Quick Answer: The Spring Unit demonstrates a reversible series of energy changes, from electrical to mechanical to potential energy stored in a large clock spring, then back to mechanical and electrical energy to light a lamp.
Last updated: October 2026
Key Features
Large clock spring with a ratchet and pawl
Spring geared to the motor/generator
Spring may be wound by hand if necessary
Guard strips over the spring and the gears
About This Product
Electrical energy from a battery or power pack becomes mechanical energy in the motor and is then stored as potential energy in the spring. The spring later drives the motor/generator, returning the energy to mechanical form and finally to electrical energy that lights a lamp.
Frequently Asked Questions
Q1. Can the spring be wound without power? The spring may be wound by hand if necessary.
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