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TTi MX100TP triple power supply teardown and review

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andidegn:
Just a small correction. I have the MX180TP and ch 3 has 2 modes, 5.5v 3a and 12v 1.5a. Still not a high power output, but still manageable for most +- 12v operations.
I love this supply. It does everything I need it to and a lot more. I was looking at the 832 as well, but seeing as I could get this one on offer for only a little more, I went with this one.
I'm very impressed with it in almost all aspects. Only downside, for me, is that the sense inputs are horrible to use and the hole in the banana terminals (for bare wire) are waaay too small.
But overall, I'm very pleased with it.. :)

skYfIrE:
Hi Folks,

I was thinking about purchase a "new generation" power supply with a popular Siglent : https://www.eevblog.com/forum/testgear/siglent-spd3303x-e-binding-post-issues-solved/25/ but a terminal issue (commented by an eeV member) has definitly confirmed this device was not for me.
After several searches, I've found this thread and this TTi PS looks pretty sexy. I don't need more than 1A but I'll have to program voltage ramp. Anyone has an example of programing ? Is this MX100TP limited to 50 steps for a voltage ramp ? Or this MX100TP has 50 memory slots to store different programing ? Usually this kind of device can be programmed thanks to an excel sheet ? I've read the manual but I can't clearly understand how the programing section works :-[

MarkL:
The MX100TP has 50 locations for stored setups per channel, plus an additional 50 setups that affect all 3 channels simultaneously.  That's just setups and not step control.

You can also program the sequence and delays to specify how the channels turn on, but that's about it.

If you want to program a ramp, it would have to be remotely controlled with a computer through one of the supported interfaces.  And the remote interfaces are only available on the "P" version, which is extra.

I've programmed ramps and it works fine.  The only non-obvious thing is that when you're changing the voltage, you need wait until the output capacitor charges up before reading back the voltage and/or current.  There could be non-trivial delay if the current limit is set low.


I purchased the MX180TP earlier this year for a specific project, so now I have both models.  They both continue to perform well and no regrets with either purchase.  As a general comment after using both, if you don't need the extra current output of the MX180TP, I would stick with the MX100TP since it has more precision, and more flexible combinations for output voltages and currents.  I still tend to use the MX100TP more often.

LaurentR:
The Rigol DP800 doesn't exactly have a direct ramp function, but it has programming steps (2048 I think) and it allows you to fill the steps with a function from the front panel. So you can ask for a ramp (or pulse or sine or a few other ones) and it will fill the steps for you.
IIRC, the steps last an integer number of seconds, so whatever ramp you do will be slow.

skYfIrE:
Hi MarkL,
MX100TP Power Supply covers all my needs. So you've remoted this PS thanks to a computer, but how did you proceed ? I mean by software. Did you use an excel sheet ? Maybe could you show a printscreen ?

Extra question about terminals : here is the drawing in mm of my terminals, do you think I'll meet troubles with them ?


Hi LaurentR,
Maybe Rigol makes a good DP800 PS but I prefer the hardware interface from TTi, maybe because I've always used TTi PS.

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