Hi guys,
I've got a product in the works and need help with the electronics side of things. I cant get into too much detail on what the actual product is as the lawyers are still in the process of filing.
Within this product will be 2 25mm 5v DC micro blower fans made by sunon. If anyone has a better/smaller blower fan please advise. The fans must output as close to 1 cfm(per fan) as possible while being very quiet. Both fans need to run for 8 hours on a small battery source.
so far the best power source due to size constraints and optimum battery life (size being the biggest factor, I need something slim) is 4 aaa battery's wired in 2 3v banks of 2 battery's per bank. the battery pack as a whole needs to be as thin as possible while powering the fans for as long as possible, 8 hours is ideal. I'm experimenting with rechargeable battery packs as well and would like to offer a rechargeable battery as an option, this rechargeable battery would have to finish charging sooner than it could be drained by the fans.
My biggest question is how to control the fan speed as efficiently and easily as possible.. ideally a slider pot would be best due to size and manufacturing simplicity but there must be a better alternative that wont heat up and use power. I doubt I could make a PWM that would be small enough/cost effective to work. If I could get a small switch that had 3 positions, off/half speed/full speed I think it would work.
If someone can spare some time and really help me put together the best combination to achieve my goal id happily send them a couple units once we go into production in a few months. this product is something that can be used by anyone. once the patent is filled I will disclose what it actually is.
these are the specs on the fans
Voltage - Rated5VDCAir Flow1.0 CFM (0.028m³/min)Static Pressure0.300 in H2O (74.7 Pa)Bearing TypeVapo-BearingFan TypeBlowerFeatures-Noise32 dB(A)Power (Watts)0.50WRPM12000 RPMSize / DimensionSquare - 25mm L x 25mm H x 10mm WTermination2 Wire LeadsWeight0.017 lb (7.71g)Operating Temperature14 ~ 158°F (-10 ~ 70°C)Current Rating0.090AVoltage Range3.5 ~ 6VDC
Thank you very much for any help.
I've got a product in the works and need help with the electronics side of things. I cant get into too much detail on what the actual product is as the lawyers are still in the process of filing.
Within this product will be 2 25mm 5v DC micro blower fans made by sunon. If anyone has a better/smaller blower fan please advise. The fans must output as close to 1 cfm(per fan) as possible while being very quiet. Both fans need to run for 8 hours on a small battery source.
so far the best power source due to size constraints and optimum battery life (size being the biggest factor, I need something slim) is 4 aaa battery's wired in 2 3v banks of 2 battery's per bank. the battery pack as a whole needs to be as thin as possible while powering the fans for as long as possible, 8 hours is ideal. I'm experimenting with rechargeable battery packs as well and would like to offer a rechargeable battery as an option, this rechargeable battery would have to finish charging sooner than it could be drained by the fans.
My biggest question is how to control the fan speed as efficiently and easily as possible.. ideally a slider pot would be best due to size and manufacturing simplicity but there must be a better alternative that wont heat up and use power. I doubt I could make a PWM that would be small enough/cost effective to work. If I could get a small switch that had 3 positions, off/half speed/full speed I think it would work.
If someone can spare some time and really help me put together the best combination to achieve my goal id happily send them a couple units once we go into production in a few months. this product is something that can be used by anyone. once the patent is filled I will disclose what it actually is.
these are the specs on the fans
Voltage - Rated5VDCAir Flow1.0 CFM (0.028m³/min)Static Pressure0.300 in H2O (74.7 Pa)Bearing TypeVapo-BearingFan TypeBlowerFeatures-Noise32 dB(A)Power (Watts)0.50WRPM12000 RPMSize / DimensionSquare - 25mm L x 25mm H x 10mm WTermination2 Wire LeadsWeight0.017 lb (7.71g)Operating Temperature14 ~ 158°F (-10 ~ 70°C)Current Rating0.090AVoltage Range3.5 ~ 6VDC
Thank you very much for any help.