Image: Potentiometer cutaway drawing

Description: Drawing of a potentiometer (variable resistor) with the case cut away, showing internal parts, from an advertisement in an electronics magazine. The labeled parts are A. Shaft B. Stationary carbon composition resistance element C. Springy phosphor bronze wiper that rides along resistance element D. Shaft attached to wiper E, G Terminals connected to ends of resistance element F. Terminal connected to wiper H. Cam that operates on-off switch, if one is included in potentiometer Alterations to image: cloned out advertising copy, added arrows and labels
Title: Potentiometer cutaway drawing
Credit: Retrieved December 1, 2015 from Electronics magazine, McGraw-Hill Publishing Co., New York, Vol. 8, No. 11, November 1935, p. 80 on http://www.americanradiohistory.com
Author: Original work: Unknown Altered work: Chetvorno
Permission: This image is from an advertisement without a copyright notice published in a 1935 US magazine. In the United States, advertisements published in collective works (magazines and newspapers) are not covered by the copyright notice for the entire collective work. (See U.S. Copyright Office Circular 3, "Copyright Notice", page 3, "Contributions to Collective Works".) Since the advertisement was published before 1978 without a copyright notice, it falls into the public domain.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No