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> Lambda lqd-421 dual power supply 0-20V 1.7A nice unit
Lambda lqd-421 dual power supply 0-20V 1.7A nice unit
LAMBDA LQD-421 DUAL DIGITAL POWER SUPPLY
- FROM MY PERSONAL LAB BENCH -
EACH SIDE IS 0-20V 0-1.7A WITH SEPARATE DIGITAL READOUT
PUT THEM IN SERIES AND HAVE A GREAT 0-40V SUPPLY FOR YOUR EXPERIMENTS
PUT THEM IN PARALLEL AND HAVE A GREAT 0-20V SUPPLY WITH ALMOST 4A OUTPUT
(SEE MANUAL FOR ALL CONFIGURATION OPTIONS)
EXCELLENT "VIRTUALLY UNUSED" CONDITION - SEE PHOTOS
I tested this unit at full load (not pictured) and measured under .2mV ripple on each channel. What is pictured here is the supplies running at 20V into 20 ohms i.e. 1A current, 20W per side. If you look closely at the multimeter you will see that the meters are pretty well calibrated and both supplies are working very well. The regulation is excellent, and the ripple is under .2mV per side as displayed on the meter. Again, this is running at 1A and 20V per side.
Over the last two years, I have collected quite a few Lambda supplies. These LQD models are my favorite. They run cool. The output is incredibly low noise and ripple, and is very well regulated. The compact size allows easy bench or portable use. I have one of these in continuous service on a high end class-A headphone amp I built, but that is another story!
A recent job change is taking me away from my hobbies, so I'm selling off all but a very basic set of instruments and lab equipment. Check out my other items! They are all in equally great condition!
