11 votes
Accepted

Unknown circuit component with glass encapsulated contacts

It looks to me like a reed switch (I can't be really sure though because the image is not clear enough). A reed switch is an electrical switch operated (usually) by an applied magnetic field. A ...
NMech's user avatar
  • 24.3k
5 votes
Accepted

In the equation for power as a function of current and resistance, what do the two factors for current represent?

Firstly, by temporal I think you mean spatial. Secondly if you consider acceleration, the units are m/s^2. Seconds-squared are not spatial, but they are temporal. But they needn't be either. Consider ...
Jodes's user avatar
  • 1,304
5 votes
Accepted

Units for plasma etching of circuits: A (with degree symbol)/min

Anisotropic etching is a linear process, like welding, so presumably the units would be distance per time. Unlike welding it is at a small scale. See this slideshare. In this case units are Angstroms ...
do-the-thing-please's user avatar
4 votes
Accepted

Looking for a device that breaks the circuit if the voltage gets too low

The simple answer is that you can get off the shelf modules which does exactly what you want. They are often called 'split charge modules' and are designed for installations like boats and motor-...
Chris Johns's user avatar
  • 15.2k
4 votes

Designing a Voltage Divider

R2 and RL are in parallel so the voltage across them will be the same so can be treated as a single resistor when thinking about the voltage across them. So Req(lower) = (1/R2 + 1/100kohms)^-1 Req(...
user8327311's user avatar
4 votes

Clarification on how current flows from a socket into a device

My understanding is that when you have a circuit with that's connect to a battery they has to be some resistor in the circuit of some kind to ensure the current on the wire is small enough to power ...
Transistor's user avatar
  • 10.6k
4 votes

Can a 0.5 W resistor be substituted for a 10 W resistor?

No. Here's why: As current flows through a resistor, heat is generated as electrical power is dissipated. That heat flows out through the walls of the resistor, the inside of which is hot. Too much ...
niels nielsen's user avatar
3 votes

Using Stainless steel or iron pots in oven

If it was a microwave oven then all metals can damage the oven if they are placed in the oven & the oven is operating. If the oven is is thermal oven that is heated by an electric element, gas or ...
Fred's user avatar
  • 9,667
3 votes
Accepted

Electrical potential and grounding in a circuity, why it works?

The issue is certainly NOT that the chassis ground is at -100V, it's absurd. The chassis ground by definition is at equal potential for power supply and load, you can treat it like one big wire that'...
Tiger Guy's user avatar
  • 6,793
2 votes

SolidWorks circuit simulation?

CircuitWorks doesn't simulate the electronics; it just integrates between some common PCB design software formats and SolidWorks for mechanical information. For example, maximum component height, ...
Jon Watte's user avatar
  • 328
2 votes

How do they get more signals simultaneously inside a node of a neural network?

First off, neural networks are only very rarely done in hardware, as actual summation of electric signal. Much more often they are just programs that run on standard computers, simulating a network ...
SF.'s user avatar
  • 6,135
2 votes

Circuit analysis, voltage in and voltage out

$R_{23} = {\frac{1}{\frac{1}{R_2}+\frac{1}{R_3}}}$ Resistors in parallel $R_{23} \approx 9.018KΩ$ Plugging in the values $V_{out} = V_{in} \cdot {\frac {R_{23}}{R_{1} + R_{23}}}$ Voltage division $V_{...
Mohit Jain's user avatar
2 votes
Accepted

How do I calculate voltage at an LED in parallel?

One good place is to start is LTL-307EE datasheet. From the datasheet take look at current profile for the device. Below is the forward current and voltage characteristics. Also take look at ...
Mahendra Gunawardena's user avatar
2 votes

How would I measure this battery circuit with a multimeter?

If you trying to measure voltage, connect the black connector probe (Terminal) to COM. Move the rotatory switch 20 DCV. The dot should point to 20 DCV. Then place the black exposed probe to negative ...
Mahendra Gunawardena's user avatar
2 votes

How do you create a negative and positive voltage(-6V and 6V) with a singular voltage source?

