TENMA 72-13360 , dynamic mode

What edge time do you need for your tests?

Power supplies are typically specialised in keeping steady power. Their output capacity makes that they aren't fast voltage jumpers.

You may have to use a function generator with DC option for this research.

The user manual of the Tenma gives some indication of it's "get to voltage" speed:

Although that doesn't really shows how big of a voltage change it is. I assume here that's the time it maximum takes to reach the set voltage when enabling the output.

You may have made a mistake in choosing this power supply. It's cheap but very loosely specified. They give no data on rise and fall time for a change in demand.

Could you explain what waveforms you are trying to achieve and the purpose of them and maybe some kind of work around will be possible. Remember that the supply is a singe quadrant type (can only source current and not sink it) so the fall times with light loads will be poor.

Are you using remote control and the VSTEP command ?

MK

I am testing the boost converter , so i need to test my converter how it behaves when there is sudden change in its input supply , from 15-18V variation , 15-12V supply variation . I need to check for sudden change , (like a step change)for that purpose I brought this programmable Dc supply . So that i can programme it for step change Dc . 
I have tried accordingly what they have given in manual . But instead of step I am

getting Ramp kind of change in my input variation .

i tried to change from 20-30V 

and gave some slope and time value for M1 and M2 . And when run it , I can see only ramp change not sudden change . 
mam i wrong in giving slope values ??

I didn’t use remote control. What software is required for that ? 

You can control this power supply via PC serial port or network connection.

You can use any programming language you like but unless you have deep pockets you will need to write your own software.

There are code examples on the web using Python.

I don't have one of these power supplies so I can't experiment but I think you should be able to enter more steps.

The instructions in the user manual are very unclear - how do you set the time between steps ?

For a pulse such as you want I would expect more steps,

t0, 15V

t1, 15V  (t1 - 10) about 1 second

t2, 18V (t2 - t1) as short a time as possible.

t3, 18V(t3 - t2) about 1 second

t4, 15V (t4 - t3) as short a time as possible)

and so on

But typically power supplies like this will not be fast enough to test your booster properly.

You can learn a great deal about your booster supply by applying fast load steps which are much easier to manage.

The other key tool is simulation - if you simulate the booster and compare the simulated load response with reality and get a good match, then you can be fairly confident that the simulation will also be good for an input step.

I have never tested a booster for fast input steps - difficult conditions (like engine cranking across a car 12V supply) have big voltage swings but low rates of change. If you have a decent sized input capacitor (not always possible) then fast step changes on the input don't happen. Special testers are available to apply fast input pulses and transients but it is usual to hire them rather than buy if you have a tight budget.

Good luck.

MK

By using manual 

Iam first setting M1=20V

the. Pressing knob giving slope value =20

time 3seconds

and closing M1

and now Turning on M2 

giving M2 =30V 

pressing knob giving slope value =20

time 3 seconds 

Then dynamic number =5

step number =2 

this is how Iam giving 

my doubt is what should be the slope value and time value to be given .

To get step change 

What happens if you set the slope value to 0 or 1 ?

MK