Question: The circuit in Fig 21 18a is called a low pass filter
The circuit in Fig. 21.18a is called a low-pass filter because a large current and voltage (and thus a lot of power) are delivered to the load resistor (RL) only by a low-frequency source. The circuit in Fig. 21.18b is called a high-pass filter because a large current and voltage (and thus a lot of power) are delivered to the load only by a high-frequency source. Describe conceptually why the circuits have these characteristics.
Answer to relevant QuestionsAn ideal transformer is plugged into a 12-V, 60-Hz ac outlet in a motor home, thus enabling the owners to use a 1500-W, 120-V hair dryer. (Ignore any inductance or capacitance associated with the hair dryer.) (a) What type ...An ac voltage source has a peak voltage of 85 V and a frequency of 60 Hz. The voltage at t = 0 is zero. (a) If a student measures the voltage at t = 1/240s, how many possible results are there: (1) one, (2) two, or (3) ...The index of refraction in a certain precious transparent stone is 2.35. What is the speed of light in that stone? A beam of light in air is incident on the surface of a slab of fused quartz. Part of the beam is transmitted into the quartz at an angle of refraction of 30o relative to a normal to the surface, and part is reflected. What ...Alight ray in air is incident on a glass plate 10.0 cm thick at an angle of incidence of 40o. The glass has an index of refraction of 1.65. The emerging ray on the other side of the plate is parallel to the incident ray, but ...
Post your question