Transcription of Crystal Oscillator Reduces EMI from Computers
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Crystal Oscillator Reduces EMI from Computers
Crystal Oscillator Reduces EMI from Computers Spread Spectrum oscillators Released July 4th, 1997. Spread Spectrum oscillators Overview is shown in figure 1. The reduction in The rate of the modulation is above NEL announces the release of their amplitude is dependent on the 20 kHz to keep it inaudible and below Spread Spectrum HS-7800 line of harmonic number and the amount of 100 kHz so that phase locked loops Crystal controlled oscillators . These frequency deviation. with a tracking of 10 sec can use this oscillators are designed to reduce Figure 1 device as the source. radiated emissions by more than 10db. EMI reduction of 3 dB at 50 MHz The Oscillator is available in a standard and more than 10 dB of reduction on fourteen pin dip package using only the the higher harmonics are realized on four corner pins for ease during layouts. these units. All units are screened for This line of oscillators uses phase demodulated waveform and EMI.
2 Oscillator Reduces EMI from Computers July 4th, 1997 Figure 3 Oscillator Block Diagram NEL uses a series of noise suppression devices within this device to provide good noise immunity.
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