Edexcel GCSE Design and Technology · 1DT0
Specification 1.6.3, 5.2.3 · Paper 1
Revise: OutputsLEDs are compact, energy-efficient compared with filament lamps, long-lasting and quick to switch on and off. These characteristics make them well suited to battery-powered products and flashing indicators. Their limitations include the need for correct polarity and current control.
- Revise: Output Devices
The distinction between positive and negative electrical connections; some components must be connected the correct way round to work.