PRIMEDIC DefiMonitor XD100xe(M290) Capacitor QL232EW195V21A 195uf 2300 VDC

Capacitors Brief introduction

Capacitors play an extremely important role in defibrillators . The capacitor in a defibrillator is able to collect the continuous low flow of current, store what it has collected, and then release it as the brief large flow of current needed for defibrillation. The basic design of a capacitor is extremely simple. It consists of two parallel flat metal plates

Why do we use capacitors in defibrillators and not batteries

Batteries usually store energy using electrochemical reactions. These reactions are limited by how quickly they can transfer energy. A typical lead-

acid car battery, for example, can only absorb a certain amount of energy. After a certain point, it will begin to decompose, producing hydrogen

gas and capable of igniting with free oxygen in the air. An analogy is a dam-like gravity battery with a high level of gravitational energy. Opening

the door allows the water to escape, allowing the circuit to continue operating at constant voltage for a month. However, if the voltage is much

higher, you may never get past that voltage level because there is no way to use all the energy. It's like a dam suddenly fully opened. Therefore,

there is a clear limit to the discharge rate.

Capacitors store large potential differences more efficiently. However, they are usually not able to maintain tension for long periods of time. In practice, capacitors use electric fields and various geometries to store energy.

So if you only need power for a short period of time, you can use a capacitor to reduce the battery size. Basically, capacitors store and release a higher voltage than the battery terminals. Otherwise you'll need a bigger battery, but with a bigger battery you'll get more voltage than the capacitor. Find the "Ampere Hours" of your battery. Batteries store more energy than capacitors, but capacitors can produce higher voltages. Also check the specific energy or energy density of different types of batteries and then look at capacitors.

Capacitors also have limited energy, so they can prevent circuit breaks that allow energy to flow continuously. Batteries may require more complex circuitry to get short voltage spikes and then bring them down and back up quickly. There may be sparks, noise, etc. A capacitor allows the circuit to remain closed and allow the capacitor to discharge potential.

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