Flooded Batteries on Float
It's been mentioned that flooded batteries just keep accepting amps seemingly forever whereas AGM's will stop accepting amps when they're full. Don't know if it's true or not but I can say that my bat...
Forum Discussion
Ooooo I gots lots and lots of power supplies that actually are mislabeled. They say "power supply" when they should actually say "heater".
Some of the rinky dink junk has heat sinks inadequate in size for the job. If a 9 cent IC should fail, the jig is up. To China it goes in the hold of a ship for recycling.
Heat sinks and fans consume a lot of my budget in my fooling around with LED's projects. Neither are inexpensive to purchase.
So if a device is designed with a temperature safety shut down, and it shuts down at X load at 35C while a competitor sails happily along at 40C ambient, maybe just maybe the 35C product has components that are 10C warmer than the other product, inside.
With power supplies - I cheat. The big charger of mine for example has several 130 watt 240 volt fans inside to thwart operating in a 35C ambient. An exam with a pyrometer forced me to add forced air induction.
So when a product seemingly shuts down "too early" temperature wise it most certainly may be protecting itself --- from chintzy design engineering.
An RV does not lend itself well to compartment ventilation. An owner voicing opinion from Maine must consider the fact that an owner of a similar product in Henderson, NV faces an entirely different environment.
Ralph Scheidler PhD founder of Sure Power Industries, coached me many decades ago about the art of heat sinking and component cooling. It is a complex area and several factors have to be considered when analyzing or engineering or troubleshooting.
But to reiterate, many products are already shot in the foot when they leave the assembly line. Stupid things. Vertical rather than horizontal orientation of heat sink fins - never mind scrimping on surface radiation area. Faulty design that minimizes convection BTU transfer.
Just My Two Centavos Worth .....:)
Some of the rinky dink junk has heat sinks inadequate in size for the job. If a 9 cent IC should fail, the jig is up. To China it goes in the hold of a ship for recycling.
Heat sinks and fans consume a lot of my budget in my fooling around with LED's projects. Neither are inexpensive to purchase.
So if a device is designed with a temperature safety shut down, and it shuts down at X load at 35C while a competitor sails happily along at 40C ambient, maybe just maybe the 35C product has components that are 10C warmer than the other product, inside.
With power supplies - I cheat. The big charger of mine for example has several 130 watt 240 volt fans inside to thwart operating in a 35C ambient. An exam with a pyrometer forced me to add forced air induction.
So when a product seemingly shuts down "too early" temperature wise it most certainly may be protecting itself --- from chintzy design engineering.
An RV does not lend itself well to compartment ventilation. An owner voicing opinion from Maine must consider the fact that an owner of a similar product in Henderson, NV faces an entirely different environment.
Ralph Scheidler PhD founder of Sure Power Industries, coached me many decades ago about the art of heat sinking and component cooling. It is a complex area and several factors have to be considered when analyzing or engineering or troubleshooting.
But to reiterate, many products are already shot in the foot when they leave the assembly line. Stupid things. Vertical rather than horizontal orientation of heat sink fins - never mind scrimping on surface radiation area. Faulty design that minimizes convection BTU transfer.
Just My Two Centavos Worth .....:)
