Thanks, Josh. I wasn't aware of this relatively new development, which
is a very positive thing.
73, Jim K9YC
On Tue,4/25/2017 4:01 PM, Josh Fiden wrote:
That may not be true for the KPA1500. It's pretty common now,
especially in higher power switchers, to include power factor
correction (PFC). Instead of only charging bulk caps at AC peaks when
rectifiers are forward biased, the rectified incoming line hits a
boost converter which smooths out the cap charging rate.
For example, the Meanwell RSP-3000 48V 62A supply, includes PFC and
claims power factor > 0.95. Without PFC, might be PF=0.6 and certainly
operate as you describe with high current peaks, big IR drop & I2R
power losses.
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