Zac
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Triac spurious triggering issue
2 votes

Try connecting the gate of the TRIAC to T1 using a resistor (260 Ohms) or so. This is seen in many SSR's and it seems to solve most of the false triggering. Also look for an opto driver which has ...

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FAN NOISE issue in triac phase angle dimming
1 votes

I have also experienced the same humming noise while using PWM dimming on Fan. The only solution that works well is by using capacitors to reduce speed. You may need to stack 2 or 3 capacitors (1uF, 2....

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Interfacing switched resistors to an ADC input of a microcontroller
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0 votes

My initial design (Proposed Schematic) which is mentioned in the question had a major drawback of spoiling the ADC pin when there is a loose contact i.e if the negative wire to the switched resistor ...

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Relay sticking when switching mains for LED power supply
0 votes

There are relays with high inrush current capabilities upto 100A. For example check out the below relays which are 16A, 240AC rated (100A inrush) and comes in smaller size. Pansonic https://www3....

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Driving an LED with resistor directly from 3.3v GPIO pin of a microcontroller
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0 votes

I think I found out the issue. My LED and resistor was already soldered into my microcontroller board (even though the MCU was not powered up) and somehow the resistance across my LED is showing as ...

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Why do lights get brighter when I turn on the hair dryer?
0 votes

I would suspect the dimmer which would be causing the lights to get brighter. The dimmer may be using triac and a zero cross detection circuit to do the dimming and the lower voltage should be ...

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