Relay Demonstration Manufacturer,Supplier and Exporter in Africa
Product Code : DA-E-11379
Quick Answer: The Relay Demonstration unit is used to investigate how a relay works, with a 2 V DC control input switching a separate circuit of up to 12 V.
Last updated: October 2026
Key Features
- Shows how a relay functions in a clear, practical way
- Coil circuit visibly separate from the switched circuit
- Coil field attracts an iron armature to make the contact
- Lamp lights when the contact completes the circuit
- Switched supply voltage: 12 V max
- Control input voltage: 2 V DC
About This Product
When current flows through the coil, an electromagnetic field attracts the iron armature, whose end makes the contact, completes the circuit and lights the lamp; switching the current off opens the contact again. Because the coil circuit is clearly separate from the switched circuit, the unit also shows why relays let a safe low-voltage circuit control a high-voltage one.
Frequently Asked Questions
Q1. What voltages does the Relay Demonstration use?
The control input voltage is 2 V DC and the switched supply voltage is 12 V maximum.
Q2. What happens when the coil current is switched off?
The contact opens again and the circuit, including the lamp, is switched off.
Q3. Why does the separation of the two circuits matter?
It shows the principle behind relays: a safe low-voltage circuit can be used to control a high-voltage circuit.
Related: Electromagnetism range, Electromagnet Kit, U-Shaped Electromagnet, Variable Electromagnet Investigation.
For a quotation on the Relay Demonstration, contact Didactic Africa.
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