A type of inverter which takes the DC current from the rectifier and switches it on and off very quickly, approximating a sine wave.
A powerful technique for controlling analog circuits with a processor's digital outputs. PWM is employed in a wide variety of applications, including high power switching amplifiers. By controlling analog circuits digitally, system costs and power consumption can be drastically reduced.
A type of chopped DC power where the width of the pulse is varied to control the average voltage (see "chopped DC power").
1. A PWM controller (amplifier) switches DC supply voltage on and off at fixed frequencies. The length of the on/off interval or voltage waveform is variable. 2. Pulse width modulation (PWM), describes a switch-mode (as opposed to linear) control technique used in amplifiers and drivers to control motor voltage and current. PWM offers greatly improved efficiency compared to linear techniques.
( PWM) - A signal with a fixed pulse width (frequency), which is turned on for part of the pulse. The percent of time that the signal is on is called its duty cycle. PWM is used to control voltage (and consequently current) to fuel injectors.
A regulation method based on Duty Cycle. At full power, a pulse-width-modulated circuit provides electricity 100 percent of the time. At half power, the PWM is on half the time and off half the time. The speed of this alternation is generally very fast. Used in both solar wind regulators to efficiently provide regulation.
A switching power conversion technique where the on-line (or width) of a duty cycle is modulated to control power transfer for regulating power supply outputs.
A modulation which encodes an analog signal into variable-length digital pulses.
An output in the form of duty cycle which varies as a function of the applied measurand.
The process of modulating a pulse train by varying the pulse width proportionately to the modulating signal. Typically refers to a Pulse Width Modulated (PWM) UPS output waveform in battery mode. Usually implies less than a true sine wave output with THD levels around 20%. See PWM sine wave.
is a four-layer (n-p-n-p) device with an MOS-gated channel connecting the two n-type regions. In the normal mode of operation, a positive voltage is applied to the anode (A) relative to the cathode (K).