By: Dimming AC lights the hard way - Hack a Day
[...] It’s that time of year again where the thermometer drops, the sun sets earlier, and we try to warm our hearts with the solstice festival that is common in our own respective cultures. Of course...
View ArticleBy: Juan Sebastian Cifuentes
Hi. Does the transformer induce some phase (delay) to the zero cross detection?
View ArticleBy: waterbury
Juan, I’d imagine the Sine Wave looks the same after being stepped down, only with less power, so I don’t think a delay is being caused here, or the wave is being pushed out of phase. The wave becomes...
View ArticleBy: JDL
I know this has been idle for a few months but just to give a possible solution. You have a processor, which allows you more flexibility that a transistor circuit monitoring a full wave rectifier. If...
View ArticleBy: JDL
On additional thought, you can really factor out the asymmetrical aspect of the half wave detector. Whatever Vih is, the peak of the AC powerline waveform is going to be half way between the rising...
View ArticleBy: deathventure
You can use another optocoupler on the transformer line in place of the transistor circuit instead. Look up the 4N26. The internal diode will half rectify the wave and the transistor will cause a more...
View ArticleBy: waterbury
You must be Psychic. The last comment here was over a month ago, and I JUST had gotten done purchasing it’s sister chip, the H11AA1 when you commented. I was researching this earlier. The Renard PIC...
View ArticleBy: Dimming AC lights the hard way - Hack a Day
[…] It’s that time of year again where the thermometer drops, the sun sets earlier, and we try to warm our hearts with the solstice festival that is common in our own respective cultures. Of course we...
View ArticleBy: Juan Sebastian Cifuentes
Hi. Does the transformer induce some phase (delay) to the zero cross detection?
View ArticleBy: waterbury
Juan, I’d imagine the Sine Wave looks the same after being stepped down, only with less power, so I don’t think a delay is being caused here, or the wave is being pushed out of phase.The wave becomes...
View ArticleBy: JDL
I know this has been idle for a few months but just to give a possible solution.You have a processor, which allows you more flexibility that a transistor circuit monitoring a full wave rectifier.If you...
View ArticleBy: JDL
On additional thought, you can really factor out the asymmetrical aspect of the half wave detector. Whatever Vih is, the peak of the AC powerline waveform is going to be half way between the rising...
View ArticleBy: deathventure
You can use another optocoupler on the transformer line in place of the transistor circuit instead. Look up the 4N26. The internal diode will half rectify the wave and the transistor will cause a more...
View ArticleBy: waterbury
You must be Psychic. The last comment here was over a month ago, and I JUST had gotten done purchasing it’s sister chip, the H11AA1 when you commented. I was researching this earlier. The Renard PIC...
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