12V -> 4.8V linear dc/dc step down

[Hilbert]

Hello,


I need a 12V (car) to 4.8V DC power converter. Tight budget, low
energy consumption. Even though it's inefficient, a linear step down
converter would work.

I'm looking for a circuit design. Can anyone please help?


Thanks,
Hilbert

 

[John Popelish]

Hilbert wrote:

Hello,


I need a 12V (car) to 4.8V DC power converter. Tight budget, low
energy consumption. Even though it's inefficient, a linear step down
converter would work.

I'm looking for a circuit design. Can anyone please help?

You might build one based on the common-as-dirt LM317
adjustable linear regulator.

http://www.fairchildsemi.com/ds/LM/LM317.pdf

In addition to the normal capacitors, you should also
probably add an anti reverse connection, input series diode.

 

[John Fields]

On Wed, 12 Sep 2007 07:03:03 -0700, Hilbert <lists@panka.com> wrote:

Hello,


I need a 12V (car) to 4.8V DC power converter. Tight budget, low
energy consumption. Even though it's inefficient, a linear step down
converter would work.

I'm looking for a circuit design. Can anyone please help?

---
http://cache.national.com/ds/LM/LM117.pdf


--
JF

 

[BEN]

responding to
http://www.electrondepot.com/electronics/12v-4-8v-linear-dc-dc-step-down-65026-.htm
, BEN wrote:

lists wrote:
Hello,
I need a 12V (car) to 4.8V DC power converter. Tight budget, low
energy consumption. Even though it\'s inefficient, a linear step down
converter would work.

I\'m looking for a circuit design. Can anyone please help?

Can't you use a 12v to 5v converter that plugs into your cigarette lighter
socket in your car. mine has 2 usb sockets How much current do you need? I
use one to charge my ipad from the cigarette lighter receptacle.

 

[John Fields]

On Thu, 12 Jun 2014 03:19:03 +0000, BEN
<f6ceedb9c75b52f7fcc0a55cf0cfbf5d_984@example.com> wrote:

responding to
http://www.electrondepot.com/electronics/12v-4-8v-linear-dc-dc-step-down-65026-.htm
, BEN wrote:
lists wrote:
Hello,
I need a 12V (car) to 4.8V DC power converter. Tight budget, low
energy consumption. Even though it\'s inefficient, a linear step down
converter would work.

I\'m looking for a circuit design. Can anyone please help?


Can't you use a 12v to 5v converter that plugs into your cigarette lighter
socket in your car. mine has 2 usb sockets How much current do you need? I
use one to charge my ipad from the cigarette lighter receptacle.

---
Wow!

Only seven years late.