What component creates the voltage in a pacemaker?

The pacemaker battery is the key component responsible for generating the voltage necessary for the device to function. In a pacemaker, the battery typically consists of lithium or another suitable material that provides a continuous source of electrical energy. This energy is critical for powering the pacemaker's internal circuits, which include the sensors and stimulators that send electrical impulses to the heart.

When the pacemaker detects that the heart is beating too slowly or irregularly, it uses the voltage supplied by the battery to generate electrical signals that stimulate cardiac muscle contraction. This mechanism is essential for maintaining an effective and regular heart rhythm in patients who rely on pacing support.

While other components, such as the circuit board and capacitors, play significant roles in managing the signals and ensuring the pacemaker operates correctly, they do not create the voltage. The battery serves as the primary source of energy needed to power the entire device and carry out its essential functions.