Comments on: Complicating the Simple EL84 https://diyparadise.com/w/complicating-the-simple-el84/ ... where we have more fun! ... Fri, 29 Mar 2013 11:34:06 +0000 hourly 1 https://wordpress.org/?v=6.0.9 By: Building the Simple EL84 | diyparadise.com https://diyparadise.com/w/complicating-the-simple-el84/#comment-312 Tue, 26 Mar 2013 14:32:36 +0000 http://127.0.0.1/wordpress63/?p=241#comment-312 […] Complicating the Simple EL84. […]

]]> By: yeo https://diyparadise.com/w/complicating-the-simple-el84/#comment-140 Mon, 18 Mar 2013 14:08:06 +0000 http://127.0.0.1/wordpress63/?p=241#comment-140 hi lucas

certainly. in fact, any good constant current source would do.

yeo

]]> By: Lucas https://diyparadise.com/w/complicating-the-simple-el84/#comment-139 Mon, 18 Mar 2013 09:55:18 +0000 http://127.0.0.1/wordpress63/?p=241#comment-139 I can’t find the LM317 anywhere. Seems like they’ve been disappearing from the stores! I wonder why. 😕

Cold I use a TL7805 for this CCS instead? I’ve seen it being used as a CCS for battery chargers and high-power LEDs.
The formula for finding R1 is the same, but with 5v instead of 1,25v.

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