Comments on: Zero crossing detector circuits https://www.epanorama.net/blog/2017/11/26/zero-crossing-detector-circuits/ All about electronics and circuit design Fri, 24 Apr 2026 16:26:45 +0000 hourly 1 http://wordpress.org/?v=3.9.14 By: Tomi Engdahl https://www.epanorama.net/blog/2017/11/26/zero-crossing-detector-circuits/comment-page-1/#comment-1752664 Tue, 25 Jan 2022 13:47:58 +0000 http://www.epanorama.net/newepa/?p=61466#comment-1752664 You are right on that rectifier issue.
I did not spot that when picked the circuit idea. Not good at all. I have to add note on that.

You are right that generally mains voltage at breadboard is not a good idea, but can work sometimes of you know what you are doing.

]]> By: Rob https://www.epanorama.net/blog/2017/11/26/zero-crossing-detector-circuits/comment-page-1/#comment-1752574 Mon, 24 Jan 2022 16:39:46 +0000 http://www.epanorama.net/newepa/?p=61466#comment-1752574 Hi – You are using and showing a Bridge rectifier rated at 50V for the 230V input – and the resistors are on the input on the breadboard before the bridge – but after it on the circuit… Even with an isolating transformer, 230V on a breadboard is not advisable! When we look at a breadboard, we typically think “low voltage – can poke about”…

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