All Questions
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10 views
What is the difference between a static and dynamic system?
In Control & System theory, does a simple integrator consider a static system? i.e.:
$$\dot{x}=u , y=x$$ is a Static System. While, a dynamical system can be described by :
$$\dot{x}=f(x,u) , y= ...
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0answers
14 views
74HC14 Schmitt Trigger Oscillator - Weird output at certain voltages
Recently bought some TI SN74HC14 Hex Inverter IC's to learn and am having weird issues with them. I've looked at many examples online and have tried wiring them the same with the same passive values. ...
0
votes
1answer
12 views
Is there a way to have visibility of certain part of Nios II system memory for debug purpose?
To know what value exists at address X one may simply read it using IORD and then send it via JTAG UART to the PC. However, to simplify debug process, is there a way to have visibility of certain ...
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0answers
10 views
Simulate capacitor discharge in Qucs
I want to find how long a capacitor takes to discharge from 12 volts to 2 volts using Qucs. I can use a voltmeter to measure the voltage across it when it charges up, but I cannot turn the power ...
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0answers
7 views
wireless model simulation without RF band
Can i make a simulation without adding the RF band and what is the affect of that on the signal if I want to study the effect of multipath fading ?
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0answers
19 views
Power supply issues [on hold]
Not sure if this is the correct place to post this but I don't know where else to try. I have a tekpower tp3003e power supply that I have had for about a year and a half. My issue is that even when ...
-1
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0answers
16 views
wireless data transmission from a sensor to pi or arduino [on hold]
I'm working on a robotic project and using raspberry pi for it. I need to trigger(move) my robot when it receives HIGH from the sensor. But the sensor cannot be directly connected to the pi to send ...
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0answers
23 views
RGB LED strip, Arduino and 3 transistors, will it fry?
So I successfully connected my 5m RGB LED strip to an Arduino UNO, and to control the colors with three PWM signals using transistors. But I'm afraid of frying anything in long term of usage. So I ...
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1answer
18 views
Phase angle and transfer function for low pass RL circuit
I am trying to do some calculations for a low pass LR circuit. (V out is across inductor). My input waveform is a square wave which has a period equivalent to L/R. I am having trouble making sense of ...
0
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1answer
23 views
Minimum CMRR design requirement
I've just started studying op amps recently and I am having trouble with the following problem from my textbook:
Design the difference amplifier circuit to realize a differential gain of 1000, a ...
0
votes
1answer
15 views
AT90USBKEY as USB host
Can AT90USBKEY be used as dev. board for USB host device?
What I would like to try is to use this board to check if I can send SCPI commands to some third party device via USB.
And can this usb ...
0
votes
1answer
64 views
Can A Coil (1000 Turns) of 32 AWG Wire Stand 220V AC Mains
I am really new to Electronics. I spend time on it as a hobby. I have recently grown my interest on inductors but most of the calculation seems pretty hard to me. Little unsure if what I made can ...
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2answers
37 views
Voltage gain of the MOSFET Push Pull Amplifier
In our final exam we had a question about the following MOSFET push pull configuration:
simulate this circuit – Schematic created using CircuitLab
where
$$V_{TN}=V_{TP} = 0$$
$$K_N=K_P=4 mA/V^...
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votes
0answers
36 views
Individually modulate two lasers diodes using sound - while using the same power suppy and preventing signal “bleed over”
I'm trying to individually modulate two lasers diodes using the same power supply. The modulation for each laser module is created by the left and right audio channels. Is there a way to do this ...
0
votes
1answer
31 views
PWM dimming using the TLC5916 current limiting LED driver
I'm using a TLC5916 which is a constant-current LED driver. I want to dim a LED and have setup a simple board with a particle chip. Try as I might I don't get the LED to be dimmer without flickering (...
