Optimizing EMG Circuit Design: Tips and Parameters for Improved Performance

[gokul karat]

HAI EVERYONE

i have designed a circuit for emg detection but its not working perfectly. may i know the parameters that to be considered in each stages and what should be the value of each parameters in each stages. (e.g. gain at IN stage =20).

thank you..

 

[tech99]

HAI EVERYONE

i have designed a circuit for emg detection but its not working perfectly. may i know the parameters that to be considered in each stages and what should be the value of each parameters in each stages. (e.g. gain at IN stage =20).

thank you..

What is emg? Thank you.

 

[Nidum]

Possibly Electromyography .

Warning : Definitely not a subject that can be experimented with safely by someone with no medical or technical knowledge .

 

[CWatters]

Warning : Definitely not a subject that can be experimented with safely by someone with no medical or technical knowledge .

For safety never connect yourself to anything mains powered either directly or indirectly. It's much safer to use batteries (totalling less than 36V) to power any home made projects of this sort.

 

[tech99]

For safety never connect yourself to anything mains powered either directly or indirectly. It's much safer to use batteries (totalling less than 36V) to power any home made projects of this sort.

I seem to remember connecting my arm and also my heart to the audio amplifier of a tape recorder when I was in my teens and I could see the voltage from muscle contractions on the magic eye and hear the noise. I also tried it on my brain with no result (!). But it was a mains amplifier! I just took a knowing chance, as we used to play around with high voltages all the time then.

 

[berkeman]

i have designed a circuit for emg detection but its not working perfectly. may i know the parameters that to be considered in each stages and what should be the value of each parameters in each stages. (e.g. gain at IN stage =20).

Welcome to the PF.

Where did you get the circuit schematic? How is it powered? What is your background in electronics? What is your background in medical electronics? What are you planning on doing with this EMG device once you get it working well?

 

[CWatters]

I seem to remember connecting my arm and also my heart to the audio amplifier of a tape recorder when I was in my teens and I could see the voltage from muscle contractions on the magic eye and hear the noise. I also tried it on my brain with no result (!). But it was a mains amplifier! I just took a knowing chance, as we used to play around with high voltages all the time then.

Think I probably did the same. Commercial products like tape recorders and amps should be/are designed so you can safely touch connectors.

The problem with DIY mains powered equipment is that making it safe isn't as simple as buying the power supply part.