This power supply circuit using IC 78LXX , with three pin. In, out
and ground. this ic using internal limitation current output and
protection load thermal for ic transistor secure from damage. In
practical ,this ic 78LXX can damage if over voltage on input. The
voltage settings for positive and negative output between 2.6 volt until
24 volt. And output current between 100 mA until 5 Ampere.
This Power Supply stabiliser is very worth for your Project and for hobbyist .
List of 78LXX and 78XX :
Imax = 100 mA
Uout Type IUtr (RMS) C1
(min) (max)
5V 78L05 6.4 V 9.6 V 1000 uF/16 V
6V 78L06 7.3 V 10.3 V 1000 uF/16 V
8V 78L08 9.6 V 12.0V 470 uF/25 V
10V 78L10 11.0 V 13.4 V 330 uF/25 V
12V 78L12 13.1 V 15.2 V 330 uF/25 V
15V 78L15 15.2 V 17.3 V 330 uF/25 V
18V 78L18 17.5 V 19.5 V 330 uF/25 V
24V 78L24 21.9 V 23.7 V 330 uF/25 V
Schematic Diagram :
We
can use breadboard to test before you solder in PCB. We can use
universal dot matrix PCB for this project , or we can use PCB as design
shown for the components.
Original Sources From Elektor Electronics.
On the next article, I will post PCB design, testing on breadboard, and also Kit with available for you to purchase.
On this Project , we will discuss about Led Name , for 8 Alphabet or more. Using IC 74LS164 TTL , 8 bit parallel out serial shift register. And Using IC 555 timer. Also transistor 9013 or BC 107.
The circuit as below :
Led Configuration using Transistor BC 107 / 9013 :
Guidance for make one alphabet .
For making 1 alphabet , we using several LED parallel / Series with one transistor . We using power supply 15 Vdc , so maximum LED series is Six, in one line. For example for 18 LED for 1 alphabet, we use this configuration :
Power Supply 5 V using IC 7805.
