8
votes
Unknown DC-DC converter topology in ST datasheet
It is a flyback.
Don't let the number of diodes confuse you here - that bridge rectifier is just necessary because the circuit strives to do full-wave rectification.
A flyback converter's transformer ...
- 1,789
7
votes
Accepted
I2C differential network architecture using PCA9615
You'll find that modern cars are essentiall 2.55m × 3m robots containing a human driver.
The guys producing millions of them have agreed to use CAN, because the combined cost of cabling + CAN-capable ...
- 98.3k
7
votes
Accepted
Do you know about topologies that look like this?
This is a 3-level single-phase boost converter. I think it has been originally presented in a paper at APEC in 1995:
You can simulate this structure with SIMPLIS for instance and the below circuit is ...
- 23k
6
votes
How to select DC-DC converter topology?
I recommend picking a topology, and running down the design path enough to get a feel for if you can meet your requirements.
If you can't, and can't see a way to easily fix it, move on to the next ...
- 30.5k
6
votes
Do you know about topologies that look like this?
Do you know about topologies that look like this?
Yes.
Is this right?
Yes, that is one variant of the family of converters known as "3-level boost converters".
How do I search it?
Well, ...
- 5,670
5
votes
Accepted
Designing a CANbus+DC power network of sensors
What do you think about this scheme?
From the OP it seems you describe mixed topology with very long runs. The CAN bus is not particularly suitable for this. It is designed for single long run with ...
- 13k
5
votes
Where do electric circuit topologies come from?
Ans: inventors create them. From nothing. Then everyone else hooks them together as "building blocks" to create more complicated systems. Then sometimes years later, mathematicians work ...
- 11k
4
votes
Accepted
Create a synchronous network of 400 devices
First, synchronize all of the devices to a common timebase using NTP, PTP or GPS, depending on your actual accuracy requirements (on the order of ms, µs, or ns, respectively).1 NTP should be ...
- 177k
4
votes
How to select DC-DC converter topology?
Picking a topology for a DC-DC converter starts with defining the requirements.
Personally, I'd first check the necessity of isolation. If it is not necessary then, depending on the relationship ...
- 38.1k
4
votes
How is circuit topology chosen in analog designs?
Often, for board-level design one engineer will be responsible for an entire board. If it's complicated, or if it has a mix of critical digital and analog components, or if it's got an FPGA on it, ...
- 46.7k
4
votes
How is circuit topology chosen in analog designs?
How does 1 play out?
I spend a portion of my time researching circuits. A good engineer is also a good researcher, they know how to find information. There are many sources, books, research papers, ...
- 87.2k
4
votes
Unknown DC-DC converter topology in ST datasheet
This has some characteristics of a forward converter, (or it uses "forward" topology). See this wikipedia article or this guide.
Specifically, the current in the secondary of the transformer ...
- 26.2k
4
votes
Accepted
Two different topologies for flyback
You usually need a slightly stronger magnetizing current with an active-clamp flyback (ACF) than in a classical QR converter. This is because of the need to swing negative in the case of the ACF so ...
- 23k
4
votes
Accepted
What is an integrator topology?
Basic ideas
Perfect current integrator
To make an integrator, we need a storage ("accumulating") element. In electronics, we usually use a capacitor for this purpose. When we charge it with ...
- 18.2k
4
votes
Accepted
Using an N-channel FET as a switch
Does the circuit above using an N-channel FET (with the source
connected to MCU_NRST and the drain connected to FTDI-DTR), achieve
this purpose?
No it won't work because, irrespective of the gate ...
- 467k
3
votes
Accepted
Can 10Base-T1L / 10Base-T1S Ethernet be used in a bus topology?
10BASE-T1S can be used in a bus network (mixing segment) with up to at least 8 nodes and up to at least 25m. A Physical Layer Collision Avoidance Algorithm (PLCA) is also used in conjunction with the ...
- 805
2
votes
Feedback Topologies
Firstly, let us look at some equivalent terms
series-shunt:voltage series or voltage controlled voltage source (VCVS)
series-series:current series or voltage controlled current source (VCCS)
shunt-...
- 504
2
votes
Accepted
Circuit topology name and function for PNP transistor in light barrier circuit
You made a good start by setting up a simulation. Unfortunately, your simulation is misleading you. There are two issues:
The phototransistor is not an ideal current source; instead, you should be ...
- 177k
2
votes
CAN bus expander circuit
The TJA1050 CAN PHY can't be used to make a passive CAN hub/repeater.
If any device starts to pull the TXD is low to transmit dominant state on the CAN bus, the receiver is still active as it can ...
- 165k
2
votes
Accepted
Unknown DC-DC converter topology in ST datasheet
Fly-Forward is a valid topology. This can run with either a gapped core (preferred), or solid ring toroid. Lack of any primary side snubber or clamp or any quasi-resonant capacitor, is bit scary ...
- 36
2
votes
Unknown DC-DC converter topology in ST datasheet
Because the primary circuit goes open-circuit when Q1 is off - there is no snubbing or core-reset circuitry - I'm in the flyback camp.
IMHO - The reason for four diodes is that there are ((two)) ...
- 22k
2
votes
CAN Bus Topology, is it possible to have "T" shape topology?
Take note of what is said in the document you linked: -
Maximum unterminated stub length is 0.3 metres
Terminations are required at both ends of the cable
This also means that you must have two (...
- 467k
2
votes
Why does 10BASE-T require hubs?
Not particularly. Twisted-pair could work the same way, if you built a properly impedance-controlled 8P8C T-connector (which sounds a bit fiddly, but doable). But I don't think anyone really wanted ...
- 7,948
2
votes
Accepted
Why does 10BASE-T require hubs?
There is nothing specific about coax (rg6) and cat 5 unshielded twisted pair that prevents the latter from working in a bus topology. The extra shielding in rg6 helps but the twisting in cat5 should ...
- 73.3k
2
votes
What is an integrator topology?
Here's the basic op-amp integrator circuit (source: Wikipedia:
The feedback to the inverting input goes through a capacitor. In order to keep the inverting input at the same potential as the non-...
- 132k
2
votes
What is an integrator topology?
simulate this circuit – Schematic created using CircuitLab
In his answer, the forum member Circuit Fantasist has mentioned the name "Miller integrator". In fact, this integrator ...
- 27.4k
2
votes
LED indication for driven n-FET inputs
The first schematic will not work as intended. The forward voltage of the LED dominates the gate voltage, so different LED colors will produce different gate voltages and some combinations of LED and ...
- 7,935
2
votes
Using an N-channel FET as a switch
I would swap the source and drain of M1. The body diode is not shown. As drawn, the DTR signal would pull NRST down independent of the control signal.
If source and drain are swapped, since when DTR ...
- 152
2
votes
Using an N-channel FET as a switch
What I really want is to implement this function table:
CTRL FTDI OUT
0 0 0
0 1 Z
1 0 Z
1 1 Z
One of the simplest circuits ...
- 1,271
1
vote
Two different topologies for flyback
Is this correct?
Active clamp flyback converters have higher efficiency (or even the highest amongst all the flyback configs) because the dissipative snubber-clamper of a QR flyback is replaced with ...
- 38.1k
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