Nov-13-2017, 06:56 PM
I've noticed myself having a lot of typo's lately, and was worried that my age was catching up with me.
Then, I started thinking about my wireless keyboard.
When I turn it on, the battery LED turns green and then goes out after a second or two, thus indicating
my batteries are OK.
But then, I recalled a project that I worked on which used a TI MSP430 processor. The current drain on the power
source was only a few micro amps. So I theorize, that when the keyboard is first turned on, the filter capacitors would charge
due to the initial surge, and would remain charged for quite a while, thus giving a false battery OK indication.
Bottom line, my new keyboard proverb:
when in doubt, replace the batteries.
Come to think of it, I may still be on the original set of batteries, and I think I bought this keyboard about 5 years ago.
Then, I started thinking about my wireless keyboard.
When I turn it on, the battery LED turns green and then goes out after a second or two, thus indicating
my batteries are OK.
But then, I recalled a project that I worked on which used a TI MSP430 processor. The current drain on the power
source was only a few micro amps. So I theorize, that when the keyboard is first turned on, the filter capacitors would charge
due to the initial surge, and would remain charged for quite a while, thus giving a false battery OK indication.
Bottom line, my new keyboard proverb:
when in doubt, replace the batteries.
Come to think of it, I may still be on the original set of batteries, and I think I bought this keyboard about 5 years ago.