Power supply for Buck dc-dc

[[email protected]]

Hi,
Please, could I use a half-bridge diode circuit to power this buck power supply ?
http://www.ebay.com/itm/ZXY6005-DC-...203?pt=LH_DefaultDomain_0&hash=item2c639b54d3

This power supply accepts 62VDC input, so if I use one rectifier diode to rectify
120Vac home's power (decay to ~ 54Vdc), it will work ?

120Vac -> 1 rectifier diode -> 54Vdc -> Buck DC-DC power supply.
Thanks.

 

[[email protected]]

Oi. Wrong in so many ways. Where should we start?



The short answer is, given what you know, don't even try. Learn more

about electronics first, then start playing with power from the wall when

you're not going to kill yourself, burn your house down, or shock your

kids silly.



If you don't understand why you can't connect your equipment straight to

the wall power without isolation, then you need to learn more about

electronics and about how houses are wired for power before you can

safely proceed to play with 120V. While it isn't always instantly

LETHAL!!!, getting a shock from 120V always hurts a lot, it _can_ kill

you on a bad day, and there's a lot of ways that you can build your

equipment so that it doesn't kill you or your loved ones, but still burns

down your house.



Get yourself a copy of the ARRL manual. They've got whole chapters in

there on power supply design, electric safety, how houses in North

America are wired, and all that useful stuff. Then READ IT. If you

don't feel you understand what it says, don't mess around with 120V --

just find a wall-wart that delivers what you need, and be happy.



--

My liberal friends think I'm a conservative kook.

My conservative friends think I'm a liberal kook.

Why am I not happy that they have found common ground?



Tim Wescott, Communications, Control, Circuits & Software

http://www.wescottdesign.com

Yesterday I took my digital multimeter, insert a 1N4007 diode in power's home, and I got 52Vdc from that !

 

[[email protected]]

Hi,

Please, could I use a half-bridge diode circuit to power this buck power supply ?

http://www.ebay.com/itm/ZXY6005-DC-...203?pt=LH_DefaultDomain_0&hash=item2c639b54d3



This power supply accepts 62VDC input, so if I use one rectifier diode to rectify

120Vac home's power (decay to ~ 54Vdc), it will work ?



120Vac -> 1 rectifier diode -> 54Vdc -> Buck DC-DC power supply.

Thanks.

Is there any way to bypass transformer´s usage to power this buck ?
It´s only for school work, not for real usage...

 

[George Herold]

Yesterday I took my digital multimeter, insert a 1N4007 diode in power's home, and I got 52Vdc from that !- Hide quoted text -

- Show quoted text -

That makes no sense to me. Have you been zapped by 120 Vac yet?
Keep one hand in your pocket.
You can buy a nice linear power supply from Mastek ~50V @3A for a bit
more than $100.

George H.

 

[[email protected]]

Hi, Please, could I use a half-bridge diode circuit to power this buck power supply ? http://www.ebay.com/itm/ZXY6005-DC-...203?pt=LH_DefaultDomain_0&hash=item2c639b54d3 This power supply accepts 62VDC input, so if I use one rectifier diode to rectify 120Vac home's power (decay to ~ 54Vdc), it will work ?120Vac -> 1 rectifier diode -> 54Vdc -> Buck DC-DC power supply. Thanks.

And what about this ?
Vrms=Vpeak/2
Vdc=Vpeak/Pi
http://en.wikipedia.org/wiki/Rectifier

 

[[email protected]]

That makes no sense to me. Have you been zapped by 120 Vac yet?
Keep one hand in your pocket.

*BACK* pocket.

You can buy a nice linear power supply from Mastek ~50V @3A for a bit
more than $100.

Wall warts are cheaper and even safer. 5V@2A, or so, won't get a newb
in too much trouble and will be quite useful while learning.

 

[josephkk]

Hi,
Please, could I use a half-bridge diode circuit to power this buck powersupply ?
http://www.ebay.com/itm/ZXY6005-DC-...203?pt=LH_DefaultDomain_0&hash=item2c639b54d3

This power supply accepts 62VDC input, so if I use one rectifier diode to rectify
120Vac home's power (decay to ~ 54Vdc), it will work ?

120Vac -> 1 rectifier diode -> 54Vdc -> Buck DC-DC power supply.
Thanks.

No! Unsafe. You will destroy the power supply. It may burn up or
explode. It may maim or kill you.

Is this clear enough?

Tim warned you off, you are not fit to make a guess on this.

 

[Phil Allison]

"josephkook"

No! Unsafe. You will destroy the power supply. It may burn up or
explode. It may maim or kill you.

Is this clear enough?

Tim warned you off, you are not fit to make a guess on this.


** And I warned him of the same, a full THREE hours earlier.

All you are is very a late echo and bad fart smell.

**** head.



..... Phil

 

[JW]

"josephkook"

No! Unsafe. You will destroy the power supply. It may burn up or
explode. It may maim or kill you.

Is this clear enough?

Tim warned you off, you are not fit to make a guess on this.


** And I warned him of the same, a full THREE hours earlier.

All you are is very a late echo and bad fart smell.

**** head.

I know time flies when we're having fun, but it was actually five days
ago.

 

[Phil Allison]

"JW"

"Phil Allison"

I know time flies when we're having fun, but it was actually five days
ago.

** Huh ???

I replied to the OP within 12 minutes, Tim came along 3 hours later.

You totally stupid ?


.... Phil