l pad造句

• Tapped transformers are not L pads; they are autoformers.
• L pads can also be used at line level, mostly in pro applications.
• In high frequency horns, the L Pad is seen by the crossover, not the amp.
• Most monitor speakers include an L pad, a potentiometer ( knob ) for controlling the volume of the horn.
• L pads may not necessarily use continuously variable rheostats, but instead a multi-position rotating selector switch wired to resistors on the back.
• The L pad resistance of this rheostat increases, less power is coupled into the loudspeaker and the loudness of sound produced by the loudspeaker decreases.
• As shown, either side of the L pad can be the source or load, but the Z1 side must be the side with the higher impedance.
• An "'L pad "'is a network composed of two impedances that typically resemble the letter capital " L " when drawn on a schematic.
• As the first rheostat increases in resistance, the second rheostat decreases in resistance, keeping the load impedance ( presented at the input of the L pad ) constant.
• If a source and load are both resistive ( i . e . Z1 and Z2 have zero or very small imaginary part ) then a resistive L pad can be used to match them to each other.