ASA to ALL
im working on micronontroller based circuit .... circuit will drive by car bettery 12V or 24V.... in case of using simple 7805 regulator it become hotter though i screw heat sink with that regulator. pls share me some idea to make some reliable regulator cicuit. wich remain cool upto 3 amps.
regards
At 3amps load current it is better to use smps, then conventional regulators,with specific need to improve on enery losses, uising power from a car battery.
I have the circuit.
I can send you my circuit design.
Send me your e-mail. pls
drbizzarow said:
ASA to ALL
im working on micronontroller based circuit .... circuit will drive by car bettery 12V or 24V.... in case of using simple 7805 regulator it become hotter though i screw heat sink with that regulator. pls share me some idea to make some reliable regulator cicuit. wich remain cool upto 3 amps.
regards
Hi drbizzarow, Any linear regulator (such as PQ30RV31) will get just as hot as your original 7805 design.
To reduce power dissipation (heat), you must use a switching regulator, as suggested by several folks above.
Possibly helpful: National Semiconductor has an on-line tool for designing and simulating power supplies, and for buying a kit of parts. You may need to register, but it's free.
**broken link removed**