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Questions tagged [unbalanced]

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Connecting balanced output from sound card to unbalanced input of audio amplifier

I want to connect 4 mono balanced outputs from my Motu UltraLight mk4 sound card to 4 unbalanced input of a mono audio amplifier board How should I do that? Shall I just use unbalanced cable 1/4" ...
Omer's user avatar
  • 29
1 vote
0 answers
27 views

Measure unbalanced tri-phased power with 2-channel scope

Our robot is supplied trough our own "supply block", which is converting 3 phase AC (without neutral) into DC current and powering a 2 smaller devices directly between 2 pairs of phases. ...
Sandro's user avatar
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0 votes
1 answer
127 views

Solving the problem of connecting a high-current, single-phase load to a three-phase balanced network

I am an electrical technician working in a hospital. In the laundry room, all the cloth washers contain three-phase motors which are balanced loads connected to a 140 A circuit breaker. The ...
user137684's user avatar
1 vote
2 answers
327 views

In which direction is the microphone signal transported?

So I understand the general principle of how the audio signal is transported. I also understand that audio signals can be distinguish between AC and DC. But let's say we have a TRRS Jack like below. I ...
Koala's user avatar
  • 23
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0 answers
50 views

Ramifications of voltage imbalance in a 3-phase motor

I have a 2.2 kW, 3-phase motor running a high pressure compressor. The supply mains voltage is very unbalanced. P1 221 V, P2 185 V, and P3 220 V under load (it should be 240 V). This is a 3rd world ...
SV Savannah's user avatar
0 votes
3 answers
1k views

What effect does a splitting an audio signal using a y-cable have on that audio signal?

Given a clean instrument-level audio signal of reasonable amplitude passing from point A to point B via a TR/unbalanced cable, what effect would replacing that cable with a TR to dual TR cable running ...
Undistraction's user avatar
-3 votes
1 answer
521 views

How can I design a low cost fully differential op amp using a generic op-amp (audio purpose) [closed]

can I replace this fully differential Op-amp (OPA1632) with a generic op-amp based design ( Figure 2: Using NE5532). The Application area is audio signal handling. Input: Differential input / ...
Jestin's user avatar
  • 13
0 votes
1 answer
840 views

How power system handle unbalanced load?

how a delta connected primary winding of three phase distribution transformer tackle unbalanced load of three phase 4 wire unbalanced load(unbalanced load is quite common due to supply of single ...
Zarzis Rony's user avatar
1 vote
1 answer
529 views

Solving for phase currents given line currents and line voltages in 3 phase unbalanced delta load

I am given the line currents and the line voltages for an unbalanced 3-phase delta connected load but need to solve for the phase currents on the legs of the delta load. I know that: $$I_{L1} = I_{a} ...
gmartine242's user avatar
0 votes
0 answers
310 views

Balanced Mono XLR output to Unbalanced Stereo Input

I have an Allen & Heath ZED-10 mixer with a balanced XLR output. All signals coming into this mixer are mono and therefore we were going to use a single balanced mono XLR main output (Left channel)...
D.R.'s user avatar
  • 101
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0 answers
740 views

Balanced to unbalanced circuit not working correctly?

I've tried to build a balanced to unbalanced signal converter with an TL072. The problem is that if I put a balanced sine signal into it I only get the bottom half of the sine as unbalanced signal out ...
pg0000's user avatar
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-1 votes
1 answer
268 views

RS485 unmatched line - what will be the impact?

I am doing an experiment where I have a computer with an rs485 transceiver on it and data rate of 1Mbs. an rs485 30m long with Z0 of 120ohm (also have one with Z0 100ohm). at the end of the cable I ...
Man in Black's user avatar
0 votes
0 answers
163 views

How can I calculate the voltage on the load with an UNUN (unbalanced-to-unbalanced) RF transformer?

I'm having hard time calculating how much RF voltage would be applied to the load in presence of an RF transformer (Unun with a specific ratio). Let me draw a simple circuit diagram. The AC power ...
hopeso's user avatar
  • 1
2 votes
1 answer
1k views

'true' balanced audio?

