Velleman-projects EDU06 Assembly instructions Instrukcja Użytkownika Pobierz pdf (Strona 13)

Now, check what happens when you ﬂ ip the switch from single phase to dual phase rectiﬁ cation.

Flip the switch back and forward, to clearly see the difference between both settings.

A little theory:

As you can see, the ‘interruptions’ we have noticed with single phase rectiﬁ cation are gone. As opposed

to single phase rectiﬁ cation, both halves of the sine wave are used. Instead of a single diode, we use 4

diodes to make a ‘diode bridge’

Single diode

Diode bridge

Exercise:

In experiment 3, we have learned how to measure the frequency of a repeating waveform.

Can you measure the period and frequency of both the single phase and dual phase rectiﬁ ed signal?

(Answer: 10ms/100Hz or 8.33ms/120Hz)

tt tt

UUUU

Rectiﬁ ed AC, dual phase

 

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 23 24

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Velleman-projects EDU06 Assembly instructions Instrukcja Użytkownika Strona 13