My speciality. Овчинникова Т.Е - 47 стр.

service is known as a rectifier, and some of the properties of rectifiers and associated
filter circuits will be considered in this article.
2. The simplest form of rectifier circuit is that shown in Figure 14 and the wave
form of the current in the load resistance is shown in Figure 15. The tube permits
current to flow when its plate is positive with respect to its cathode, but none flows
when the plate is at a negative potential. If voltage drop within the tube is neglected,
the current will consist of unidirectional pulses having the form of half sine waves,
and the average current throughout the cycle, or the D.C. component, will be l/π or
0.319 of the peak value. Since the peak anode current is limited for any particular
tube by the emitting power of the cathode, this relation determines the maximum
load current that can be supplied.
3. The maximum voltage across the tube occurs in the idle or nonconducting half
cycle, and its value is the same as the peak or crest value of the transformer secondary
voltage. This factor fixes the maximum load voltage that can be supplied by a given
tube.

        Notes to the text

rectified power supplies — выпрямители
unidirectional pulses — импульсы одного направления




Figure 14-The Simplest Form     Figure 15-The Wave Form of the Current
of Rectifier Circuit               in the Load Resistanse

      2.16.3 Translate the word-combinations

half wave rectifier, voltage drop, unidirectional pulses, half sine waves, average
current throughout the cycle, nonconducting half cycle, emitting power of the
cathode.

      2.16.4 Translate the words and the word-combinations into English

источник, постоянный ток, выпрямитель, свойство, сопротивление, по
отношению к, состоять из, средний ток, ограничивать, тот же самый.

      2.16.5 Answer the questions

1. What is one of the most important uses of the diodes? 2. When does the tube permit
current to flow? 3. When does the maximum voltage across the tube occur and what is
its value?