Quick Answer: The Circuit Board, Junior is a low-voltage board for building and comparing series and parallel circuits, with spring-loaded tension-spring contacts that take 1.5 V and 3 V DC bulb, switch and cell modules.
Last updated: October 2026
Key Features
Build series and parallel circuits on one board
Spring-loaded contacts using phosphor bronze or nickel-plated tension springs
Works with 1.5 V and 3 V DC modules: bulbs, switches and cells
Rigid ABS insulated polymer base
Sized for a pair of students on a classroom bench
Technical Specifications
Specification
Value
Base
ABS / insulated polymer, rigid
Contacts
Phosphor bronze / nickel-plated tension springs
Modules
1.5 V / 3 V DC bulbs, switches, cells
Group size
2 students
HS code
9023.00.10
About This Product
Junior learners press components into the spring contacts to see how adding bulbs in series dims them while parallel branches keep them bright, and how a switch opens or closes a circuit. Because no wires need stripping or soldering, circuits can be changed quickly to test ideas about current and voltage. Educational Instrument can dispatch the Circuit Board, Junior to laboratories in Trinidad and Tobago, Uruguay, Chile, Qatar, Eritrea and Solomon Islands.
Frequently Asked Questions
What voltage does the Circuit Board, Junior use?
It takes 1.5 V and 3 V DC modules such as bulbs, switches and cells.
