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 ...
- 24.2k
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(...
- 41
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-...
- 15.2k
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 ...
- 10.9k
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 ...
- 15.1k
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 ...
- 9,712
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'...
- 7,013
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 ...
- 6,115
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 ...
- 7,135
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_{...
- 83
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 ...
- 10.9k
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 ...
- 7,135
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 ...
- 1,099
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. ...
- 10.9k
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_{\...
- 884
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 ...
- 7,135
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 ...
- 10.9k
2
votes
Accepted
Explanation for photovoltaic circuit
Diode Like you assumed
Panels: These are the PV panenls that produce current. They produce DC current I and DC voltage V
Inverter: the inverter converts the DC current and Voltage from the panels to ...
- 24.2k
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 ...
- 10.9k
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.
- 15.1k
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 ...
- 1,145
1
vote
What signals are expected on the connectors for this 12V Volkswagen Scirroco wiper motor circuit
As indicted in the comments usually the VDC for traditional automotive is 12 VDC nominal, though in most cases it is 14 VDC.
Looks like the below image is from a similar configuration. If the part ...
- 7,135
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 ...
- 15.9k
1
vote
How do you create a negative and positive voltage(-6V and 6V) with a singular voltage source?
Below is a simple circuit that I have used to create dual power supplies with a single power source for prototyping purposes. Depending on the current draw size resistors and capacitors. There are ...
- 7,135
1
vote
How can I calculate overcurrent from over voltage for the AP9101C IC
don't know whether you resolved this.
Answer: Your part has one of the lowest over current thresholds (60mV in table), pick a higher voltage. Unfortunately I can't see how the voltage translates to ...
- 11
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.
...
- 2,477
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 ...
- 2,692
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-...
- 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. ...
- 11
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