EEG (and ECG) Amplifier Circuit Simulation
YOU HAVE TO HAVE LTSPICE IF YOU CAN NOT PLEASE DO NO WAST MY TIME
PROJECT: EEG (AND ECG) AMPLIFIER CIRCUIT SIMULATION
Useful resource: https://www.instructables.com/DIY-EEG-and-ECG-Circuit/
On this challenge, we might be simulating an EEG (or ECG) amplifier circuit utilizing LTSpice. Different circuit simulation software program can be utilized.
Determine 1. Schematic of an EEG amplifier circuit, which will be discovered within the useful resource hyperlink above.
Spice mannequin for AD620N chip that's used within the circuit.
EEG Venture with sources & step-by-step directions
https://github.com/ryanlopezzzz/EEG (Different model of the amplifier circuit, proven under.)
Determine 2. Schematic of an alternate model of the EEG amplifier circuit.
Use the above hyperlink underneath 'Extra Assets' that seek advice from producing a spice mannequin for an AD620N chip. The hyperlink explains methods to create a brand new circuit image in LTspice for the AD620N chip.
For the enter sign to the amplifier circuit, there are two sinusoidal inputs. For the amplitude of the sinusoids, vary of values can be round wherever from 10mV to 100mV. For instance, one of many sinusoidal inputs will be 20mV and the opposite sinusoidal enter will be 18mV or 19mV. The amplifier amplifies the distinction of the 2 sinusoids.
The frequency of the enter sign can vary wherever from 10Hz to 30Hz.
When organising the transient evaluation in LTspice, the cease time will be wherever from 1us (microsecond) to 5us (microseconds). You may go away the step measurement and different parameters clean. Simply the cease time is enough. Relying on the pc, CPU, and RAM, the simulation time can range. When working the simulation, by urgent the ESC key, you possibly can view the output voltage in real-time as LTspice is working the simulation. (Notice:5u stands for five microseconds and 5m stands for five milliseconds in LTspice.)
After working the simulation, you possibly can probe the output node and/or the node the place the audio connector goes that connects to the speaker.
Take a screenshot of this output graph.
Additionally, probe the enter indicators, and plot the distinction of the enter indicators. Or, you possibly can merely plot the 2 enter indicators individually.
Copy and paste the screenshots of the next:
Output voltage graph
Enter voltage graphs (or a graph of the distinction of the enter voltages)
A brief one sentence description underneath every determine describing what the that determine is about. (E.g. Beneath the output voltage graph, 'Graph of output voltage of xx amplifier circuit that amplifies the distinction of two enter sinusoidal indicators with amplitudes of 20mV and 18mV and frequency of 10Hz.')
Phrase or pdf doc to the Task folder.
LTspice simulation file
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