| ??? 11/21/14 03:39 Read: times |
#190385 - Let me explain a little... Responding to: ???'s previous message |
Car amp draws lots of current, this is right.
But, car amps have a special input to switch it on and off, it is called "remote" AFAIK Car amps on its power socket has 3 inputs: positive, negative and remote. This remote input is low power. When there is 12v in remote input car amp is on. I dont know how much current is involved, I have searched and not found but I believe it is lower than 200mA, probably just enought to switch a small relay inside the car amp. Mahmood, I cant find any small P channel MOSFET, the ones I found (over internet) were expensive. AFAIK I need a P channel one. (sorry for any mistake). |
| Topic | Author | Date |
| Car amp remote signal | 01/01/70 00:00 | |
| use a relay | 01/01/70 00:00 | |
| There is other option than relay? | 01/01/70 00:00 | |
| Hi Power | 01/01/70 00:00 | |
| Let me explain a little... | 01/01/70 00:00 | |
| plenty, but .... | 01/01/70 00:00 | |
| I understand... | 01/01/70 00:00 | |
| Little update about involved currents | 01/01/70 00:00 | |
| if it is 12V hi/lo and less than 200mA | 01/01/70 00:00 | |
| Amp needs 12v for switching | 01/01/70 00:00 | |
| 2 transistors | 01/01/70 00:00 | |
| You mean this one? | 01/01/70 00:00 | |
| Yes | 01/01/70 00:00 | |
| Thank you! | 01/01/70 00:00 | |
follow the logic | 01/01/70 00:00 |