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Results tagged with zero-crossing
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user 8627
Zero-crossing refers to detecting the point at which a sine wave reaches the zero point of magnitude. In AC circuits it corresponds to the point at which no voltage is present so switching at that point reduces interference.
4
votes
Zero crossing detector: do I really need the 7W resistor?
I'm personally planning to make a zero crossing detector using an old power adapter, one with a conventional transformer. This ensures absolute safety to the circuit. I plan to feed the low voltage ou …
- 33.4k
3
votes
How to sense the zero crossing of current?
How about an optocoupler in series with the load? You would need a small circuit to rectify (BR1) and limit (D2, D3, R3) the current. D2 and D3 at the same time limit the voltage over the circuit, but …
- 33.4k
3
votes
Arduino 230v Light bulb dimming
Forget about the interrupt routine for a few moments. Did you check if you actually see the zero crossings on your input pin? You might want to write a sketch that toggles the pin13 LED every 50 or 60 …
- 33.4k