How to Design Schematic Circuit of 6V from 12V Batteries

 With this adapter you can power 6 volt (up to 1A) devices, such as recorders,

CD players, calculators, radios, battery chargers, etc., from your car battery.

The current adapter is plugged into the vehicle lighter socket and is small

enough to be housed in a very compact plastic box.

Only four components are used. The lC determines the output voltage and

should be mounted on a heatsink. Capacitors are polarized components, so

you must observe their position when mounting.The fuse is very important in

order to protect the device and car wiring against shorts.

Output varies according to the device you are applying power to. DC extension cables with plugs to fit the device to be powered should be used. Take

care with the output poles. Check if your device has a positive or negative

pole in the central terminal.

The schematic diagram of the 12V to 6V x 1A converter is shown in Figure 1.

The principal component is lC1, a 6V voltage regulator that operates with

input voltages ranging from I to 35 volts.

Components layout is shown in Figure 2. All the components can easily be

housed in a plastic box.

The integrated circuit can be changed to alter the output voltage.You can use

a 7809 for 9V x 1A output or a 7805 for 5V x 1A output.

It is very important that no parts of the components used in this circuit touch

one another. The lC has short-circuit and thermal protection.

Parts List - 6 Volts From 12V Batteries

lC1 - 7806 Integrated circuit

C1 - 1,000 uF, 16 WVDC electrolyticapacitor

C2 - 100 uF,12 WVDC electrolyticapacitor

Fl - 2A fuse