Instructions for the Use of the Induction Test Pen
The induction test pen can measure AC as well as DC. When measuring a DC battery, touch the other pole of the battery with your other hand. The range shows 12v, 24v, 36√, 110v, 220v. When measuring the presence or absence of electricity, it can directly display the voltage. It can be used in the same way as the old-fashioned neon bulb electric pen. When measuring the breakpoint of the cable, connect the suspected wire to the live wire, stick the electric pen contact on the cable and move it. Where there is no break, the electricity The pen will display 12v. When it reaches the breakpoint, the display will disappear. Move forward and backward to determine the position, that is, find the breakpoint. This is the biggest advantage of the inductive pen over the old neon bulb test pen, but remember to connect other wires to the neutral line. , otherwise, due to the induction effect, there will be electricity everywhere, and the breakpoint cannot be found, and it may not be possible to detect good quality new cables.
The induction test pen is a good thing, convenient and practical. It is a good measuring tool for people who are not used to using multimeters. The picture above is one I used many years ago, and the picture below is its internal circuit.
It can measure both AC and DC. When measuring a DC battery, touch the other pole of the battery with your other hand. The range displays 12v, 24v, 36√, 110v, 220v. When measuring the presence or absence of electricity, it can directly display the voltage. It can be used in the same way as the old-fashioned neon bulb electric pen. When measuring the breakpoint of the cable, connect the suspected wire to the live wire, stick the electric pen contact on the cable and move it. Where there is no break, the electricity The pen will display 12v. When it reaches the breakpoint, the display will disappear. Move forward and backward to determine the position, that is, find the breakpoint. This is the biggest advantage of the inductive pen over the old neon bulb test pen, but remember to connect other wires to the neutral line. , otherwise, due to the induction effect, there will be electricity everywhere, and the breakpoint cannot be found, and it may not be possible to detect good quality new cables.
