crystal detector

Receivers could be made with a tuned circuit, a crystal detector, and a headphone.

It usually employs a sodium iodide crystal detector.

He experimented with crystal detectors, antennas, wave propagation, and noise suppression.

The crystal detector was the most successful of many detector devices that were used in the early days of radio.

The detector can be a crystal detector or a Schottky barrier diode.

Deringhouse saw the uninterrupted flickering on the projection surface of the crystal detectors.

High purity germanium single crystal detectors can precisely identify radiation sources-for example in airport security.

There are a number of advantages offered by using clover detectors as opposed to the more conventional single crystal detectors.

The coherer was replaced in receivers by the simpler and more sensitive crystal detector around 1907, and became obsolete.

A semiconductor crystal detector which extracts the audio signal (modulation) from the radio frequency carrier wave.

After about 1920, receivers using crystal detectors were largely superseded by the first amplifying receivers, which used vacuum tubes.

The crystal detectors, set for the characteristic emission wavelengths of plasma propulsion units, registered one flash of light after the other.

Instead of a crystal detector, a Fleming valve (tube diode) could be used; it was a stable detector, but not very sensitive.

On August 30, 1906 he filed a patent for a silicon crystal detector, which was granted on November 20, 1906.

Ordinary crystal detectors cannot demodulate continuous waves; the direct current (DC) signal is inaudible in headphones.

It gets its name from its most important component, known as a crystal detector, originally made with a piece of crystalline mineral such as galena.

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

Radio had been an exotic magic controlled by the military and a few geeky hobbyists experimenting with crystal detectors and coils.

Perhaps, though, they would develop Alexanderson alternators for sending, which are nothing but specially designed dynamos; and receive by crystal detectors.

Crystal detectors are used in crystal radio receivers and loop antennas used with many types of receivers.

Later, when AM radio transmission was developed to transmit sound, around World War I, crystal detectors proved able to receive this as well.

A crystal detector includes a crystal, a special thin wire that contacts the crystal and the stand that holds the components in place.

We have crystal detector radios of immense power, and we listen to your radio broadcasts and have learned your tongue.

The two Geiger-Müller tubes and the caesium iodide crystal detectors continued to operate normally until September 19, 1958.

Unlike a crystal detector or Fleming valve detector, the audion provided amplification of the signal as well as detection.