Comments on: Transistor-Based Variable Current Drive for LED Calculator http://www.neufeld.newton.ks.us/electronics/?p=1145 Sun, 08 Dec 2024 17:19:24 -0600 hourly 1 http://wordpress.org/?v=3.1.3 By: Joe Danson http://www.neufeld.newton.ks.us/electronics/?p=1145&cpage=1#comment-30560 Joe Danson Tue, 18 Sep 2012 18:08:48 +0000 http://www.neufeld.newton.ks.us/electronics/?p=1145#comment-30560 You could also use a inverse logarithmic tapered potentiometer: http://www.resistorguide.com/potentiometer-taper/ but i guess the problem is the non-linear behavior of the diode. The current formula I = U/R is actually linear (no powers) You could also use a inverse logarithmic tapered potentiometer: http://www.resistorguide.com/potentiometer-taper/

but i guess the problem is the non-linear behavior of the diode. The current formula I = U/R is actually linear (no powers)

]]> By: Keith Neufeld http://www.neufeld.newton.ks.us/electronics/?p=1145&cpage=1#comment-26109 Keith Neufeld Tue, 07 Sep 2010 18:35:16 +0000 http://www.neufeld.newton.ks.us/electronics/?p=1145#comment-26109 Au contraire, Anton! The rotary encoder is still there to set the voltage of the target system for the resistor calculations. It just wasn't used in the data I presented in this post. Au contraire, Anton! The rotary encoder is still there to set the voltage of the target system for the resistor calculations. It just wasn’t used in the data I presented in this post.

]]> By: Anton Eliasson http://www.neufeld.newton.ks.us/electronics/?p=1145&cpage=1#comment-26108 Anton Eliasson Tue, 07 Sep 2010 18:19:52 +0000 http://www.neufeld.newton.ks.us/electronics/?p=1145#comment-26108 There is just one problem with the project. It has no rotary encoder! There is just one problem with the project. It has no rotary encoder!

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