218Views2Replies
Working on the electronic stethoscope instructable. NEED HELP!
Working on the electronic stethoscope intractable. And i dont understand the circuit diagram for where the 9v battery is suppose to go?
https://www.instructables.com/id/Electronic-Stethoscope/step3/Build/
Comments
8 years ago
You're more likely to get a response from the author if you post your question directly on that Instructable.
8 years ago
Put the positive of the 9V battery at the + sign on top.
Put the minus of the 9V battery on the bottom line where the ground
symbol is located just below the headphones text.
A