Recent content by Purple_Dan

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    Voltage and current phase shifting/Current without voltage?

    Okay, so regarding my level of knowledge on the subject, I have a BEng in Robotics, which was mainly software and electronics, with a bit of mechanics thrown in. Also an A level in Physics. So I'm not completely out of my element, but most of my electrical knowledge is DC and nowhere near the...
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    Voltage and current phase shifting/Current without voltage?

    Wow thanks! It's nice to have backup. Also, I was thinking the same thing regarding the particle/wave duality. I know it's the best explanation we have at the moment, but it's a bit lazy to say it's sometimes this and sometimes that. So I don't have a lot of time to post, but I'm trying to keep...
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    Voltage and current phase shifting/Current without voltage?

    Unfortunately, I'm not at liberty to be doing mathematical proofs as I'm at work, however, you may have shed some light on the situation. So we're basically fudging the graphs by ignoring the voltage across the capacitor when the source voltage is 0?
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    Voltage and current phase shifting/Current without voltage?

    Thanks for the quick reply. Although interesting, I didn't really get the answer to my question from that article. I understand how the power in the circuit is 0 at any time the voltage or current is 0. But I'm not too interested in the power for this specific question. Perhaps it would be...
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    Voltage and current phase shifting/Current without voltage?

    Hello, I've recently been learning about capacitance and inductance causing the current to lead or lag. But how can the current possibly maintain the same waveform? Shouldn't the zeros of voltage and current always align? How can there be current without voltage?
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    Variable 100-350VAC output controlled by PLC?

    You beautiful person! Well done, that's the hardest part out of the way, helps me immensely! Thank you!
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    Variable 100-350VAC output controlled by PLC?

    I suppose the thing that bumps the cost up is he wants it selectable from the HMI. So then it needs to go through the PLC and all that jazz. We could just put a non motorised Variac next to the HMI. Much cheaper, only one component needed and he only needs to twiddle a knob.
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    Variable 100-350VAC output controlled by PLC?

    Hello, I have a strange request from a client. He has a "burn-off" which is used to burn bits of labels that are stuck onto his products, that's a bit vague, but it's all the info I have. The request is that he wants to be able to change the voltage going through the burn-off anywhere between...
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    DIN Rail Terminal Blocks: L/L, L/N, N/L and N/N?

    Cool, thanks guys. Sorry for the late reply, I've been quite busy on other projects. But good eye, didn't spot that!
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    DIN Rail Terminal Blocks: L/L, L/N, N/L and N/N?

    Hello, I'm not an apprentice, I'm a qualified controls engineer and have been working with mainly software for 2 years now. I'm familiar with the principals of electricity, but not all the tools that are used in the industry. This is my first experience with panel building, but I've worked with...
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    DIN Rail Terminal Blocks: L/L, L/N, N/L and N/N?

    Hello, I've recently had a slight trajectory change in my career and I'm learning the ropes in electrical panel building. I have to order a load of DIN rail terminal blocks and I've come across a few variants and I don't know which one is the correct one for my application, or if it even...
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    How to reduce the current of a signal by an exact amount?

    Congratulations! You won! Your answer is exactly what I'm looking for. It's also the exact same solution that the client has decided to go with! Yes, my client finally asked an actual Electronics Engineer (without telling us he was going to do so) and they pointed him towards this solution. Just...
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    How to reduce the current of a signal by an exact amount?

    Give me some credit! I know I'm only doing software now, but my degree is in Robotics Engineering! If you take a look at this http://www.smcworld.com/upfiles/manual/e/E-ITV-STD-RF-A.pdf On page 6, you'll find a diagram, top right. The positive of the "monitor output current" is attached to the...
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    How to reduce the current of a signal by an exact amount?

    So if there's a magical machine that can do this for less than £250, then I think we're good.
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    How to reduce the current of a signal by an exact amount?

    You definitely can have different amounts of current flowing through different parts of a circuit. I've managed to find the right point at which to measure the circuit, but my input device isn't ideal. I can't change the input device, so I was wondering if I could change the signal. I'll draw a...
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