3 volt car adapter by LT1074
This 3 volts Car Adapter circuit is based on a standard LT1074CT switching regulator IC. The schematic shows the LT1074CT used as a positive step-down or ‘buck’ converter. The ‘switcher’ is used to convert a +12-volt car battery voltage down to +3 volts for use with the personal hi-fi’s and handheld games for the author’s two boisterous children on long car journeys. Note at under ten years of age, children will rarely be hi-fi aficionado’s and are generally not concerned with any noise generated by the ‘switcher ‘circuit. [...]
Source: http://apowersupply.com/3-volt-car-adapter-10.html
Related Links
3V power supply
Car Adapter
CAR dc converter
3.3V power supply
3V to 15V Step-Up DC Converter by LT1073
Easy power supply regulator 3.3V 1A with pnp transistor
dual power supply 3V,5V,6V,9V,12,15V with LM317,LM337
Categories: Automotive, DC converter, Power supply Tags: 3V power supply, car adapter, car dc converter
12V Switching Car PSU by UC3843 + 74LS02
Here is circuit power supply switching 12V. For Car PSU use IC UC3843 and mosfet IRFZ44N.
It is nice circuit for electronics PC MP3 Player. System control by digital circuit IC 74LS02
The next version will be much like the V2, except for a few changes:
* Added a trimmer (R13) to the R8/R9 voltage divider so it’s easy to get the exact voltage wanted and you don’t have to change components to get another output voltage.
* Redone the PCB to fit the smaller low-imp caps that are about 2/3′s the size of the original electrolytes I got a hold of (at Elfa, the stock number is 67-183-32 ).
* Added a 5V regulator to allow the GPS receiver (or headunit) to stay on, even when the computer is off.
* Added a low power on/off switch to the PSU so it’s easy to control from a computer, the car should toggle the PSU on when the ignition is turned on, the computer should turn it off when pulling the off contact high while the car ignition wire is off. The +12v car ignition signal should also be conditioned so it’s suitable for a 5v input on a CPU and made available, the standby current is around 30mA, which I hope is low enough.
State Car [On] PC [Off] Output
Running 1 X On
Shutting down/off 0 0 No change, NOT OFF
Turn off (short) 0 1 Off
Read More Source:http://dion.swamp.dk/carpower.html
Thank you.
Related Links
More circuit about switching power supply
More circuit about power supply 12v
More circuit about car adapter
Regulator 12V 10A by IC 723+2N3055
MJ2955 Switching Power Supply 12V 10Amp
LM2575 Switching Regulator 1.2-12V for Solar
Categories: Automotive, Switching power supply Tags: car adapter, power supply 12v, switching regulator
Adapter for Experimenter, Dual for Digital and Analog Supply 5V and 9V
Adapter for Experimenter, Dual for Digital and Analog Supply 5V and 9V
This circuit this from ‘Electronic Project’ Magazine, Vol-4, published by: EFY Enterprises Pvt. Ltd., New Delhi, 1995.
Related Links
More circuit Car Adapter
Regulator 5V,6V,9V,12V 1A By IC 7805,7806,7809,7812
12V to 16V DC/DC Converter with LM2577
More circuit about switching power supply
SG3525 DC Converter 12V to +35V,-35V
More circuit Battery Backup Supply
LM2575 Switching Regulator 1.2-12V for Solar
Categories: Power supply Tags: car adapter, Power supply, power_supply





or

