Meanwell PS creates a load?
Recently realized that my solar systems daily output had increased by ~50Wh per day when in storage with no shorepower. It was hard to believe that the parasitic loads or the battery self-discharge...
Forum Discussion
wa8yxm wrote:
I would like to think the output is diode protected and thus the device wont resent any load when not powered.. But alas that is how **I** would build them (in fact I do build power supplies)
I know Progressive Dynamics the wizard is still on line and the fan, far as I know those are the only loads (The Wiz is basically a voltmeter load, not much).
Can't talk about others
IF you can adjust the output voltage of that Meanwell... I'd put a heavy duty diode in the line (Say a set or half set of alternator diodes with heat sinc and fan, hook the fan to the Meanwell side) And increase the voltage by the amount indicated.. or a diode isolator and again increase the outut by the diode drop.
PD converters ARE "designed" to be able to accept and live with "12V" connected to the output of said supply..
Meanwells and pretty much any other power supply which has not be specifically designed to charge a battery (or have 12V at the output terms at all times, not so much.
Many switching power supplies will have some sort of feedback network for the regulator to "sample" the output voltage.. Some may also have current limiting circuits present on the output section or some may even have a drain resistor to drain off the residual voltage when the power supply has been powered down. All of those scenarios can "sneak" current when the power supply is turned off.
When using ANY power supply not specifically designed to charge a battery or not designed to be paralleled it IS very wise to include your own diode in the output of each supply.. It will save you hassle and possible smoke packets from being accidentally released..
