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- De Forest Induction Coil, Used By Alfred N. Goldsmith, 1911-1919 - An induction coil creates a high-voltage, pulsating current which arcs across a "spark gap." The spark creates electromagnetic waves, which can then be detected by a radio receiver. Induction coils were essential to the first decades of wireless and radio. Used from the late 1880s until the 1920s, spark gap powered radios were replaced as vacuum tube transmitters became available.
- 1911-1919
- Collections - Artifact
De Forest Induction Coil, Used By Alfred N. Goldsmith, 1911-1919
An induction coil creates a high-voltage, pulsating current which arcs across a "spark gap." The spark creates electromagnetic waves, which can then be detected by a radio receiver. Induction coils were essential to the first decades of wireless and radio. Used from the late 1880s until the 1920s, spark gap powered radios were replaced as vacuum tube transmitters became available.
- Induction Coil -
- Collections - Artifact
Induction Coil
- Inductor -
- Collections - Artifact
Inductor
- Marconi Induction Coil, circa 1910 - An induction coil creates a high-voltage, pulsating current which arcs across a "spark gap." The spark creates electromagnetic waves, which can then be detected by a radio receiver. Induction coils were essential to the first decades of wireless and radio. Used from the late 1880s until the 1920s, spark gap powered radios were replaced as vacuum tube transmitters became available.
- circa 1910
- Collections - Artifact
Marconi Induction Coil, circa 1910
An induction coil creates a high-voltage, pulsating current which arcs across a "spark gap." The spark creates electromagnetic waves, which can then be detected by a radio receiver. Induction coils were essential to the first decades of wireless and radio. Used from the late 1880s until the 1920s, spark gap powered radios were replaced as vacuum tube transmitters became available.
- Induction Coil, circa 1899 -
- circa 1899
- Collections - Artifact
Induction Coil, circa 1899
- Inductor -
- Collections - Artifact
Inductor
- Spark Coil, 1870-1900 - An induction coil creates a high-voltage, pulsating current which arcs across a "spark gap." The spark creates electromagnetic waves, which can then be detected by a radio receiver. Induction coils were essential to the first decades of wireless and radio. Used from the late 1880s until the 1920s, spark gap powered radios were replaced as vacuum tube transmitters became available.
- 1870-1900
- Collections - Artifact
Spark Coil, 1870-1900
An induction coil creates a high-voltage, pulsating current which arcs across a "spark gap." The spark creates electromagnetic waves, which can then be detected by a radio receiver. Induction coils were essential to the first decades of wireless and radio. Used from the late 1880s until the 1920s, spark gap powered radios were replaced as vacuum tube transmitters became available.
- Induction Coil -
- Collections - Artifact
Induction Coil
- Induction Coil -
- Collections - Artifact
Induction Coil
- Spark Tone Tester, 1914-1918 -
- 1914-1918
- Collections - Artifact
Spark Tone Tester, 1914-1918