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  #11  
Old 13th December 2021, 10:45 AM
A Stuart A Stuart is offline
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Default Re: LED Indicator Resistor Calculator

Quote:
Originally Posted by Richard View Post
..... 2 LEDs in inverse parallel fed by a capacitor at one end.
Quote:
Originally Posted by Phil Y View Post
Not seen the capacitor addition ....
Phil, just to clarify, this (diagram attached) is how I interpreted Richard's description. The capacitor acting to limit the current, in similar role to the resistor but not producing waste heat, rather than being employed to smooth flicker.
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  #12  
Old 13th December 2021, 08:51 PM
Richard Richard is offline
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Default Re: LED Indicator Resistor Calculator

Yes that's the drawing Alastair. I wonder if the 2 leds were physically close together you'd get less subjective flicker as they'd each light for half a cycle opposite to each other er.. sort of push-pull LEDs?
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  #13  
Old 13th December 2021, 09:18 PM
A Stuart A Stuart is offline
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Default Re: LED Indicator Resistor Calculator

Push-pull ones exist but as far as I can see only with different colours. Don't know if this would show as a single mixed colour, or an even more annoying two-tone flicker in the corner of your eye. Two separate adjacent LEDs might be the worst combination as it could appear to move as you moved your head.
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  #14  
Old 18th December 2021, 07:49 PM
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Phil Y Phil Y is offline
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Default Re: LED Indicator Resistor Calculator

Thanks Stuart, I've never seen that before.

Phil.
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