Electronic Stethoscope Circuit Diagram

This circuit uses op amps to greatly amplify a standard stethoscope and includes a low pass filter to remove background noise.
Electronic stethoscope circuit diagram. Schematic for electronic stethoscope. Recuperando baterias sulfatadas art146 chris electronic. Then it is amplified by q1. Battery charger circuit lead acid battery charger ac circuit circuit diagram arduino electronic engineering electrical engineering power supply circuit ham radio antenna.
In combination with r1 r4 vr1 and c1 are amplifiers as common emitter amplifier. Mic1 is an assembly made out of a stethoscope head and electret mic. The heartbeat sounds catched by electret microphone and then the amplifier amplify the signal. The piezo speaker will detect the heart beats.
The circuit diagram of electronic stethoscope is shown below. This electronic stethoscope circuit uses a piezo sounder from a musical greetings card or melody generator as a microphone. 2 use a shielded cable for the microphone as shown on the schematic. The tone control stage is built around the opamp 741 and with the help of the associated rc networks and the pots.
Electronic stethoscope circuit diagram. A thick jar lid can be used as a stethoscope head. The circuit diagram of the proposed electronic stethoscope amplifier is designed using two stages one consisting of the opamp based tone control circuit and the integrated proper amplifier stage. Misc board wire sockets for ics knob for pot stethoscope rubber tube.
It s work is similar to general home audio system. The operation of the circuit is very simple. Standard stethoscopes provide no amplification which limits their use. 3 fasten the microphone to the stethoscope head with a rubber isolating sleeve or use a short piece of rubber tubing on its nipple.
An electronic stethoscope is used to listen to your heartbeat and you would normally use a listening tube or stethoscope. Stethoscopes are not only useful for doctors but home mechanics exterminators spying and any number of other uses. The input and output signals both share a connection to the emitter. The main purpose of the stethoscope is to hear the heartbeat of the human body or animals.
This circuit uses a piezo sounder from a musical greetings card or melody generator as a microphone. This is an electronic stethoscope circuit diagram. 1 assemble the circuit using veroboard stripboard or a pcb. Be careful with the volume as excess noise level may damage your ears.