HIGH VOLTAGE TEST 1
Mnqobi Nzama ( 219062895)
Question 1
Where:
• Vin is the AC source
• C1 and C2 are capacitors
• D1 and D2 are the diodes
• Rload is the load resistor.
2. A Voltage Doubler is a voltage multiplier circuit which has a voltage multiplication factor of
two. The circuit consists of only two diodes D1 and D2, two capacitors C1 and C2, and an
oscillating AC input voltage. This diode-capacitor pump circuit gives a DC output voltage equal to
the peak-to-peak value of the sinusoidal input.
• When operating, during the negative half cycle of the sinusoidal input waveform, D1 is
forward biased and conducts charging up the pump capacitor, C1 to the peak value of the
input voltage, (Vp). Since there is no return path for C1 to discharge into, thus, it remains
fully charged and acts as a storage device in series with the voltage supply. At the same
time, D2 conducts via D1 and charging up C2.
• During the positive half cycle, D1 is reverse biased blocking the discharging of C1 while
D2 is forward biased charging up C2. But since there is a voltage across C1 already equal
