Friday, April 10, 2009

Electronic Prototype Power Supply

I have had great success bringing up new hardware with this small bench-top power supply from Lascar Electronics. The PSU 130 is inexpensive at under $90 US on or direct from the manufacturer (which gives quantity discounts). It is powerful enough to handle most electronic devices that I work on, and is small enough to fit underneath my computer monitor. The backlight is great for working in dim lighting and the large display is easy to read. I have unintentionally tested the short-circuit protection when I powered up a new prototype with a wiring mistake, and the supply suffered no damage. The only problem I have had is that one of the plastic tabs underneath the unit has broken, these are similar to what you find underneath most keyboards. This prevents me from easily raising it slightly for a better viewing angle (as shown in the picture). On the electrical side I have never had a problem. The current display is very useful working on prototypes, I can see when the SDRAM is initialized by the increase in current, I can see a short circuit condition and can easily measure power usage in different operating modes.

Lascar PSU 130 Power Supply

Link to a review on