ralliart12 wrote:May I know what does "being on the edge of the Poly Fuse" mean?
What about the pins & the series of numbers, e.g. "Pins 4,5" mean?
Well a .5A Poly Fuse is rated at 12 watts when using it at 24V.
Poly fuses have a gray area as to when they will trip since they do so by heat just like a breaker in your house except these reset themselves so if they trip they are not dead. Poly fuses can also surge above their rating for short periods of time without tripping.
The AF5X draws current at between 7 to 15 watts as seen below in this graphs from a user powering an AF5X with a WISP Switch. This picture came from
THIS post.
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As You can see in the 30 second graph which every data point is 1 second the radio draw PEAKS at 14+/- watts draw during its Tx cycle and drops to 7 watts during the Rx cycle.
Now if you look at the 5 minute graph which averages 10 of the 1 second collected data points for a 10 second average current draw the draw becomes more flat at between 7 to 12 watts average constant draw.
Now if you look at the 1 hour graph which averages 120 of the 1 second collected data points for a 120 second average current draw the draw becomes more flat at between 9+/- watts average constant draw which is below the .5A/12W Poly Fuse and then would come down to how warm is the board/environment because remember a Poly Fuse trips when it gets too warm.
So with the current WISP Switch models out there if you plug an AF5X into a port that is rated for 48VH those Poly Fuses are rated at .75A or 18 watts at 24V.
Now with the new WS-6-MINI, WS-8-250-XX, WS-12-250-XX we upgraded all the Poly Fuses to .75A across the board so you can just plug the AF5X into any standard 24V port.
The WS-12-250A&B and WS-24-400A&B rack mount models those board have .5A Poly Fuses but their boards are so large and they have excellent airflow that the board temp stays pretty cool even in hot environments so a 24V standard port should be fine but if you do not like being that close to the edge just plug the AF5X into a port capable of 48VH and you have .75A at 24V standard.
