Questions tagged [balanced]

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9 questions with no upvoted or accepted answers
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Convert 3V unbalanced microphone to 48V phantom balanced

I have the following circuit in an existing product, which has a microphone, power switch, LED indicator, and is powered by 2 AA batteries: simulate this circuit – Schematic created using ...
1
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1answer
70 views

How to invert one channel of phone output?

I want to connect phone output to a car radio. It has + and - inputs. When I connect left channel to the + input, there is good quality sound, but it's not as loud as CD player. If I invert right ...
1
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1answer
74 views

Balance charging connection for 2 cell li-ion

I am designing a circuit powered using two 18650 li ion cells in series, I will wish to charge it with an imax b6 charger with balance output. Is it enough to connect the 3 terminals of the charger to ...
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2answers
54 views

Op - Amp and Unbalanced Input Differential Signal

Let's consider for instance an Open Loop Op-Amp (for instance with double power supply: VDD and -VDD), which is a good comparator circuit. The sign of its input differential signal (Va - Vb) ...
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0answers
65 views

How do I balance a low-impedance signal?

I often use direct boxes to convert a high-impedance guitar or keyboard signals to low-impedance and then balance the signals for sending on a long run to the mixer. Now I want to take an unbalanced, ...
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0answers
529 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 ...
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1answer
64 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 ...
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1answer
47 views

Using cat5 and mic cables within same DMX512 universe

I understand that I'm not suposed to use mic cable for DMX sygnal. And that's the reason why the standard mandates 5-pin XLR connectors. I also know that in practice 20 out of 20 events I've witnessed ...
-1
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1answer
130 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 ...