New answers tagged ac
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powers in AC circuit using complex numbers
Current Divider Rule:
\$ I_X = \frac{Z_T}{Z_X + Z_T} I_T \$
\$ Z_T = Z_1 || Z_2 || Z_n , excluding \:R_X\$
Capacitor current:
\$ 2 \angle 36.87 \frac{60 \angle 90}{60 \angle 90 + 20 \angle -90} = 2 \...
- 15.1k
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Current in secondary side of step-down welding transformer
The current in the secondary is dictated by the impedance of the secondary. The current in the primary is set by the current in the secondary, divided by the transformer ratio.
So in a step-down ...
- 30.4k
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Diode in series with a resistor an in parallel with another resistor
Isn't it a diode clipper circuit? During the positive half cycle of the source there will the current flowing in R1 and R3 upto 0.7 volts from the source. After 0.7 volts the diode becomes a short ...
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If AC current can flow through a capacitor, why can't it flow through an open circuit?
Now the confusion here occurs if we are looking at it literally as an electron flow, if you would explore more deeply, the electron flow even for a DC current is not continous.
There is no point of ...
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How to wire an old single phase AC brushed motor to be reversable
Did you figure out the wiring in the end?
Going on the image above, you might be able to separate the joined wires and connect them to the other side. This might work.
Check the resistance on them to ...
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Circuit that outputs signal A when AC sine is positive and signal B when AC sine is negative
Thank you for the tips. I eventually got a 4N25 opto to work with two outputs, one positive sine high and one negative sine high. The Duty cycle is not quite 50% but when voltage gets up close to 110v ...
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Repurpose adjustable standing desk linear actuator for a project on my truck
You’d need to have a close look at the circuitry; it’s quite possible that the actuators run on low-voltage DC and the control circuit certainly will. If you’re lucky you’ll find that there’s an AC ...
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Multisim simulation insight
If "j * omega" ... is an inductance ...
And 4*V is a "step generator" ...
Then I could write these equations: Made with Maple ...
i1 (left-high loop), i2 (left low loop), i3 (right ...
- 12k
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Can I give DC 12V to a AC 12V input?
Linear regulators like 7812 needs 2v or more above the output voltage as input in order for them to work properly. Example, you want a regulated 12v dc output, you have to at least give an input of ...
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Residual current relay continuity
The RCD should not be damaged by triggering at its design leakage trip point, as long as the interrupted current is within the design range. Most devices will have durability limits of 1000s of trips.
...
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How can I convert a Noma Ornamotion Christmas tree ornament motor to USB power?
I did this a long time ago with transformers. Sorry, I don't remember the transformer part number, but I matched the voltage as close as I could. I may have used 1/2 of a center tap.
I also have some ...
- 15.1k
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How to connect a 12V electromagnet to 220V power adaptor
Should I use a lock that releases on power-on or power-off?
You have a couple of considerations:
The lock should last much longer if it is only powered for a short while. Energise-to-release would ...
- 171k
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Can we sell 110V equipment without NRTL certification in a US market?
Yes, you can sell it. The NRTL is enforced at a local level and a legal liability (cover your butt). As far as the local enforcement goes, OSHA requires product testing, so any organization that needs ...
- 78.1k
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Can we sell 110V equipment without NRTL certification in a US market?
There is no US federal law that requires it. Your customer may require it for insurance or other reasons, or it might be required by city or state regulations.
Consider FCC and other regulations too.....
- 384k
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Complex equations in AC RLC circuits spiralling out of control
Tried to simulate that circuit.
Found that it is "stable" with gain <= 1.
- 12k
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Do Kirlian setups work with DC power?
According to this paper, Kirlian photography will work with DC.
There's mention of some differences between Kirlian pictures made using AC and Kirlian pictures made using DC.
The polarity of the ...
- 69.2k
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How much clearance do I need for a terminal block that will run at 240VAC, 10A max?
You have the IPC rules, however these assume your board is clean.
It may not remain clean, or not be as clean after soldering.
Based on experience we use the following drc rules:
Masked traces 2.5mm
...
- 22.3k
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