Sprague Electric
American electrotechnical company
Sprague Electric Company was an electronic component maker founded by Robert C. Sprague in 1926. It was best known for making a large line of capacitors used in a wide variety of electrical and electronic in commercial, industrial and military/space applications. Other products include resistive components, magnetic components (transformers and coils), filter assemblies, semiconductors and integrated circuits.
History overview
In 1926, Sprague used $25,000 of his savings to open Sprague Specialties Company at his home in Quincy, MA. One of his first products was the mini condenser, an old name for capacitor. Mini condensers were commonly used in radio applications for noise filtering, signal coupling and tone controls. Early capacitors were two pieces of metal foil wrapped between wax paper or any other type of suitable insulation material. The type of insulating material determined the capacitor's capacitance and maximum voltage. Capacitors are also useful in high power applications like motors, and soon Sprague turned his attention those areas as well.
Sprague found a sustainable product line in capacitors. The increase in the types of radios using AC created demand for many different types of capacitors.
This brief starts where responsible research should: with the source description of “Sprague Electric” as american electrotechnical company. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the history & society register because the source frames it as american electrotechnical company. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Chronology, provenance and viewpoint should be read together before a broad social or political interpretation is accepted. The source revision retrieved here is dated Aug 23, 2026. The linked authority identifier is Q48976529. Authority coordinates are 42.701, -73.116. 1 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1926.
Institutional narratives can privilege the records that survived while minimizing voices that were never formally collected. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Compare institutional narratives with records created by participants and affected communities. Dates and formal titles are useful anchors, but not substitutes for context.
- Event chronology
- Institutional context
- Locating named record creators
Contemporary correspondence, government or organizational records, oral histories and cited historical scholarship.
Three-step research path
- Establish the record: confirm the title “Sprague Electric”, its source revision and the description used here.
- Expand the search: follow Sprague Electric primary sources, Sprague Electric archive and Sprague research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Sprague Electric”?
- What chronology connects this entry to wider political or social change?
- Who created the surviving record, and for what administrative purpose?
Search terms from this dossier
This entry incorporates text from “Sprague Electric” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.