Tapping Key
Product Code : JC-SL-4832
The Tapping Key (SKU JC-SL-4832) is a momentary switch for physics circuit experiments. A light, flexible nickel-plated brass strip carries a contact: pressing the insulated knob makes or breaks the circuit for as long as it is held, and releasing it lets the strip spring back so the opposite state returns automatically.
Specifications
The tapping key is built on an insulating Bakelite plate:
| Product | Tapping Key |
| SKU | JC-SL-4832 |
| Strip | Brass, nickel plated, light and flexible |
| Action | Momentary: circuit made or broken while pressed, restored on release |
| Knob | Insulated |
| Terminals | Mounted on the plate |
| Base | Bakelite plate |
Where the tapping key is used
- Meter bridge and potentiometer circuits, closed only while a reading is taken
- Galvanometer circuits in which current should flow only for a moment
- Charging and discharging experiments that need a brief contact
Scope of supply and ordering
Each tapping key is supplied ready to wire. Quantities and packing are confirmed on the quotation.
Frequently asked questions
How does the Tapping Key work?
Pressing the knob moves the flexible strip onto its contact and changes the circuit; releasing it returns the strip, so the circuit reverts automatically.
What is the key made of?
A nickel-plated brass strip with an insulated knob, with terminals mounted on a Bakelite plate.
Related products
More electricity apparatus is in the school lab equipment range.
Request a quote
For the Tapping Key, share your quantity through our contact page. For tender or project supply, see our tenders page.
