1N4007 Diode Problem

[Alaxleia]

Hello,
I meet a question. How can I make a 220V AC to 220V DC rectifier using a 1N4007 diode that can deliver 15 amps of current?
if you can help me? Many thanks

 

[Deleted member 46664]

Hello,
I meet a question. How can I make a 220V AC to 220V DC rectifier using a 1N4007 diode that can deliver 15 amps of current?
if you can help me? Many thanks

You can't. The 1n4007 diode is only rated for 1 amp of current. Trying to pull 15 amps through it will amount to instant failure.

Data sheet attached.

 

[Blumlein 88]

Lots of 15 amp rectifiers are inexpensive. Many will be rated for 400 volts or 600 volts, but will be fine with only 220 volts on them.

EDITED: to make it clear, no the 1n4007 diode is a one amp diode and can't be used for 15 amps. You'll need a different diode for that amperage.

 

[Deleted member 46664]

Lots of 15 amp rectifiers are inexpensive. Many will be rated for 400 volts or 600 volts, but will be fine with only 220 volts on them.

Yep, plenty of them ... but the 1N4007 isn't one of them.

 

[wwenze]

15 amp you should be looking at something shaped like this at a minimum

 

[freemansteve]

Rather than picking a diode or rectifier, the place to start is to define the problem that needs solving!

 

[Deleted member 46664]

Rather than picking a diode or rectifier, the place to start is to define the problem that needs solving!

It sounded like a homework question to me ... But you are correct.

 

[DVDdoug]

The peak of an AC wave is about 1.7 times RMS and a capacitor will charge-up the peak so, 220V RMS rectified & filtered to regular "smooth" DC is about 375VDC

Full-wave rectified (with a bridge rectifier) and unfiltered is still 220V RMS (a regular incandescent light bulb will light-up to the same brightness, minus the slight voltage-drop across the diode).

Half-wave rectified and unfiltered is 110V RMS (a 110V light bulb will light-up normally with its rated wattage or a 220V light bulb will get 1/4 of its normal wattage).

 

[egellings]

Don't try paralleling a bunch of 1N4007's to get the current capability up. One will hog the current and pop, and this could end up in a cascade of popped diodes.

 

[freemansteve]

Half-wave rectified and unfiltered is 110V RMS (a 110V light bulb will light-up normally with its rated wattage

It won't be as bright as 110V normal AC - there is surely a 50% duty cycle/energy transfer issue with half wave for a bulb.

 

[solderdude]

Hello,
I meet a question. How can I make a 220V AC to 220V DC rectifier using a 1N4007 diode that can deliver 15 amps of current?
if you can help me? Many thanks

You can't.
Not only because that diode can not handle currents above 1A but when rectifying 220V AC you will end up with 310V DC.

You will need a 3.5kW 220V DC output AC-DC converter.
So either a 3.5kW transformer with 160V AC output and a bridge rectifier that can handle 15A continuous and you will also need a bunch of 400V DC capacitors and if you need to pull 15A they would have to be substantial in capacitance as well.

Can I ask what that 220V DC would be needed for and why it would need to handle 15A ?
I can't see any practical applications for 220V DC

 

[Waxx]

First like said, use a bridge rectifier (something like this) that can handle that voltage and current, and put a voltage regulator after (with it to bring the voltage down to the one you want. And i hope you don't want to do this kind of power with a linear psu, this should be an smps and on that kind of voltage and current it's not easy to make.

 

[iMickey503]

Use a lot of them in series and parallel and Pray for the best?
If they get hot? Just dunk them in water. What could go wrong?

 

[raindance]

Use a lot of them in series and parallel and Pray for the best?
If they get hot? Just dunk them in water. What could go wrong?

You can't parallel diodes. One will conduct and the rest won't. They refuse to share. Just like people.

 

[Sgt. Ear Ache]

OP is some sort of scammer

 

[iMickey503]

You can't parallel diodes. One will conduct and the rest won't. They refuse to share. Just like people.

But how do LED's work in series?

 

[solderdude]

You can't parallel diodes. One will conduct and the rest won't. They refuse to share. Just like people.

Add a small resistor in series with each diode and you can...

 

[raindance]

But how do LED's work in series?

I can't answer your question because you changed the subject...

 

[Kijanki]

The peak of an AC wave is about 1.7 times RMS and a capacitor will charge-up the peak so, 220V RMS rectified & filtered to regular "smooth" DC is about 375VDC

Full-wave rectified (with a bridge rectifier) and unfiltered is still 220V RMS (a regular incandescent light bulb will light-up to the same brightness, minus the slight voltage-drop across the diode).

Half-wave rectified and unfiltered is 110V RMS (a 110V light bulb will light-up normally with its rated wattage or a 220V light bulb will get 1/4 of its normal wattage).

Peak will be at 1.41 of rms value, since Vrms=0.707Vp. For 220V sinewave it will be 310V

 

[raindance]

Add a small resistor in series with each diode and you can...

Unfortunately it doesn't work with people.