Questions tagged [bidirectional]
Bidirectional implies that a single pathway allows for power or signals to flow in both directions.
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How to eliminate internal circuit current consumption from the measurement in bi-directional current measurement circuit?
I am comparatively new in this domain. I am trying to design a bi-directional current measurement circuit. This is a 5V to 9V DC system. I have two USB C female ports at both ends. Which means I can ...
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Need an explanation of how the circuit works
I came across this bidirectional switch circuit by Texas Instruments.
I know how two MOSFETs configuration works but when I apply the pulse to turn it on and off the NMOS but it does not change its ...
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TXS0102 level translator, problem connecting to external lines outside
I have a TXS0102 bidirectional level shifter connected to some external lines (RJ45 connector with cat 3 cable). The external lines have too much capacitance and it prevents the level translator from ...
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MOSFET conducting even when no gate signal applied in bidirectional bipolar switch arrangement
I have a circuit as shown here and the expected waveforms are shown besides. When iL>0, the mosfet Q1 and diode D2 conducts the current and vice versa.
I see in the practical circuit ...
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On Chip Peripheral Emulation - How to accomplish communication with an emulated peripheral that relies on bidirectional signals in between?
I recently asked some questions for an application in hope to gain more clarity on how to accomplish an emulation of an input device peripheral (in my case an input mouse) in simulation. Following ...
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How to isolate the AM2301 sensor with a small footprint and low-cost isolator (digital or opto)?
Looking for a solution for isolating the AM2301 sensor with either digital or opto-isolator. I have space and cost constraints. Thank you .
AM2301 is accessed via a single bus / single line interface ...
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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 ...
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Ripple problem when using a type III Compensator for buck boost converter
I need your help, and from my last question here, I understand I need a closed-loop for my design, which helps to reduce the output overshooting. Below is the plot.
From the plot you can see my ...
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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 ...
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Telegraph circuit confusion
I know little about this stuff, but I bought two old telegraph keys and two sounders. They polish up beautifully. I’d like to get them working in two remote locations in my house.
Each location will ...
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Issue from my buck/boost converter
After my simulation, I am getting this in my output, which does not look good at all. I find it difficult to find a spice model for DC/DC isolator that can give me a positive, negative supply, and ...
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1 wire to 2 wire bidirectional UART
I'm working on diagnostics program for my old GM diesel, the old GM diagnostics uses a 1 wire bi directional serial protocol, 5v HIGH, 0v LOW, with the PCM data line being held high when idle, and the ...
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MOSFET heats up quickly in High power 14V DC-DC bidirectional charging circuit
I am currently design the following circuit to charge a 14V LifePO4 4 cells battery while running a high power motor at 14V 24A. There are some issues that I am currently facing:
Without any diodes ...
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Using bidirectional optocoupler instead of two identical optocoupler
I have two types of PNP & NPN proximity sensors and intend to use one connection socket for both types.
I design a circuit with two normal optos for each line however to save the parts and space I ...
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(Update)Using a bidirectional optocoupler for attaching any PNP & NPN sensor type [duplicate]
I have two different 12 V PNP & NPN proximity sensors. My first design was for each sensor type, having an identical PCB design with a normal optocoupler with a dedicated wiring arrangement.
My ...
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Bi-directional Line Termination using series resistor (s)
I am designing a PCB for an ST micro MCU with external SDRAM.
On the demo board, ST is using one(1) series resistor termination for the bidirectional data lines.
ST places this resistor at about 30/70%...
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Bi-directional Three State IO and microprocessor gpio
I want to use an MP5010B Electronic Fuse IC. I will enable or disable it by using the Enable/Fault pin which is billed as a bi-directional three state IO.
I will enable or disable this pin using a ...
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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.
...
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Two directional FET switch. Is it possible?
Is it possible to have a high side MOSFET switch that will allow any direction of current? I was trying to design one but without the success. Or should I use a relay?
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Is there a simple IC for disconnecting a power source?
I'm looking to create a simple circuit to connect/disconnect a power storage capacitor to/from a larger circuit. In the model railroading world, we use capacitors as "keep-alives" to keep ...
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8-bit quasi-bidirectional I/O port
The schematic attached is from a very old device. It's using the microcontroller SAB 80535. According to the datasheet P5.7-P5.0 is an 8-bit quasi-bidirectional I/O port. There's a keyboard, a LCD and ...
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Digital isolator says it is bidirectional but its block diagram does not follow that statement
I am wondering if ADUM1285CRZ is Bidirectional or unidirectional digital isolator. It says it is Bidirectional, but the block diagram says otherwise.
Tha datasheet block diagram shows one direction ...
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Analogue switch TS3A475 does the direction matter?
Does the "direction" of the signal matter?
signal is 1/3Vcc to 2/3Vcc
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Bi-directional on/off toggle soft power latch
I need a one-button on/off toggle power latch to connect/disconnect a 36V battery to two VESC-controlled 500W motors with regenerative braking.
Most of the designs I found for soft latching circuits ...
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3.3V to 5V logic level shifter with 3.3V microcontroler board and 5V arduino sensor
I would like to use logic level shifter like the one above.
3.3V logic level would be connected on NodeMcu 3.3V microcontroller board pin, while 5V level would be used for Arduino sensor.
What ...
