Скачать с ютуб WHAT IS FUSE AND MOV | OVER LOAD PROTECTION | OVER VOLTAGE PROTECTION | CIRCUIT SAFE DUE TO FUSE MOV в хорошем качестве

WHAT IS FUSE AND MOV | OVER LOAD PROTECTION | OVER VOLTAGE PROTECTION | CIRCUIT SAFE DUE TO FUSE MOV

Disconnect the device from the electrical system. Remove the fuse from its holder. In some cases you may need a small screwdriver to unscrew the fuse holder cap. Look at the fuse wire. If there is a visible gap in the wire or a dark or metallic smear inside the glass then the fuse is blown and needs to be replaced. Technically speaking, a fuse doesn't actually go bad -- a blown fuse has actually performed its job exactly as intended. That's a good thing, but it implies that there was something wrong elsewhere in the circuit. A Metal Oxide Varistor (MOV) is a protection component used in power supply circuits that is powered directly from AC mains. It is used to protect the circuit from high voltage spikes by varying its resistance.