Analog circuits have a range of voltages, rather than just two as in digital logic.
0
votes
0answers
12 views
ADC with STM32F3
I need to convert 4 analogue values simultaneously because I plan to compute the ellipse parameters (that's why I need the simultaneous conversion). I'm using the STM32F3 because it has 4 ADCs. ...
1
vote
1answer
76 views
FPGA Genetic algorithm
I would like to be able to dynamically generate specific circuits for transfer to an FPGA. It seems I cannot amend the bit file directly. Can I generate the bit file from a schematic representation, ...
2
votes
2answers
78 views
How can I stablize an analog to digital reading?
I've built a clock out of a PIC16F877, some LEDs and other stuff...
To set the time in 5 minute intervals, I'm using a 22K ohm potentiometer connected between GND and +5V with the contact connected ...
0
votes
0answers
24 views
suitable replacement for irfp240 / 9240
A three-phase motor driver uses irfp240/irfp9240, each phase = three parallel totempoles.
The unit breaks down on low speed, thermal runaway. I can't change the setup (I'd wish for a multiphase ...
5
votes
1answer
62 views
Analog Thumb Stick Problems
Outline:
I'm trying to work with an Arduino and Analog thumb stick to get values for a simple differential drive robot I'm working on. The Keyes_Sjoys Arduino Joystick Module I have in my possession ...
1
vote
0answers
26 views
Coupling vs Decoupling filter / Filter in-the-signal-path vs filter on-the-signal-path
I'm looking at designing an active analog filter module to be used/reused in my designs. Correct me if I'm wrong, but you can design a filter that is in the signal path that has the same frequency ...
2
votes
1answer
102 views
Shut down circuit sections
I am currently devising ways to shut off different circuit sections in an embedded circuit. Here is a breakdown of what I am doing and my initial idea. Currently I have a micro controller which is ...
0
votes
2answers
61 views
differential input signal on unipolar supply ADC
As you all know, ECG is composed of PQRST wave. In that, Q and S segments are negative.
With reference to that, could anyone please explain how differential signals can be fed to an ADC which is ...
0
votes
1answer
72 views
Is it better to study semiconductors before electronics devices? [closed]
In my university I have no semiconductor course to study. They make us begin studying electronics devices right away (Topics in microelectronics by sedra). My question is should I study semiconductors ...
-5
votes
0answers
41 views
Reconfigurable circuit for rectifiers/charge pumps [duplicate]
Basically, RFID tag is a passive device. It harvests the energy from RFID reader. So, rectifier is the basic block in the passive tag. Rectifier's dc output voltage is then given to regulator, ...
2
votes
1answer
42 views
What is difference in the design steps between designing an OPAMP vs Miller-OPV?
I am given a task as:
Design an operational amplifier (Miller-OPV, 0.35μm) according to the
introduced design plan and the given lab technology that meets the
following specification:
What ...
2
votes
1answer
35 views
ADS192R respiration rate detection
In SBAA181 - Respiration Rate Measurement Based on Impedance Pneumography (page 8/11), what is the purpose of having potential divider of 10ME (R1=R2)?
the reference of these resistors are ...
6
votes
3answers
167 views
Universal smd pad size, bad idea?
I'm working on an open source filter design where the PCB can be reused for many future designs. It is based around a Sallen-key filter since a few changes to the capacitors and resistors can change ...
3
votes
4answers
122 views
Amplifier analog design - how to effectively do it when gain varies so much?
For example, I was thinking about building a small current sensing device that has an display to measure small current draws on some of my circuits. The design would be such that a very small ...
2
votes
3answers
139 views
Reading 5v analog to 3V PIC
I'm trying to figure out how to connect a linear pushbutton sensor to a Microchip PIC.
The problem is: the sensor has an 5V output and only 3 pins (VDD, Sensor and GND). I need to power the sensor ...
