Abra AK-230 User manual

AK-230
DIY 30VDC Regulated Power Supply
(0-30VDC/1A)
Parts Included:
•Diodes: 1N4007(5)
•Transistors: 2N5551(1)
•Capacitors: 470uf/50V (1),
10uf/25V (1), 2200uf/50V (1),0.1uf
(CD104-2).
•Resistors: 5.1K Ohm (1), 220 Ohm
(1)
•Switch (1), 5K Mini Potentiometer
(1), 5mm 2 pin Terminal block (1).
•Speaker Terminal (1), Heat Sink for
TO220,5mm Red LED (1).
•3mm Screw (1)
•One PCB Board.
Let us Begin Soldering!
We Require Solder Iron, Flux and
Solder Wire.
This Manual does not talk more
about soldering, you need to
know basics of how to use solder.
#The PCB Side with names and symbols
is “TOP”and opposite side is
“BOTTOM”. We need to place the
components on the TOP and solder to
the BOTTOM.
Step 1: Start with Diodes. Solder all
1N4007 diodes at their respective places
on the PCB. The diode is labelled with
its name on PCB top.
* White mark on the diode indicates the
N side (Cathode).
The polarity of the Diode is important.
The White band on the diode should go
to the same direction of white band on
the PCB TOP.

Step 2: Solder all the Resistors at their
respective places. Use marking on PCB
TOP. *Direction does not matter.
Step 3: Attach Heatsink to the LM317T
Regulator with the M3 screw provided and
then solder on to the PCB Top as indicated.
Step 4: Solder 5k potentiometer and 5mm
LED on their respective indicators on the
PCB top. For LED, The bigger lead goes
into +Ve. Please follow as shown in the
image below.
Step 5: Solder the Capacitors. In the Kit
there are two types, Polarized and ceramic.
The polarized should be soldered carefully.
* The marking on the polarized capacitors
indicates for +Ve and -Ve. Match the +Ve
and -Ve to the marking on the PCB. Solder
the ceramic capacitors in any direction.
Polarised Capacitors in the Kit:2200uf/50V,
470uf/63V,10uf/25V.
Ceramic Capacitors in the Kit: 104p(0.1uf)
Step 6: Now, solder the Terminal blocks
with the screw holes facing outward.
There are two terminal blocks in the kit.
One is for input(5mm) and other speaker
terminal block is for output. Follow image
below.
**Please fill the hole of speaker terminal
block with solder on the back of the PCB.
The hole is big for some of the terminal
blocks in the kit.
Step 7: Solder the 2N5551 transistor and
fuse at their respective places. For transistor,
follow the logo on the PCB board. Whereas
for fuse, no directions.
Step 8: Solder Toggle Switch provided in the
kit. Sometimes the drill hole will exactly fit
the switch, you need to press hard to fix in to
the holes.
Now, its time to Connect your input and get
output voltage. Use potentiometer to increase
or decrease the voltage. You can give AC or
DC input between 5-30V to get DC output
between 0-30VDC.
Note: Remember, as it works with Linear
regulator, due to heat loss you much give
higher input voltage than require output
voltage. For example, you need to give 25V
AC or DC to get output between 0-23VDC.

Precautions:
•Before Powering on, ensure that the excess lead lengths are cut off on the bottom side of the PCB and there are no
shorts or components leads touching each other.
•Reverify the direction of components soldered. It should be as per instructed.
Note: This Kit is not for beginners and be careful before connecting transformer. Any fault soldering will cause damage to
the board and components.