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Bidirectional buck boost converter [closed]
I am searching for a bidirectional buck boost converter evaluation board for charging and discharging the batteries.
Input= upto 30V DC
Output= upto 10V to 20V DC
Current= less than 10A
I always ...
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VFD Motor Bidirectional Control
So I have a control panel which controls the speed and direction of a motor in a sliding mechanism. the direction can be inverted using a tri-state selector on the panel. the selector input is a ...
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Common Source vs. Common Drain for N-Channel Switches
Most discrete load switches I have seen (Using N-Channel FETs) have been in the common-source configuration. What, if any, are the operational differences between this and the common-drain ...
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How to control the non-isolated bidirectional buck-boost converter?
I have been working on a control software for below given bidirectional buck-boost converter.
The planned usage is for charging and discharging of a traction battery in electrical vehicle.
I am not ...
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Power factor down after solar connection
We installed solar plant in factory. After that power factor goes down to 0.16. Normally it never goes below 0.85 in history even if we keep APFC off. We always maintained it to 0.99. Note - Main ...
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SMD potentiometer direction
I currently struggling with a circuit and trying to identify the parts which may cause the problem. The circuit needs a trim potentiometer. Mine looks like
with the symbol
Does the direction have ...
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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 ...
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How does an auto bidirectional voltage translator work?
I'm trying to understand how the auto bi-directional voltage translators work.
Background:
I have to choose a part that can translate signals in both ...
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How to make a bidirectional power switch for negative supply rail controlled from logic level MCU
I'm looking to build a bidirectional power switch for a negative power rail. I have a +12V, +5V, +3V3 and -5V supply to switch. For the positive supplies, I'm using two P-channel mosfets in a common ...
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Question about bi-directional pin from Roth reference
I now am studying the tri-state buffer from the reference "Fundamental of Logic Design", 6th edition, By: C. H. Roth and L. L. Kinney.
I found that circuit of a bi-directional pin as application of ...
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How to find a truly bi-directional level shifter?
I'm trying to create an interface PCB to a 32 channel USB GPIO device which has 3.3v IO, and I want the flexibility to use 1.8, 3.3 or 5v - across all pins, or at most in 2x banks of 16 - I don't need ...
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DC Motor Controller: hacking it bidirectional?
I just picked up two of these DC motor controllers (https://www.amazon.ca/Controller-Yeeco-Universal-0-01-1000W-Generator/dp/B00RZ97DDQ/ref=sr_1_10?dd=1QzB1w0bE3cxmYrmXew-NA%2C%2C&ie=UTF8&qid=...
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Can I use TXB0104B bidirectional level shifters on the Intel 8085 NMOS CPU buses?
I want to connect an old Intel 8085 CPU to an FPGA board. The basic issue is that the 8085 works at 5V while the FPGA will not accept any voltage avobe 3.3V so I decided to use the TXB0104 / TXB0108 ...
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state-space model for bidirectional buck-boost with input capacitors
I'm having some trouble simulating the behaviour of a bidirectional buck-boost converter for battery charging purposes. The circuit looks as follows:
I would like to create an averaged state-space ...
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How can I size the current ripple of a DC-DC converter for lithium batteries
I am designing a bidirectional DC-DC converter to charge and discharge batteries on a DC bus. The power of this converter is 50 kW and the average current in the inductor (the same as that on the ...
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bidirectional buck/boost converter vs separate buck and boost converters
I have recently leared about bidirectional buck/boost converters. They can be used in hybrid vehicles for optionally charging a 12v battery from a higher voltage battery or vice versa. How would one ...
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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 ...
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Transmission gate simulation
When the voltage on node n-mosfet is a Logic 1, the complementary Logic 0 is applied to node active-low n-mosfet, allowing both transistors to conduct and pass the signal at IN to OUT. When the ...
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How do the parasitic elements behave in a bidirectional power switch made from back-to-back MOSFETs?
I would like to know how to determine the value of the total internal gate mesh resistor (Rg) and different parasitic capacitors especially Cgs and feedback capacitor Cds of a bidirectional power ...
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in SPI, can MOSI and MISO be connected together?
I'm using an 8051 series microcontroller, and documentation states that if I use serial mode 0, then its RXD pin can function as a bi-directional pin (both input and output) while TXD is strictly a ...
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Replacement Triac
I have a simple dimmer module with a busted Triac MAC97A6. I want to replace that component so that the module will work again but stores near my area don't have that specific component. One store ...
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Choice of the right stepper motor
I need to make a precise angular rotator for my directional antenna. The goal is to rotate the antenna at a precise angle. Arduino stepper motor library has functionalities to run a stepper motor for ...
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Bidirectional USB Type C charging
Recently I bought a ready PCB that is basically a power bank when 18650 batteries are connected This. It has a micro USB port to charge the 18650s and two USB type A one of which output is 1A and the ...
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Pull-up resistors needed for quasi-bidirectional push-pull PCF8575/PCF8574(A)
I wonder if I need pull-up resistors when using the PCF8575 I/O extender.
It's not directly mentioned in the datasheet (http://www.ti.com/lit/ds/symlink/pcf8575.pdf). The datasheet does remark that ...
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Does the Bluetooth protocol inherently support bidirectional data transfer?
Bluetooth is used for a lot of devices that send data in one direction: keyboards, mice, headphones. If it was designed for that, I would think that it was originally specified to only send data in ...
user56384