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I can't find the answer for my problem which is as follows:
I have an appliance that communicates over ethernet (it uses ENC424J600 chip). It has static IP address assigned by network administrator. It works in server mode and uses UDP only.
The problem is that it receives ARP requests correctly...
Yep, you're right but the schematic shows the filter appropriate for gate sensitive triacs, but for standard ones RC filter is connected directly between T1 and T2 terminals just like in figure 28.
First off all, I don't know what the components like R4, R5, CAP are used for. To turn on the triac only R6 and R4 are needed. R4 is used in order to prevent the triac from spurious triggering that may be caused by floating gate terminal. You have to be familiar with some fundamentals concerning...
The actual voltage across the triac will be much higher than 0.6V. At this range of current (8A) the voltage will be about 1.5V or higher. The triac will need large heatsink to deal with it. You can easily calculate the power loss which will be approx. 8 * 1.5 = 12W. The heatsink is usually...
This is still invalid - no matter what resistors you use or a cell; you are unable to determine if the voltmeter works properly. It may have some offset and be non-linear due to poor quality of its input circuitry or damaged components. Besides, its input impednce may change depending on the...
What do you mean by "known resistors" ?
All of them have some tolerance so it's pointless. On top of that, do you know the exact value of the voltage source you use for this ?
To make it work you will need precise voltage reference and resistors with tolerance of 0.1%. The other way is to get...
In order for ESD/TVS diodes (or transil diodes) to work correctly some rules have to be abode by. I had some bad luck with devices that were damaged from ESD discharge in spite of the fact they were protected with TVS diodes.
TVS diodes are not ideal devices. Although they are very fast but they...
I think the cheap meters are only meant for measuring low impedance source voltages such as batteries or outputs of power supplies etc, so suspect their Zin will be low, because its cheaper to make them so(?)
Not necessarily.
Analog meters can also contain input amplifiers that boost the input...
Recently I've had this sort of problem. I made 20W flyback converter for 230V AC. The inrush resistor was 2 watts metalized film resistor. The filtering capacitor (after the bridge) was 22uF/400V. When the converter was turned on for the first time to the mains nothing wrong happened and the...
I'd like to use lossless snubber in some of my designs but there is one thing that is unclear to me. I've the following snubber in one of the Meanwell power supplies...
The problem also disappears when I hold in hand the flat cable connecting the two boards (the cable has of course isolation). This creates small capacitance between cable wires and earth.
Why not ?
I have a free unlimited access to one. Just for curiosity. Gaining new experiences is not a bad thing, is it ?
I tried it as well, no success...
I added snubbers across output diode and also additional snubber on the mosfet drain. These solutions didn't work. The power dissipated in the snubber on the drain was too high.
There is no way to get access to mosfet gate as the transistor is internal part of the Viper27H and there is no access...
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