An inexpensive voice relay for use with the electronic chronoscope.

Citation

Hamburger, F., Jr. (1939). An inexpensive voice relay for use with the electronic chronoscope. Journal of Experimental Psychology, 25(3), 319-322.

http://dx.doi.org/10.1037/h0059705

Abstract

Detailed descriptions of all components, with wiring diagrams, are given. (PsycINFO Database Record (c) 2016 APA, all rights reserved)