Variometer for Armstrong regenerative receiver
Variometer for Armstrong regenerative receiver
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- Description
- This is one of two tunable variable condensers used by Edwin Howard Armstrong in his first regenerative radio circuit in 1912. Turning the dial moves a set of plates inside the box in relation to a fixed set of plates. This changes the amount of charge stored in the electrical circuit and allows the listener to alter the received radio frequency.
- Location
- Currently not on view
- Object Name
- Capacitor, Variable
- capacitor
- variable condenser
- Other Terms
- Capacitor, Variable; Radio
- Date made
- 1912
- associated date
- 1912
- associated person
- Armstrong, Edwin Howard
- maker
- Armstrong, Edwin Howard
- Measurements
- overall: 7 1/4 in x 7 1/4 in x 7 1/2 in; 18.415 cm x 18.415 cm x 19.05 cm
- ID Number
- EM.314503.05
- catalog number
- 314503.05
- accession number
- 202631
- Credit Line
- from Marion Armstrong
- See more items in
- Work and Industry: Electricity
- Data Source
- National Museum of American History
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