Biomedical Engineering Capstone Design Project   

Section III: Electrical hazards

Electrocution/Shock from INSTALLED equipment:

Electrocution/Shock from TEMPORARY wiring:

Electrocution/Shock from POWER SUPPLIES or APPARATUS:

 

Electrical Shock

Injury and Death

The extent of injury accompanying electric shock depends on three factors.

Injury < 10ma         Death >10ma

Connecting to Human/Animal subjects

Do not use the lab power supplies.

ONLY 9V BATTERIES ARE TO BE USED IN THE INPUT SIDE THAT IS CONNECTED TO THE HUMAN/ANIMAL SUBJECT VIA ELECTRODES.

ISOLATION CIRCUITS AND CLAMPING DIODES ARE MANDATORY.

Transformer Isolation

Optical Isolation

Capacitive Isolation

Clamping Circuit