Definition of RIDDANCE. 1. : an act of ridding. 2. : deliverance, relief âoften used in the phrase good riddance especially to express relief that someone or something has gone.See riddance defined for English-language learners.See riddance defined for kids. ADVERTISEMENT.. : an act of ridding. 2. : deliverance, relief âoften used in the phrase good riddance especially to express relief that someone or something has gone. See riddance defined for English-language learners.
Introduction to Pulse Width Modulation. A look at a powerful technique for controlling analog circuits with a microprocessor's digital outputs. Pulse width modulation (PWM) is a powerful technique for controlling analog circuits with a microprocessor's digital outputs. PWM is employed in a wide variety of applications, ranging from measurement and communications to power control and conversion.
The expression dBm is used to define signal strength in wires and cables at RF and AF frequencies. The symbol is an abbreviation for decibels relative to one milliwatt, where one milliwatt (1 mW) equals 1/1000 of a watt (0.001 W or 10 -3 W). This unit is commonly used in test laboratories. The dBm increment is based on the decibel , a logarithm ic measure of relative power . Suppose a signal has a power level of P mW. Then the signal strength in dBm, symbolized S dBm , is: S dBm = 10 log 10 P. A 1-mW signal has a level of 0 dBm.