Notes, summaries, assignments, exams, and exercises for Electronics for Vocational training

Transformer Primaries in Power Supplies

In a transformer power supply, how many primaries do we find? In a transformer, we can only find one primary, through which energy is applied from the network.

Linear Power Supply Schematic and Operation

The linear power supply schematic functions as follows: the voltage grid passes through a transformer that adapts the level of the network signal to the voltage needed to power the circuit. Both input and output are AC voltages. The signal then passes through a rectifier, which converts the alternating voltage into a pulsating type. Next, it goes through a filter charged with reducing the variations in the output voltage of the rectifier, so the signal adopts a more or less stable form. Finally, it passes...

FIRST INTRODUCTION TO PROGRAM EVALUATION

I. - determines the outcome of the following algorithms.

Exercise A: Observe the following sequence of instructions:

1.Leer (A)
2.I (B)
3.I (C)
4.D = (A == B)
5.E = (A <> B)
6.F = (MOD (B / A)> = C)

Now answer the following questions: Suppose the user enters 3 in A, 4 B and 5 C

a) What value contains D after the fourth instruction?
b) What value contains E after the fifth instruction?
c) What value contains F after the sixth instruction?
d) What are A, B and C after the last statement?

Exercise B: Observe the following sequence of instructions:

1.Leer (A)
2.Result = 1
3.Mientras (A> 1)
4.Resultado = result * A
5.A = A - 1
6.Fin while
7.Imprimir (result)

Now answer the following...