How to create Circuit of 6V x 1A power Supply

 In order to perform experiments and projects involving electricityou will need

a source of voltage. Voltage requirements for common projects, such as the

ones in this book, depend upon their applications, and typically range from a

few milliamperes to one or two amperes.

lnstead of using a battery you can use a circuit called a power supply.

The power supply we show here can be used to provide 6V x 1A regulated

output to the experimental and practical circuits described in this book. The

output voltage is fixed by the lC.

Figure l shows the schematic diagram for this power supply. lOl is a voltage

regufator, #7806. The "06" indicates that it is a 6-volt regulator.

Figure 2 shows the components layout, using a terminal strip as chassis.

The complete project can be assembled in a small plastic box. The integrated

circuit should be mounted on a heatsink. You can also add an LED in series

with a 470 ohm resistor, wired in the output of the circuit to indicate that it is

on.

External circuits can be connected to the power supply with alligator clips.

Position of the polarized pieces, such as diodes, the lC, and electrolyticapacitors, must be observed.

The transformer isn't a critical part of this project. Types with a secondary coil

ranging from 7.5 to 12 volts and currents between 500 mA and 14 can be

used.

Parts List - 6-Volt Power Supply

lOl - 7806 positive three-terminal regulator

T1 - Transformer: primary 1 17 VAC ; seconda ry 12+12Y x 1A

D1,2 - 50V x 1A - 1N4002 or equivalent silicon rectifier diodes

C1 - 1,000 uF, 25 WVDC electrolytic capacitor

C2 - 10 uF, 12 WVDC electrolytic capacitor

S1 - SPST switch