How tasers that have 50,000V only produce a very low amperage

  • Thread starter Thread starter Amphi
  • Start date Start date
  • Tags Tags
    Amperage
Click For Summary
SUMMARY

Tasers operate at 50,000V but produce low amperage due to the principles of Ohm's Law and energy conservation. The voltage is stepped up through transformers, which results in a decrease in current, preventing lethal outcomes. The circuit created by a taser only passes through a small area of the skin, allowing for a stunning effect without causing fatal harm. The relationship between voltage and current is non-linear in this context, as the voltage drops significantly when current increases, making it crucial to understand energy dynamics in such devices.

PREREQUISITES
  • Understanding of Ohm's Law and its application in electrical circuits
  • Basic knowledge of capacitors and their behavior under load
  • Familiarity with the principles of voltage transformation using transformers
  • Concept of energy conservation in electrical systems
NEXT STEPS
  • Research the effects of high voltage and low amperage on human physiology
  • Learn about the design and function of tasers and their electrical components
  • Explore the principles of energy storage and discharge in capacitors
  • Investigate the differences between linear and non-linear electrical systems
USEFUL FOR

Electrical engineers, safety professionals, law enforcement personnel, and anyone interested in the science behind tasers and electrical safety.

Amphi
Messages
10
Reaction score
0
I don't understand how these tasers that have 50,000V only produce a very low amperage. According to Ohm's law that should kill you. Voltage divided by the persons resistance (Ohms).
Getting shocked by static electricity has 5000V, but doesn't kill you because there is no circuit involved, just the transfer of electrons to your finger, or whatever touched the metal. I understand that.
But when you get zapped by a taser isn't this capacitor discharging through your body, thus creating a circuit?
 
Engineering news on Phys.org
The voltage is stepped up through transformers. Remember you can't get something for nothing so the power output always stays the same. When the transformers increase the voltage, the current drops...thus conservation of energy wins again! And remember the circuit is only through a small portion of the skin between the two metal pins. But the voltage jolt still hits your system enough to stun you.
 
I=V/R .. only if VI <Pmax

You can't use the OHM's LAW relationship with 2 knowns to find one unknown with Tazers and similar phenomena because the VOLTAGE is not constant. The Voltage drops like a rock once current goes up. So it's not a linear relationship. A powersupply operating within it's current limits obeys a LINEAR ohm's law.. upto that limit

For example, a 1pF cap charged to 100V (if possible)... only has a small amount of energy in it.. thus it can't sustain that 100V when current goes up. The voltage will drop like a rock. It's all about energy... if the energy demand (an assumed constant V mulitiplied by the I) is within the maximum Power limit, then u can assume a constant V.

I'm making a big deal about this because I've had so many people ask me questions like this. I remember a group of people at work who were saying "The people over at the ESD department are stupid, there is no way a human body can charge to thousands of volts." OR "ISn't is cheaper to amplify with transformers instead of amplifiers circuits?"
 
Last edited:

Similar threads

Replies
5
Views
2K
  • · Replies 6 ·
Replies
6
Views
30K
Replies
7
Views
7K
Replies
3
Views
2K
  • · Replies 4 ·
Replies
4
Views
9K
Replies
26
Views
13K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 28 ·
Replies
28
Views
5K
  • · Replies 1 ·
Replies
1
Views
8K
Replies
7
Views
15K