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amplifiers
The proposed digital controller is implemented with a TMS320C32 DSP, including a series of parallel digital band-pass filters, phase shifters and amplifiers.
      
The output power of the signals is 10 and 75 W, respectively; the gain of the channel amplifiers is 40 dB; and the amplified signals are the video and audio signals of the TV channel 12.
      
A power amplifier is described in which, in order to combine the powers of channel amplifiers, directional couplers are used that are based on helical transmission lines placed in a cylindrical shield.
      
It is shown that the correct adjustment of the phase shifts of the clock signals of the lock-in amplifiers can considerably reduce the effect of the instability of the photon-coupled pair signal on the result of measurements.
      
A bandpass power amplifier is described in which ring combiners (adders) designed from lumped components are used for combining the powers of channel amplifiers.
      
The enhanced characteristics of the oscillators and amplifiers using this cavity as an oscillatory system are presented.
      
The most powerful effect of the above factors is exerted on X-ray spectra recorded by such electromagnetic equipment as CCD-based detectors, photoelectron amplifiers, etc.
      
Frequency-response equalization in integrated current amplifiers with collector-base cross coupling
      
It is shown that monolithic current amplifiers with collector-base cross coupling can ensure a single-stage amplification up to 40 dB in the frequency range from 0 to 0.1fc (wherefc is the cutoff frequency of the transistors).
      
Predicting the Effect of Pulsed Ionizing Radiation on Operational Amplifiers
      
The response of IC operational amplifiers (op amps) to pulsed ionizing irradiation is studied theoretically and experimentally.
      
Performance data on specific front ends and their individual units are given with emphasis on low-noise amplifiers, mixers, and voltage-controlled local oscillators.
      
Two developed setups are compared, one of which is characterized by high reliability, sufficient sensitivity to crack generation, and the absence of electronic amplifiers and power supply units.
      
The signal is received by high-sensitivity seismic sensors, amplified by low-noise amplifiers, supplied to a 16-channel A/D converter, and displayed on the computer monitor.
      
Detection of weak and extremely weak light signals amplified by linear and four-wave mixing laser amplifiers is analyzed.
      
Signal-to-noise ratios are calculated and analyzed for preamplification schemes using linear and four-wave mixing amplifiers.
      
The results of the numerical simulation of these complexes in the model of surface emitting lasers or laser amplifiers with saturated amplification and absorption are presented.
      
The nematic liquid crystal is characterized by the anisotropy of optical properties, including the amplification coefficient, which opens the possibility of creating amplifiers controlled by a low electric field.
      
The effects are induced by the excitation of charge-transfer states of the fullerene nanoclusters, which makes the latter act as amplifiers of local electric fields.
      
Correction of wavefront distortions and depolarization in solid-state laser amplifiers
      
 

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