I was working on the below circuit, to create a balanced audio output. But have been told this creates a differential audio output, not a 'true' balanced audio output. "A true balanced output would ...
R2D2's user avatar
  • 167
0 votes
2 answers
3k views

balanced to unbalanced audio switch

I have an audio source input, that I am putting through the circuit below to create a balanced audio signal. There will be one of these for each channel, left and right. I have been asked to provide ...
R2D2's user avatar
  • 167
1 vote
1 answer
127 views

Padding/impedance matching of a phono input

My old stereo amp got coffee spilled on it. I replaced it with the latest model from the same manufacturer. I am an old-world person, and prefer simple approaches - i.e., radio buttons to select ...
eSurfsnake's user avatar
0 votes
1 answer
243 views

Unbalanced voltage on 3-phase wind turbine system

I work on wind turbines, I am a troubleshooter. I have a problem on the turbine which I cannot solve so far I would like to ask the help of this community. When turbine starts to generate, an ...
Tibor Szabo's user avatar
1 vote
1 answer
388 views

"Ideal" way of using 3-conductor cable for unbalanced audio

I am intending to make some short (<30cm) unbalanced audio cables to interconnect devices on a musical instrument pedal board. As a matter of convenience, I was thinking of using some Belden 9451 ...
user avatar
0 votes
3 answers
868 views

3 phase unbalanced lighting system

I am working at oil pump station plant as electrical technician, I have 4 years experience in the field, and I face a problem which you can help me with. I appreciate any kind of information that will ...
Khaled Alsubaie's user avatar
-1 votes
1 answer
163 views

Need to convert unbalanced to differential input OPAMP

I have the following filter after the DAC chip (currently with unbalanced outputs) working very well, but I need now to change the DAC chip. The new source has differential outputs. Is there a ...
Gianluca G's user avatar
0 votes
1 answer
2k views

Single phase heater loads on 3 phase supply

I have two single phase heaters (same rating) that I have to connect to a 3 phase supply. Say for example the rating on the heater is 1000W, 208V. And the supply is 208V,3phase,60Hz. I connect heater-...
S.Sam's user avatar
  • 1
1 vote
2 answers
530 views

What are the limitations of "fake" balanced audio cables?

I have an AV receiver providing amplified outputs and preamp outputs. The pre-amp outputs are in the form of (unbalanced) RCA jacks. My speakers are amplified and have a balanced input. I was looking ...
FarO's user avatar
  • 1,316
0 votes
0 answers
95 views

How do distribution/transmission operators manage unbalances from LV grids?

Low voltage (LV) grids are characterized for being unbalanced due to: 1) the considerable amount of single loads, 2) unbalanced three-phase loads, and 3) unequal impedances in the cables/lines that ...
Bur Nor's user avatar
  • 63
0 votes
0 answers
803 views

When is it safe to ground DC- (specifically audio output)?

With regard to audio devices, if all equipment is unbalanced and there are no DC- connections to earth ground, equipment will generally operate hum/noise free despite large common mode voltages ...
User7251's user avatar
  • 365
0 votes
1 answer
88 views

Troubleshooting Noise/Quirks in Audio Circuit

I am working on a project that takes in a single line-level audio channel and outputs 2 balanced/unbalanced +/- outputs from that channel. I have read a number of the excellent published articles ...
User7251's user avatar
  • 365
0 votes
1 answer
768 views

How does noise affect an unbalanced signal on a balanced cable?

With regard to audio and balanced signals with XLR connectors, how does noise affect an unbalanced signal on the same cable that normally carries a balanced signal? To give some background, I have a ...
Malvineous's user avatar
  • 1,795
2 votes
2 answers
2k views

Unbalanced three phase system with unbalanced phase to phase voltages

I've got quite a problem here trying to solve this 3 phase system (2nd U12 should be U31) and hope you can help me: I'm trying to calculate the single phase voltages and currents for the drawn case ...
M. Matthias's user avatar
0 votes
1 answer
2k views

Total power measurement in 3-phase unbalanced delta system

I have a 3-phase system with an unbalanced delta load, as seen in the figure below. I want to measure the total apparent and active power consumption and if possible, the respective power consumption ...
DimP's user avatar
  • 173
0 votes
1 answer
701 views

Hum Cancelling Circuit

Consider the following circuit: I was just thinking about how connecting consumer grade unbalanced electronics together has a tendency to generate hum. For example, I have a little mixer that has an ...
squarewav's user avatar
  • 1,461
4 votes
2 answers
723 views

Unbalanced differential pair in NE5234

I had a question in mind. I was reading "Design and Analysis of Integrated Circuits" by Gray and Meyer... In the edition 5 there is an analysis of a Low power OpAmp NE5234... In the second stage of ...
Miad75's user avatar
  • 57
1 vote
2 answers
550 views

Transfomation of impedance using a balun

I need to convert 75 ohms balanced impedance to 50 ohms unbalanced impedance using a balun. How do I do that? I am new to this and don't really understand the concept of a:1 voltage and current baluns....
 Siddhartha rao kamalakara's user avatar
0 votes
1 answer
187 views

Undriven element when connecting coax to ground?

In playing around with some RF beacons I noticed that there is generally just one driven element, with the other elements connected to ground if present. I'm having some trouble wrapping my head ...
s3c's user avatar
  • 2,525