Partial answer. More later - maybe! Figure 1. OP's circuit. There are a number of problems with your circuit. Your op-amp VCC+ is fed through a 5.6 MΩ resistor. The datasheet says that the quiescent ...
Transistor's user avatar
  • 10.6k
2 votes

Switching a Circuit on-and-off In-step with the Rotation of a Drive-shaft (Mechanically)

Without a sketch your setup is difficult to visualise. A typical industrial solution would be to use an inductive proximity switch. These are non-contact, fast switching, water-proof, etc. Figure 1. ...
Transistor's user avatar
  • 10.6k
2 votes

Help in Inverse Laplace Transform in Circuit Analysis

To solve this issue, you need to be familiar with Euler's formula: $$\sin(wt) = \frac{e^{jwt}-e^{-jwt}}{2j}$$ You definitely started on the right track with this issue, only finding the right value ...
Petrus1904's user avatar
  • 1,069
2 votes

How can I get final value of $V_{out}$ at $t=∞$ in RC circuit?

The final value theorem is for a signal, not a transfer function. Use the transfer function to express the output signal $$ V_{\mathrm{out}}(s) = \frac{1}{RCs+1} V_{\mathrm{in}}(s),$$ with input $V_{\...
useless-machine's user avatar
2 votes

Simulation of RC circuit using Proteus

Try using a replacing a 9V VDC voltage source with a VAC voltage source. Pay attention to the frequency of the VAC voltage source. This should address the issue. With regard to determining the time ...
Mahendra Gunawardena's user avatar
2 votes

How can I create an RL circuit?

Try this. Figure 1. A simple snubber indicator. Pressing SW1 will pass a current through L1. D1 will be reverse biased and LAMP1 will remain off. Releasing SW1 will cause L1's top terminal to switch ...
Transistor's user avatar
  • 10.6k
2 votes

Circuit with Contradiction

If the switch is ON then the OR gate output will turn on. The NOT gate will not affect the OR gate. If the switch is turned OFF (having been on) then OR will turn off which turns NOT on which turns OR ...
Transistor's user avatar
  • 10.6k
2 votes

What is the purpose of the resistor in this circuit

Power supply schematics like this one often contain an arbitrary load resistance just to specify where the output of the circuit is taken off. It is not part of the power supply circuit itself.
niels nielsen's user avatar
2 votes

Mackie CR3 bookshelf speakers only play incredibly quietly on max volume

This is a standard issue diagnostic issue. We could send you to an audio equipment SE but diagnosing issues is what I do for a living. You say you have already checked most of these but the order I'd ...
user1683793's user avatar
  • 1,000
1 vote

Designing a loaded voltage divider?

Your circuit works. Proper ground connection. Your battery would be +12V -(-8V) = 20V. Voltage at Point A = 12V, Point B = 9V, Point C = 4V and Point D = 0V. The circuit is a good place to start. ...
StainlessSteelRat's user avatar
1 vote

Utilize multiple vehicle power outlets to increase wattage capacity of inverter

It is possible that the outlets you want to pair together may have the same supply : relay and / or fuse... You should connect a set of wires with appropriate fuse directly to the battery, if this is ...
Solar Mike's user avatar
  • 15.6k
1 vote

Cannot understand an equation related to impedance. (Power system analysis)

$\underline Z$ is, by definition, $\frac{\underline V}{\underline I}$. So $\underline Z$ is not shown, but it comes from the calculation for $\underline V$ as a function of $\underline I$. The ...
TimWescott's user avatar
  • 2,522
1 vote

What's the most practical way to measure angular velocity for small rotations?

I'd use a video camera and attach a striped pattern to form a moire pattern which is easy to see in the video. Here's a link: [http://www.unappel.ch/people/emin-gabrielyan/public/070804-multi-ring-...
D Duck's user avatar
  • 391
1 vote

I am trying to create an op amp based negative voltage regulator

I had this same question but was able to solve it. I've attached a picture of my circuit. I know this was asked but I hope this helps someone. The Supply rail is attached to the rippled power supply. ...
Z.T.Soyoye's user avatar
1 vote

My output is much lower than I expect it to be for my transistor-zener diode voltage regulator

The simulation has an AC source feeding the Zener Diode - Series pass transistor circuit. Replacing the AC source with the DC source should eliminate voltage plung situation. Alternatively inserting a ...
Mahendra Gunawardena's user avatar

Only top scored, non community-wiki answers of a minimum length are eligible