Reed Relay capacitor
Product Code : JA-EE-7684
The JaincoLab reed relay capacitor switch (SKU JA-EE-7684) is a single-pole changeover reed relay used to charge and discharge a capacitor again and again at a known rate. Driven by a power signal generator, it changes over between 5 and 400 times per second, so students can relate the average charging current to capacitance, supply voltage and switching frequency. It is used with a parallel plate capacitor in senior-secondary and undergraduate electrostatics practicals and classroom demonstrations.
Specifications
This single-pole changeover relay is rated for 5 to 400 changeovers per second from a power signal generator, with maximum contact ratings of 12 V and 10 mA and a 12 ohm resistor protecting the contact. Only values taken from the product data are listed in the table.
| Product | Reed Relay capacitor |
| SKU / Product code | JA-EE-7684 |
| Relay type | Single-pole changeover reed relay |
| Switching rate | 5 to 400 changeovers per second (up to 400 Hz) |
| Drive source | Power signal generator |
| Maximum contact rating | 12 V, 10 mA |
| Contact protection | 12 ohm current-limiting resistor |
| Used with | Parallel plate capacitors |
Applications of the reed relay capacitor switch
The switch is used wherever a capacitor has to be charged and discharged many times per second so that a small, steady average current can be read on a meter. Typical uses in school and college physics laboratories are:
- Measuring the capacitance of a parallel plate capacitor from switching frequency, supply voltage and average current
- Showing how capacitance changes with plate separation and plate area
- Comparing capacitance with air and with an insulating sheet between the plates
- Demonstrating repeated charge and discharge cycles in senior-secondary and B.Sc electrostatics work
Scope of supply and ordering
This listing covers the reed relay capacitor switch, SKU JA-EE-7684, for use with a parallel plate capacitor and a power signal generator. Items used alongside it, such as the capacitor, signal generator and meters, can be added to the same quotation. Accessories, spares and quantities are confirmed on the quotation.
MOQ, lead time and packing are confirmed on each quotation for the quantity ordered and the delivery destination. Single units for one department and bulk quantities for school, college and tender orders are both supplied.
Frequently asked questions
What switching rate does the reed relay support?
It is specified for 5 to 400 changeovers per second when driven by a power signal generator, so the charge-discharge frequency can be set to suit the experiment.
What are the contact ratings?
Maximum contact ratings are 12 V and 10 mA, and the contact is current-protected by a 12 ohm resistor. Keep the capacitor supply within these limits.
Which capacitor is it used with?
It is intended for repeated charging and discharging of parallel plate capacitors, such as the parallel plate capacitor in the same JaincoLab electrostatics range.
Related products
Other items from the JaincoLab electrostatics range that are used alongside this switch:
Browse the full electrostatics equipment category or the main physics lab equipment manufacturer in India hub.
Request a quote
To order the reed relay switch, send your quantity and delivery destination through the JaincoLab contact page for a quotation and spec sheet. For tender or project supply, see our tenders page.
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