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سؤال: Can these be used on a 12,24,36 volt systems , If so what do I need to get so I may do this ??

السؤال بواسطة jesleetroit على 2019-01-13 11:55:14

Dave The voltage drop of these diodes is approximately 2 Volts at a current of 20 mA. If you want to power off a 12v supply then you need to 'loose' 10v at 20 mA using a series resistor. Ohms law [V = I x R] gives R = V / I ..... so R = 10 divided by (20/1000) = 500 Ohms. So a 560 Ohm resistor, in series, would, with a 12 Volt supply pass [ I = V / R] 10 divided by 560 = 18 mA approx. For 24 volts a 1.2 K resistor would give about 18 mA. I leave you to work out the resistor for use with 36 Volts!

2019-02-11 07:31:09 مساعدة (4)
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سؤال: I can not find the weather display.

السؤال بواسطة bando53 على 2018-09-06 02:28:12

Dave I can't get the weather display either - except once I had a quick flash of a temperature (21C) and, I think, a picture of clouds and perhaps a water drop (humidity?). I was at a friends house, so whether the watch was picking up Bluetooth from a device in their house I don't know! The information display, which should show things like weather, seems to be non-functional. I updated the firmware and also did a reset but still no weather!!

2018-09-08 04:59:34 مساعدة (0)
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سؤال: straff material ?

السؤال بواسطة sanukonni على 2018-08-13 06:56:37

Dave Strap material? Described on the page. My Black watch is soft black rubber - very comfortable.

2018-09-08 04:53:41 مساعدة (0)
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سؤال: is it contains android os??

السؤال بواسطة Manohar M على 2018-08-22 06:16:34

Dave It connects by Bluetooth to Apple or Android smart phone.

2018-08-22 10:40:02 مساعدة (0)
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