Danger of damaging the internal components of the stylus
What happens to a stylus that measures firewire with a bad resistor? This chance of electrocution is relatively high, because whether the internal resistor resistance decreases or breaks, it will allow people to misjudge and operate with electricity.
The internal composition of the stylus
The structure of the traditional type of pen is very simple, by the high resistance resistor, neon bubble, spring and cap composition, neon bubble in the low-voltage state does not emit light, generally more than 100v to light up, if it is not a fall is very difficult to damage.
High resistance resistor resistance value varies, theoretically greater than 500k ohms can meet the demand, but we hope that the greater the resistance value the better, of course, can not be infinity, then open circuit, in the measurement of the charged body does not glow, easy for us to produce a misjudgement, so the electric pen is the need for frequent inspection and maintenance.
So what happens when the resistance inside the electric pen is lower than the set value? Obviously, the electric pen in contact with a charged body when the human body is easily electrocuted, I believe that everyone, especially electricians have lessons in this regard.
The danger of damage to the stylus
Resistance of infinity generated by the misjudgment, we may think that the electrical appliances are not electric, in the maintenance operation of the risk of electrocution, causing great harm to the human body.
Resistance of less than 500k ohm stylus in measuring the charged body, will make people produce a numb feeling, if the resistance is even lower, the equivalent is the hand is touching the firewire, the consequences are very serious.
Summarize
Electricity stylus in the purchase, you can bring a multimeter to check the resistance value of the internal resistance, generally above the MΩ level, indicating that the quality is excellent, can be used for a long time.
