2006-11-07 03:48:14 · 5 answers · asked by himself202 1 in Science & Mathematics ➔ Engineering
Yes, you'll need a filter to get rid of the ripple. The voltage will be all in one polarity but will go from some peak to zero volts. You'll need a minimum of a capacitor in there if you want something close to a DC voltage.
2006-11-07 03:50:54 · answer #1 · answered by Gene 7 · 2⤊ 0⤋
A bridge diode rectifier makes an electrical waveform like a series of arches. A single diode makes the same waveform with every second arch missing. While some electrical applications are fine with power like this, many need the voltage to be made more continuous and a big electrolytic capacitor is the easiest way to do that. Some are more picky than that, and for these applications a voltage regulator is required.
2006-11-07 12:08:24 · answer #2 · answered by poorcocoboiboi 6 · 0⤊ 0⤋
It depends on the application. Even with a full wave bridge rectifier, there is "ripple" on the output. If you look at the output of the full wave rectifier, it will look like a series of humps. The capacitor smooths these humps out and makes the output much more consistent. Most output filters have a large electrolytic capacitor and a smaller disk capacitor in parallel. The Large capacitor filters out the 50 or 60 Hz, the smaller capacitor filters out higher frequency "noise."
2006-11-07 11:54:21 · answer #3 · answered by Jeff M 3 · 2⤊ 0⤋
Maybe. I believe the capacitor would be used to smooth out the voltage peaks and valleys. Whether you use a capacitor depends on how clean the output voltage has to be.
2006-11-07 11:53:38 · answer #4 · answered by DavidNH 6 · 0⤊ 0⤋
Unless you like pulsating DC. Which is actually ideal for charging batteries.
2006-11-07 11:57:27 · answer #5 · answered by Anonymous · 0⤊ 0⤋