How to use the non-contact Electric Sensor Test Pencil to test the inspection lamp to detect the quality of the fluorescent tube
The quality of the fluorescent tube is determined by inspection of the lamp. The end of the lamp tube is connected to the inspection lamp, and the 222 power supply is connected across it. The lamp is on and the tube glows again, and the end of the tube under test is still good.
The tube has no glow tube end, and the filament electrons are exhausted. Repeated touch and so on does not light, the tube end filament has been broken.
