 mm diameter (size #72).
Related products
Waves apparatus often ordered with the string vibrator:
More waves and sound apparatus is listed in the Laboratory Equipment Products range of JaincoLab, a physics lab equipment manufacturer in India.
Request a quote
To order the DC String Vibrator, send the quantity and delivery destination through the JaincoLab contact page or email [email protected]. Buying under a laboratory tender? Use our tenders page.
