Friday, 3 May 2024, 2:54 PM
Site: edulabs.org academy
Course: Activity Examples (Activity Examples)
Glossary: Electronics (Mike Jaroch)
D
DUMMY ANTENNASee DUMMY LOAD [16]. |
DUMMY LOADA dissipative but nonradiating device that has the impedance characteristics of an antenna or transmission line. Also called ARTIFICIAL LOAD [11] [16] [17]. |
DUPLEXERA radar device that switches the antenna from the transmitter to the receiver and vice versa [18]. |
DUTY CYCLEIn a transmitter, ratio of time on to time off [12] [18]. |
DYNAMIC MICROPHONEA device in which sound waves move a coil of fine wire that is mounted on the back of a diaphragm and located in the magnetic field of a permanent magnet [12]. |