Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
okay guys ! got this thing to work. used pull down resistor and a negative voltage detector and it works.
only thing is that the voltage only saturates for like 2 seconds (-5 volts) then flat lines. then once the lead is placed on again a positive saturation goes on for like 5 seconds (+5...
i want to saturate the voltage negatively. so when a lead comes undone some how the pull down resistor will saturate it negativly so that my comparator will pick it up.
currently have the comparator set so if my signal drops bellow -2.5V the LED lights up as a warning.
anybody know how i can...
Hey guys im trying to build a lead fault indicator by sending a small amount of current (bellow .01uA)
and once the continuity is broken the signal is saturated and a window comparator picks this up and sets off an alarm. Ill be using a pull up and pull down resistor to put the current into the...
Alligator clips. Been in the lab now for a week trying to get some sort of signal out of this AD620 i even ditched the right legt circuit to try and get the signal working by just changing the gain by different resistance between pin 1 an 8 and inputing the LA and RA into the inputs of the...
so i built the exact circuit. i tried plugging a patient simulator using the schematic and all it shows is noise with or without the patient simulator.
also used as little and short cables as possible to reduce noise. what could be the issue ?
okay so i did some more research and found out some stuff. i will have to use voltage regulators to help me get the voltage and a negative voltage regulator.
UA78H05 for a 5 volt regulator and a IP79051H for a negative 5 volt regulator. And some 10uF at 25V caps.
Now im just wondering how to...
Hey guys! just picked up a triad VPT30-1670 toroid type transformer which steps down the voltage to 15 volts.
I need to power up some op amps such as AD620 for my ecg im building.
I know you have to use a bridge rectifier circuit just wondering what componets i should build with and how...
Thank you!
When looking at the notch filter to eliminate the 60hz noise the book shows 2, OPA2111BM.
Is there any better components that can be used for a notch filter?
Hi all, im enrolled in biomedical engineering and in last year. Our year long project is to build and design our own ECG. So my group is in the early stages of building.
My question this week is with building of the Right leg circuit. We are using the AD620 because it complys with all AMII...
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