<div class="description">
Informational pamphlet discussing audion transformers suitable for use in the construction of amplifiers. The transformer described is said to amplify audio signals up to four hundred times. Describes the construction, materials, and technical specifications of the radio frequency and audio frequency type transformers. Illustrated throughout. Work is digitized in its entirety.</div>
1920<div style="display: none;">date QS:P571,+1920-00-00T00:00:00Z/9</div>
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<ul><li><a rel="nofollow" class="external text" href="https://digital.sciencehistory.org/works/30vlzrd">Record in source catalog</a></li>
<li>DPLA identifier: <a rel="nofollow" class="external text" href="https://dp.la/item/022a5dbbf76b973d45d1b5509060ffda">022a5dbbf76b973d45d1b5509060ffda</a></li>
<li>Science History Institute identifier: padig:SHI-30vlzrd</li></ul></span>