January Day 1: Books, Coins, and Scientific Instruments
Wed, Jan 26, 2022 11:00AM EST
Lot 133
Ruhmkorff Induction Coil Transformer
Estimate: $300 - $600
Bid Increments
| Price | Bid Increment |
|---|---|
| $0 | $25 |
| $300 | $50 |
| $1,000 | $100 |
| $3,000 | $200 |
| $5,000 | $500 |
| $10,000 | $1,000 |
| $20,000 | $2,000 |
| $50,000 | $5,000 |
| $100,000 | $10,000 |
| $500,000 | $25,000 |
| $1,000,000 | $50,000 |
| $10,000,000 | $100,000 |
Ruhmkorff induction coil used to produce high-voltage pulses from a low-voltage direct current supply. This coil was the first type of electrical transformer used widely in x-ray machines, spark-gap radio transmitters, and arc lighting. Many were used in schools to demonstrate induction. Though its invention is credited to Heinrich Ruhmkorff (German, 1803-1877) it was only popularized by him and was actually invented by Nicholas Callan (Irish, 1799-1864).
With letter certifying the age of the object as being over 100 years old.
Height: 9 in x width: 18 1/4 in x depth: 9 1/4 in.
Please contact us for a detailed condition report. Please note that the lack of a condition statement does not imply perfect condition. Email condition@revereauctions.com with any condition questions.
With letter certifying the age of the object as being over 100 years old.
Height: 9 in x width: 18 1/4 in x depth: 9 1/4 in.
Condition
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