Velleman K1823 Bedienungsanleitung

K1823

ILLUSTRATED ASSEMBLY MANUAL H1823IP-1

The easywayto power your

projects.

1 A POWER SUPPLY

Specifications

Great to power your projects and save money on

batteries

Suitable as an adjustable power supply for experiments

Control DC motors, low voltage light bulbs, …

Short-circuit, thermal and overload protection

Dimensions : 52x30mm (2.1” x 1.2”)

Features

Just add a suitable transformer (see table)

Great to power your projects and save money on batteries

Suitable as an adjustable power supply for experiments

Control DC motors, low voltage light bulbs, …

Specifications :

 Preset any voltage between 1.5 and 35V

 Very low ripple (80dB rejection)

 Short-circuit, thermal and overload protection

 Max input voltage : 28VAC or 40VDC

 Max dissipation : 15W (with heatsink)

 Dimensions : 52x30mm (2.1” x 1.2”)

Features & Specifications

Choose the right transformer

Max DC output voltage Transformer rating

3..5V 9VAC / 15VA

5..8V 12VAC / 30VA

8..13V 15VAC / 30VA

13..15V 18VAC / 30VA

15..18V 22VAC / 30VA

18..22V 24VAC / 50VA

22..35V 28VAC / 50VA

Assembly hints

1. Assembly (Skipping this can lead to troubles ! )

Ok, so we have your attention. These hints will help you to make this project successful. Read them carefully.

1.1 Make sure you have the right tools:

 A good quality soldering iron (25-40W) with a small tip.

 Wipe it often on a wet sponge or cloth, to keep it clean; then apply solder to the tip, to give it a wet look. This is called ‘thinning’ and will protect the tip,

and enables you to make good connections. When solder rolls off the tip, it needs cleaning.

 Thin raisin-core solder. Do not use any flux or grease.

 A diagonal cutter to trim excess wires. To avoid injury when cutting excess leads, hold the lead so they cannot fly towards the eyes.

 Needle nose pliers, for bending leads, or to hold components in place.

 Small blade and Phillips screwdrivers. A basic range is fine.

For some projects, a basic multi-meter is required, or might be handy

1.2 Assembly Hints :

Make sure the skill level matches your experience, to avoid disappointments.

Follow the instructions carefully. Read and understand the entire step before you perform each operation.

Perform the assembly in the correct order as stated in this manual

Position all parts on the PCB (Printed Circuit Board) as shown on the drawings.

Values on the circuit diagram are subject to changes, the values in this assembly guide are correct*

Use the check-boxes to mark your progress.

Please read the included information on safety and customer service

* Typographical inaccuracies excluded. Always look for possible last minute manual updates, indicated as ‘NOTE’ on a separate leaflet.

0.000

1.3 Soldering Hints :

1- Mount the component against the PCB surface and carefully solder the leads

2- Make sure the solder joints are cone-shaped and shiny

3- Trim excess leads as close as possible to the solder joint

DO NOT BLINDLY FOLLOW THE ORDER OF THE COMPONENTS ONTO THE TAPE.

ALWAYS CHECK THEIR VALUE ON THE PARTS LIST!

REMOVE THEM FROM THE TAPE ONE AT A TIME !

R1 : 120 (1 - 2 - 1 - B)

2. Resistor R...

Construction

D1 : 1N4007

D2 : 1N4007

D3 : 1N4007

D4 : 1N4007

1. Diodes. Watch the polarity !

D...

CATHODE



RV1: 4K7

3. Trim potentiometer

SK1

SK2

5. Terminal blocks

C1 : 0,1µF, 100nF (104)

4. Capacitors.

c... VR1: LM317

It has not to be cooled if used for

small powers.

7. Voltage regulator

C2 : 1µF



C3 : 10µF

6. Electrolytic Capacitor.

Watch the polarity !

C...

C4 : 2200µF

8. Electrolytic Capacitor.

Watch the polarity !

C...

Connection example

9. Connection example

Execute the connection as

depicted in the figure. Connect

the alternating voltage of a

transformer with the ‘AC IN’

connections. Connect the

output voltage with the ‘+’ and

‘-‘ connections. Set the desired

output voltage with trimmer

RV1. Mount VR1 on a suitable

heatsink for applications

requiring more power.

Be sure to provide sufficient

electric insulation: fit an

insulator and a plastic

insulation ring between the

VR1 and the heatsink because

the metal side of the VR1 is

electrically connected with the

rest of the circuit.

Replace the trimmer with a

potentiometer of the same

rating if you want to use the

circuit as a permanently

adjustable power supply.

Fig. 1.0

FUSEHOLDER

FUSE 250mA T

STRAIN RELIEF

POWER

ON-OFF SWITCH

TRANSFORMER

ENCLOSURE

Mica washer

TO220

isolator

DC OUTPUT

DC output adjust

SILICON

GREASE

PCB & diagram

11. Diagram

10. PCB layout.

5410329 310363

Modifications and typographical errors reserved - © Velleman nv. H1823IP’1 (rev.6)

VELLEMAN NV

Legen Heirweg 33, B-9890 GAVERE

Belgium (Europe)

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