Who built the first regeneration circuit?

Who built the first regeneration circuit?

• A. Edwin Howard Armstrong
• B. Lee De Forest
• C. Samuel Morse
• D. Alexander Popov

Answer: (A)

Regenerative circuits use positive feedback to boost a tube amplifier’s gain, letting a weak radio signal be amplified more efficiently. Edwin Howard Armstrong built the first practical regenerative circuit, creating a regenerative receiver in the 1910s and patenting the concept. This approach lets the receiver “regenerate” the signal, dramatically increasing sensitivity and selectivity with fewer components. Lee De Forest did invent the Audion, a crucial amplification device, but not the regenerative feedback idea; Samuel Morse devised the telegraph, and Alexander Popov conducted early radio experiments. So Armstrong is the one credited with the first workable regenerative circuit.

Regenerative circuits use positive feedback to boost a tube amplifier’s gain, letting a weak radio signal be amplified more efficiently. Edwin Howard Armstrong built the first practical regenerative circuit, creating a regenerative receiver in the 1910s and patenting the concept. This approach lets the receiver “regenerate” the signal, dramatically increasing sensitivity and selectivity with fewer components. Lee De Forest did invent the Audion, a crucial amplification device, but not the regenerative feedback idea; Samuel Morse devised the telegraph, and Alexander Popov conducted early radio experiments. So Armstrong is the one credited with the first workable regenerative circuit.