Questions tagged [topology]

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Topology and protocol for boards connection

Would like to have some insight on which data protocol to use to communicate between a master and several slave boards on a project i'm working on. My initial idea was to daisy chain all the slaves. ...
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Advantage of the very common electronics-lab.com linear power supply circuit

I'm in the process of designing my own lab power supply. During my research I came across a design from electronics-lab.com that seems to be very popular for DIY adjustable power supplies (here is a ...
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Why does 10BASE-T require hubs?

As I understand it, some of the physical layer options for Ethernet include:\ 10BASE5 (now considered obsolete): a single length of thick coaxial cable. 10BASE2: thin coaxial cable, of which multiple ...
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Method for minimizing relays in a switching/steering network - combinatorics algorithm?

I'm developing an industrial power device which has multiple power supplies that need to be multiplexed to multiple outputs (MIMO) through a network of relays. Similar to how digital logic can be ...
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MOSFET H-bridge for DC motor

I'm planning to make PCB with two H-bridges for two windshield wiper DC motors @12V that can draw 20-30A at higher loads (normal operating range, without load is 2-3A). I want to drive H-bridge in ...
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224 views

Can 10Base-T1L / 10Base-T1S Ethernet be used in a bus topology?

Old 10mbit standards like 10Base2 (thinnet) and 10Base5 (thicknet) are used in a bus topology, multiple devices are connected to one continous cable (or with BNC T-connectors, but same principle). Is ...
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Totem pole driver topology (inverting amp)

Hello guys this question is regarding a gap in my knowledge regarding transistors specifically the driver of the totem pole configuration. Based on the following figure And these results here: When ...
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2 answers
184 views

CAN Bus Topology, is it possible to have "T" shape topology?

I know that for a thumb rule, it is possible to have a length of CAN Bus network with: Speed [Mbps] * Length[meter] < 50 . i.e., with 0.5Mbps, it is possible; source. But, is it possible to have ...
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What's the name of this DC-DC topology?

I was helping some friends that wanted to add a light load to a DC power rail in an industrial installation. The voltage to this rail comes from an array of voltage sources, with one voltage source ...
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4 votes
4 answers
1k views

Unknown DC-DC converter topology in ST datasheet

I have found this weird DC-DC converter topology in datasheet of MC34063 from ST. The primary charging is single ended, so at first it seems like flyback, but it has four diodes on the output instead ...
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CAN bus expander circuit

I am trying to design a CAN bus expander. In this case I could implement star topology of multiple buses in parallel. It would avoid having problems with reflections and delay. For this purpose I ...
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Is backfeeding BD9C601EFJ buck converter IC a problem?

So I've got a circuit like that [Values are completely random, I didn't set them yet, the question is only about topology]: The circuit is intended to charge a 2S battery through F3, however when the ...
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Which better welding inverter topology

I have build a welding inverter using two switch forward (reference based http://danyk.cz). But I used Irgpc40u igbt(single each side) and sg3525 pwm. I test it at 900watt power line, 1.6mm electrode. ...
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1 answer
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I2C differential network architecture using PCA9615

I'm building an architecture for a large scale robot (3x3meters) and I would like to build a specific architecture around I2C differential to control motors drivers (this should be noisy). My problem ...
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2 answers
164 views

Where do electric circuit topologies come from?

The question is pretty straight forward but allow me to expand. If not clear, by circuit topologies I mean connections between circuit elements/blocks. What branch of mathematics deals with this? Do ...
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1 answer
86 views

Linearizing multi-star network for home automation

I'm designing a communication network for private home automation. My design goals are: Local wrt network changes. That is, changing one part of the network should not require modification of the ...
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1 answer
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Create a synchronous network of 400 devices

I have around 400 devices that i want to address in a star topology. Each device controls a set of LED strips (27*12 resolution). The idea is display a video animation in a good frame per second rate (...
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1 answer
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Feedback topology of a common emitter circuit

I was studying the topology of this particular circuit. I do not understand how the topology of this circuit is considered series-series. I can see it in input , but at the output it would make more ...
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3 votes
0 answers
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2KW - 48V - 240v / 50Hz UPS - Unknown Topology

I am refurbishing a 2kw ups that a friend gave to me. It had failed and had been left in a shipping container on a site and the PCB had suffered some low level corrosion. The PCB is a 2 layer board, ...
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4 votes
2 answers
642 views

How to select DC-DC converter topology?

I would really appreciate some help on this one. I am doing my bachelor's thesis/project which requires me to design and construct a DC-DC converter. I have been working on it for a couple of weeks ...
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2 answers
193 views

Possible ways to represent a circuit schematic

I have the following circuit with a 9V battery and two resistors, R1, R2, in parallel. Here is how it looks: Are the following three ways all valid ways to represent this circuit? Explanation: In ...
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11 votes
6 answers
999 views

Feedback Topologies

This is my homework problem. I tried to solve this problem but i got it wrong. Here is the problem: As it is clear from the circuit that we are taking voltage at the node V0 and some fraction of ...
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2 votes
1 answer
462 views

Designing a CANbus+DC power network of sensors

I'm designing a network of sensors to be placed in an outdoor environment, see the attached diagram. The network will consist of 30 data acquisition boards (very low power consumption), divided in 10 ...
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4 votes
2 answers
212 views

How is circuit topology chosen in analog designs?

Suppose I'm an experienced analog designer, e.g., RF, power electronics, ADC. How does choosing a circuit topology fit into the overall workflow for a typical work assignment? I imagine my manager ...
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0 votes
1 answer
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What is the name for the low pass topology in this figure?

I am a student researching physics and I am currently fixing some old equipment (RF signal attenuators for our acousto-optical modulators), I found the control voltage passing through a low-pass ...
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2 votes
1 answer
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Circuit topology name and function for PNP transistor in light barrier circuit

I have seen this rather simple circuit for end position detection of a DC motor drive mechanism. An infrared LED (V402) and a phototransistor (V401) are used as a light barrier. Can someone give me a ...
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