Ads
related to: 24mhz crystal oscillatoroctopart.com has been visited by 100K+ users in the past month
radwell.com has been visited by 100K+ users in the past month
Search results
Results from the WOW.Com Content Network
A crystal oscillator is an electronic oscillator circuit that uses a piezoelectric crystal as a frequency-selective element. [1] [2] [3] The oscillator frequency is often used to keep track of time, as in quartz wristwatches, to provide a stable clock signal for digital integrated circuits, and to stabilize frequencies for radio transmitters and receivers.
Crystal oscillators can be manufactured for oscillation over a wide range of frequencies, from a few kilohertz up to several hundred megahertz.Many applications call for a crystal oscillator frequency conveniently related to some other desired frequency, so hundreds of standard crystal frequencies are made in large quantities and stocked by electronics distributors.
The total capacitance seen from the crystal looking into the rest of the circuit is called the "load capacitance". When a manufacturer makes a "parallel" crystal, a technician uses a Pierce oscillator with a particular fixed load capacitance (often 18 or 20 pF) while trimming the crystal to oscillate at exactly the frequency written on its package.
An electrical oscillator was first used to sustain the motion of a tuning fork by the British physicist William Eccles in 1919; [33] his achievement removed much of the damping associated with mechanical devices and maximised the stability of the vibration's frequency. [33] The first quartz crystal oscillator was built by Walter G. Cady in 1921.
A GPS disciplined oscillator unit with a GPS antenna input, 10 MHz and 1 pulse-per-second (PPS) outputs, and an RS-232 interface.. A GPS clock, or GPS disciplined oscillator (GPSDO), is a combination of a GPS receiver and a high-quality, stable oscillator such as a quartz or rubidium oscillator whose output is controlled to agree with the signals broadcast by GPS or other GNSS satellites.
The frequency of the oscillator can be "pulled" in wider range than with high-Q crystal. This allows wider range of adjustments, which may be critical in devices operating in extreme (especially low) temperatures where the crystal's own temperature-frequency dependence could take it outside of the pullable range for the desired frequency.
Ads
related to: 24mhz crystal oscillatoroctopart.com has been visited by 100K+ users in the past month
radwell.com has been visited by 100K+ users in the past month