Guest review: Atten PPS3203T 3 channel 3A programmable power supply

in tools by DP | 2 comments

JuKu wrote about his latest purchase, the Atten PPS3203T 3 channel 3A programmable power supply. It features 2 0-32v channels and a single 0-6V channel, as well asRS-232 and GPIB (IEEE 488.2) interfaces.

I wanted an economical three output power supply (+- 15V or so for analog, 5V or 3.3V for digital) with voltage and current monitors an all outputs. You would think there are a lot of those, but the three monitors turned out to be a rare feature. I didn’t have much choice; I got an Atten PPS3203T and paid about 253€ + tax + shipping.

Read his mini review below.

  • There is a fan, but it is not too loud. There is a beeper and it is way too loud. It can be turned off, but the setting is not memorized, you have to do that every time.
  • The operation is easy enough, and there are more features than I need.
  • Voltage is specified as <0.05% + 10mV. My Extech EX330 is only 0.5%, and I measured a 0.4% error. The ripple is specified as <1mVrms, and my old Agilent is far noiser. In other words, it seems to be the most accurate unit on my bench. :)
  • The outputs are switched on with a relay, and there is bounce transient, about 2.5V. After that, the voltage ramps up cleanly (about 150us/V) with just a hint of overshoot. We’ll see if the transient is an issue on real designs; I can clean it up if needed but I hope I don’t need to.
  • I placed it n the side of my scope and it makes my Agilent screen wobble a bit. I’ll see if I need to rearrange the units on the shelf or live with it.
  • Conclusion: About the cheapest unit available that fills my spec. Not without quirks, but being cheap, I expected that. Overall: works as advertised and fills the need; I’m happy with my purchase (reliability to be determined).

Via the forum.

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  1. Les says:

    I use it from my PC with a custom application, and it works great. I love it.

  2. MaBl says:

    Les, do you have any documentation on the serial protocol? Quick googling did not yield any results.

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