Power supply unit and ramping

[Rob]

Hello all!

First off, I would like to apologize if I'm in the wrong group. This
is my first time doing anything with electronics (and I'm not even
sure if it qualifies as electronics).

I learned that power supply unit "produces" electrical power.

Now suppose the power supply unit is on, and there is a reset button
on it. What happens if I reset it? If the current is constant, then I
guess nothing happens, right? Otherwise, the current is set to its
"default value". Am I right?

Now the reason I'm posting this is the following question: what is
ramping? What is a power supply unit with ramping capabilities?

If someone could explain it in a really simple way, I would greatly
appreciate it.

Thanks!

 

[Peter Bennett]

On Thu, 17 Dec 2009 04:20:13 -0800 (PST), Rob <tadej.slamic@gmail.com>
wrote:

Hello all!

First off, I would like to apologize if I'm in the wrong group. This
is my first time doing anything with electronics (and I'm not even
sure if it qualifies as electronics).

I learned that power supply unit "produces" electrical power.

Now suppose the power supply unit is on, and there is a reset button
on it. What happens if I reset it? If the current is constant, then I
guess nothing happens, right? Otherwise, the current is set to its
"default value". Am I right?

I don't think I've ever seen a reset button on a power supply.

The current delivered by a power supply will be determined by the
supply's voltage, and the characteristics (mainly resistance) of the
load.

Now the reason I'm posting this is the following question: what is
ramping? What is a power supply unit with ramping capabilities?

I expect that "ramping" means the supply has some means to control the
rise or fall of its output voltage as it is turned on or off.

If someone could explain it in a really simple way, I would greatly
appreciate it.

Thanks!

--
Peter Bennett, VE7CEI
peterbb4 (at) interchange.ubc.ca
GPS and NMEA info: http://vancouver-webpages.com/peter
Vancouver Power Squadron: http://vancouver.powersquadron.ca

 

[Jasen Betts]

On 2009-12-17, Rob <tadej.slamic@gmail.com> wrote:

First off, I would like to apologize if I'm in the wrong group. This
is my first time doing anything with electronics (and I'm not even
sure if it qualifies as electronics).

I learned that power supply unit "produces" electrical power.

Now suppose the power supply unit is on, and there is a reset button
on it. What happens if I reset it? If the current is constant, then I
guess nothing happens, right? Otherwise, the current is set to its
"default value". Am I right?

Now the reason I'm posting this is the following question: what is
ramping? What is a power supply unit with ramping capabilities?

ramping is a gradual change in value along a continuous scale.

your reset button could cause the ramp to restart, it could reset a
protective device, or do something different, it's a fairly vague term.

 

[Michael A. Terrell]

Peter Bennett wrote:

I don't think I've ever seen a reset button on a power supply.

Some cheap circuit breakers are labeled 'RESET', like those used on
outlet strips.


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