क्रिस्टल-डिटेक्टर हिंदी उपयोग और उदाहरण

""1930 के दशक के मध्य में बेल प्रयोगशाला के शोधकर्ताओं ने पाया कि क्रिस्टल डिटेक्टर का उपयोग माइक्रोवेव प्रौद्योगिकी में किया जा सकता है।

क्रिस्टल-डिटेक्टर इसके अंग्रेजी अर्थ का उदाहरण

It was further developed by Guglielmo Marconi, then replaced about 1907 by crystal detectors.

He also introduced the use of semiconductor junctions to detect radio waves, when he patented the radio crystal detector in 1901.

21st-century film awards A crystal detector is an electronic component used in some early 20th century radio receivers that consists of a piece of crystalline mineral which rectifies the alternating current radio signal and was employed as a detector (demodulator) to extract the audio modulation to produce the sound in the earphones.

Bose first patented a crystal detector in 1901.

The crystal detector was developed into a practical radio component mainly by G.

The unamplified radio receivers that used crystal detectors were called crystal radios.

This graph shows the current through the crystal detector which is applied to the earphone and bypass capacitor.

In addition to its main use in crystal radios, crystal detectors were also used as radio wave detectors in scientific experiments, in which the DC output current of the detector was registered by a sensitive galvanometer, and in test instruments such as wavemeters used to calibrate the frequency of radio transmitters.

The crystal detector consisted of an electrical contact between the surface of a semiconducting crystalline mineral and either a metal or another crystal.

Since at the time they were developed no one knew how they worked, crystal detectors evolved by trial and error.

Below are the major categories of crystal detectors used during the early 20th century:.

Patented by Karl Ferdinand Braun and Greenleaf Whittier Pickard in 1906, this was the most common type of crystal detector, mainly used with galena but also other crystals.

Patented and first manufactured in 1906 by Pickard, this was the first type of crystal detector to be commercially produced.

Crystal-to-crystal detectors.