is there any one to help me regarding automotive electric fans?
here is image of ckt diagram (http://www.next.gr/automotive/automotive-circuits/...
. why we use current mirror and whats its function.
i just make it on protoboard by giving 9 volt from cell to all +ive oints and -ive to all gnd ponts . is there any difference by using these +ive and -ive volts.rather 12 volt from ignition and chasis grnd.?
* secondly i have no TS6178 so i just use variable resister ????? when i shot emitter of Q1 motor stops but when i open it moter is on.is TS6178 PTC or NTC:( kindly help me out this projrct problems?
here is link ,kindly follow this i need urgent help in this project. thanks to replyers and yahoo answer
- PhilomelLv 77 years agoFavorite Answer
1 your link doesn't work. 2 a current mirror is used as a reference to a stable voltage. The 12V supply in a car is not stable . It varies from ~10.5V on starting to as high as 16V.
A stable ref less than 9 volts is used because it is independent of Batt.
- 7 years ago
Your link doesn't work.