| ??? 09/03/08 06:53 Read: times |
#157921 - RFID device protection Responding to: ???'s previous message |
I want to protect the RFID device which is usually up to 100 meters from the power supply and open the door with doop opener. The supply has a thermal fuse, but I don't know what kind. I have found out it is once for all possible to break the fuse and it is unable to change it because of the close shut. And that is why I want to use something what will be able to protect the supply in the case of careless manipulation... Maybe it is a wrong way... Maybe we should try to find more suitable power supply... |
| Topic | Author | Date |
| Polyswitch... | 01/01/70 00:00 | |
| First, what do you intend to protect? | 01/01/70 00:00 | |
| preemptive... | 01/01/70 00:00 | |
| AC vs DC | 01/01/70 00:00 | |
| Polyswitches vs fuses | 01/01/70 00:00 | |
| re polyswitches a 'trick' | 01/01/70 00:00 | |
| yes, but.... | 01/01/70 00:00 | |
| the \'thing\' will recover | 01/01/70 00:00 | |
| Again, what do you want to protect??? | 01/01/70 00:00 | |
| RFID device protection | 01/01/70 00:00 | |
Your transformer is much too weak... | 01/01/70 00:00 |