OK this is for fun..
How do you wire a rotary selector switch using a bridge rectifier and a single diode so that 5 leds light to show the position of the switch ie one led shows position 1, two leds show position 2..the format is in the picture..(The dots show the leds that should be on in each position)..
I have the answer and will post it shortly..
Regards
M. Gregg
How do you wire a rotary selector switch using a bridge rectifier and a single diode so that 5 leds light to show the position of the switch ie one led shows position 1, two leds show position 2..the format is in the picture..(The dots show the leds that should be on in each position)..
I have the answer and will post it shortly..
Regards
M. Gregg
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A diode matrix is the answer. Consider using a 7-segment display to display the input number directly. One segment is used by all the digits, so can be wired permanently on, 2 & 3 have 3 more segments in common, so that can save a couple more diodes. How about a Nixie tube or other retro numeric display? About $10 will get you one shipped from Russia.
As promised..
I quite like this layout as 3mm green LED's in the corner of a chassis..
I'm not a fan of the seven seg display...
The other way I like is with different colours under a glass prism so it changes colour with the input...
Regards
M. Gregg
I quite like this layout as 3mm green LED's in the corner of a chassis..
I'm not a fan of the seven seg display...
The other way I like is with different colours under a glass prism so it changes colour with the input...
Regards
M. Gregg
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