Related Clues:

• Radio tube
• Semiconductor device with two terminals
• Solar panel component
• Lightbulb component
• Simple semiconductor
• Electrical rectifier
• Girl with poem in the tube
• LED's D
• Two-grid vacuum tube
• Semiconductor type
• Vacuum tube which was the first practical electronic amplifier
• Short journey with poem in the Tube
• Amplifier of radio signals
• Part of a crystal radio kit
• Two-element semiconductor