Test pencil for identifying safe and dangerous voltage

• Main Authors: QIU GUIPING, YU WENLONG, HUANG BING, LV GUANLI, ZHANG SHUNBAO
• Format: Patent
• Language: Chinese; English
• Published: 11.06.2024
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The utility model discloses a test pencil for identifying safe and dangerous voltage, which comprises a test contact, a current-limiting resistor, a neon tube and a hand touch electrode which are connected in sequence to form a dangerous voltage detection mechanism, the second module comprises a shunt resistor and an identification electrode which are connected with each other, and the shunt resistor is connected with the test contact to form a safety voltage detection mechanism; the third device comprises an insulating shell, the dangerous voltage detection mechanism and the safe voltage detection mechanism are both arranged in the insulating shell, and the test contact, the hand touch electrode and the identification electrode are all partially exposed out of the insulating shell; wherein the resistance value of the shunt resistor is greater than or equal to that of the current-limiting resistor. The test pencil can solve the problem that an existing test pencil cannot distinguish dangerous electric shock v