Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [bidirectional]

Bidirectional implies that a single pathway allows for power or signals to flow in both directions.

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Does MOSFET let current flow through source to drain as it allows it from drain to source?

Does a MOSFET allow current flow in reverse direction (i.e.; from source to drain)? I made a Google search, but couldn't find a clear statement about this matter. I have found this similar question, but it is about detecting current direction from…
hkBattousai
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What actually happens when we set direction on GPIOs in controllers ?

Generally, while working on GPIO pins of any controller/device, we set the directions for the GPIO pins. Let's say in LPC2148(ARM7 core) controller, we have IODIR to configure the direction of Pin. We set the IODIR for output and clear for…
GShaik
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How does a bidirectional level shifter work?

I have the following circuit with an NPN HEXFET Q1 (BS170) Correct me if I'm wrong: When the TX-3V3 microcontroller is 3.3V i.e. logical 1, the TX-5V is a logical 1. This is because the gate of Q1 is CLOSED when \$V_{GS}\$ is greater than 0, and…
user1534664
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Bi-Directional Buck Boost Converter

I'm trying to build a Bi-Directional buck-boost converter. The input should be between 9-12 and output should be 12. Can any one recommend a good topology to follow. I also have a few conceptual questions. If anyone can recommend good topologies to…
smokey
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Avoiding echo/feedback on speaker-phones, how?

Even a $20 mobile phone with a speakerphone has no problems of feedback. While I understand that companies like Mediatek have use crazy volumes to bring down mobile chipset prices so low, but reading some articles I get the impression that the…
bdutta74
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Why doesn't PCIe and similar signaling systems use full-duplex links?

I'd like to get more PCIe bandwidth for GPU compute applications. It occurred to me that PCIe bidirectional links are really dual simplex (a pair of unidirectional links). That means if there's no data to transmit in 1 direction, 1/2 the links are…
Yale Zhang
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A simple analog neural network to implement the XOR operation

I am reading this paper and wanted to replicate some of the results as part of a learning process. I'm more of a digital guy but obviously have had some analog design as part of my studies. Implementing a neural network model to learn the XOR…
Leonhard Euler
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Will an FPGA get damaged if contention occurs on a bidirectional pin on it?

I was told in the university that bus contention can cause hardware damage. I am referring to a situation where two pieces of hardware force/drive different logic levels on the same signal. Taking example of an FPGA that is connected to a PS2 device…
quantum231
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Bidirectional flyback converter design

I see a fair amount of questions on here about designing flyback converters, but I don't see any about designing a bidirectional DC/DC flyback converter, such that either side can be the primary and either side can be the secondary based on some…
orangeandblack5
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Bi-directional electronic switch for external circuitry

I am in the process of designing a PCB that is powered by a 10V / 1mA supply from a fandeck (incorporating EC/DC fan motors). One of the functionalities include having continuity between 2 pins on the PCB (Volt free contacts), which are connected…
NeuroEng
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Bidirectional digital Isolation

I have used digital Isolators before in unidirectional Designs. I am now faced with isolating a bidirectional digital signal line. Specifically I would like to isolate the 2-wire debug interface of an STM32 and the STlinkV2. I have found a circuit…
KaRu5
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Bidirectional solid state switch for solenoid

I'm building a circuit to control a flip dot display, which is basically a matrix of solenoids which you control with bidirectional current across the 25 columns and 7 rows of the board. The attached schematic shows the circuit so far - I'm using…
David
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Correctly Interfacing to a Bidirectional Signal

Background I'm designing an interface in VHDL that connects to a bidirectional signal. However my experience in the dynamics of Hardware Design is limited. What I have at the moment is below: Within the Red box is what's on the FPGA, outside of that…
Nick Williams
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Bidirectional TVS in 12 V DC

I understand that bidirectional TVS diodes have no polarity and can be used to limit positive and negative swings in an AC application. Is there a down side to using bidirectional TVS diodes in 12 V DC applications, such as across the coil of the…
Max
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Verilog - connecting multiple bidirectional buses

I've been designing a retro computer in verilog as an exercise and so far have a simple 8-bit CPU that communicates directly with a single RAM chip via a bidirectional data port. This works great in my testing, however the need has arisen to include…
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