The Hspice simulation results show that the typical ripple voltage is 10mV,and the typical quiescent current is only 56.7 μA,but quiescent current is less than 0.01 μA in standby mode,efficiency achieves up to 90% at 1mA when power supply is 3.6 V and temperature is 25 ℃,which imply it has an advantage of low power dissipation,low ripple voltage and high efficiency.
The arrangement with 50 mm working distance at the 10 mm×10 mm deflection field with 0.005 rad aperture and 5×10 -5 beam voltage ripple produces a total aberration disk of 0.03 μm before dynamic correction.
From the simulated results,the stability of the designed monolithic Buck converter with different input voltage or different load is well,the line regulation is-40 dB and the load regulation is-60 dB.The average output voltage ripple of 75 mV and the power efficiency of 71% are achieved.
System control mode is simple,using input current limiting technique to keep output voltage ripple below 50 mV,adopting multi-topology switch-capacitor array and gain hopping to obtain the average efficiency above 60% and peak efficiency above 85%.
It introduces the operational principle and main characteristics of NCP1205.NCP1205 is applied to the interleaving paralleled backward circuit to reduce the switch tube power loss and output voltage ripple,to enhense the circuit efficiency.
We deal with the maximum Gibbs ripple of the sampling wavelet series of a discontinuous function f at a point t ∈R, for all possible values of a satisfyingf(t)=αf(t-0)+(1-a)f(t+0).
However, a ripple current occurs in the inactive phase due to the diode freewheeling during the non-commutation period in the traditional pulse width modulation (PWM) methods, which aggravates the torque ripples.
As a result, the torque ripple is suppressed using the proposed method.
Thrust ripple optimization and experiment for a permanent magnet linear synchronous motor
Thrust ripple such as end force, slot force and normal force are key factors that affect the properties of permanent magnet linear synchronous motors (PMLSM).
Analysis of DC output voltage ripple in an electromagnetic doubly salient brushless DC generator
The influence of the exciting current and armature reaction on the DC voltage ripple of the generator is discussed in detail, and the nonlinear rules are gained that DC voltage ripple changes accordingly.
Consequently, it can provide a steady DC output voltage with a low voltage ripple, approximately unitary input power factor and 2.5 kW output power.
If a fast voltage compensator is applied to control the DC output voltage, the DC output voltage ripple, pulsating at twice the grid frequency, causes a third harmonic of considerable magnitude in the line current.
It has been generally expected that, as X-ray tube-voltage ripple increases, the X-ray spectrum shifts to the low photon-energy side, and therefore the mean energy decreases, i.e.