Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Instead of using a buffer with all the peripherals, use one single buffer in series with the four SPI BUS lines. This will strengthen the driving capacity of the serial lines. Now you may use a 4.7K to 20K resistor in series with all the tap lines connecting individual peripherals. Even if a...
No simple formula, but as a starting point 0.5mW per centimeter square per degree celcius is acceptable for flat horizontal plates. Since your board is 100cm sq. the average power handling should be 50mW per degree celcius and a total rise of 6/.05 = 120C.
FR4 boards should be ok if you use...
Again you are speaking in terms of connected and not connected.
Floating only means electrical isolation ie. a high impedance path.
For that matter, even an unconnected pin in a microcontroller is connected through air. And during OFF state the collector and emitter are connected through...
It means electrical isolation and not physical. There's no real importance of physical isolation in terms of electricity. We always speak of electrical isolation.
The emitter is grounded, it is obvious that emitter is at reference voltage ie. 0V
Re: Decoupling capacitor/s value vs effective frequency coverage & anti-resonance.
Decoupling capacitors are used for for two purpose.
1. EMI reduction
2. Noise filtering.
Put simply, the first situation arises because power takes a finite amount of time to be transferred from one...
As already pointed out, the total series resistance is probably excessively large.
But anyway this method for determining the saturation current doesn't look very promising to me.
Firstly because there'e no sharp line for saturation. And secondly, the inductance is many a times, a non...
1. During the dead time (when all switches are OFF) the inductor current must find a path. And the diode provides this path.
2. Placing a schottky diode between the C_B junction provides a path for the stored charges in the junction to discharge externally. Unless the charges are removed, the...
Yes you are right, the diode is not between B-E terminal therefore it does not appear to protect the B-E junction directly.
But when used in an inductive H-Bridge, the protective nature of the diode is apparent at once. Infact had it not been for the internal diodes, external ones...
The diode probably protects the Base-Emitter junction in case of reverse voltage. The B-E junction as a very low reverse breakdown voltage (around 10V) and can easily be destroyed if there's a reverse voltage across it.
I didn't literally mean anywhere!
I meant... having learnt the characteristics of a thermistor connect it to any design/circuit that it suits. Why be limited only to SMPS circuits?
And ofcourse, a person who knows its characteristics, will not place it in parallel with a transformer!
Your algorithm #13 indefinitely is simpler but it seems to belong to Greece! Would you please explain the basic logic behind it.
And also, as far as the algorithm in post #12....
Storing of number is not required. Only the first level of remainder needs to be stored and updated as...
Two factors will determine the inrush:
Larger capacitors will generally have lower ESR but higher ESL, provided all are the same type, from the same manufacturer.
Why dont you specify what type of capacitors you are using, also their voltage rating, capacitance and the voltage...
A thermistor is essentially a resistor whose resistance depends strongly upon its body temperature. 100 degrees rise may reduce the initial resistance by as much as as 100 times, as opposed to normal resistors where he resistance would generally increase by roughly .01% to .02% for a 100 degrees...