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Velleman K2579 Assembly Manual
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Velleman K2579 Assembly Manual

Universal start/stop timer
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Total solder points: 49
Difficulty level: beginner 1  2  3  4  5  advanced
ILLUSTRATED ASSEMBLY MANUAL
UNIVERSAL START/STOP TIMER
K2579
Specifications

Relay output with switchover contact.

Power supply : 12VDC regulated.

Typical active current : 55mA.

Relay output : 2A/240V max.
Dimensions : 38x69mm / 1.5"x2.7".

H2579IP-1

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Summary of Contents for Velleman K2579

  • Page 1 Total solder points: 49 Difficulty level: beginner 1  2  3  4  5  advanced UNIVERSAL START/STOP TIMER K2579 Specifications  Relay output with switchover contact.  Power supply : 12VDC regulated.  Typical active current : 55mA.
  • Page 2 VELLEMAN NV Legen Heirweg 33 9890 Gavere Belgium Europe www.velleman.be www.velleman-kit.com...

  • Page 3: Specifications

    Features & Specifications The K2579 is a basic timer with relay output for time intervals of up to 15 minutes. Set the desired delay with the trimmer. The maximum delay can easily be lengthened and the timer can be stopped and restarted at any time.

  • Page 4: Assembly Hints

    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. •...
  • Page 5 REMOVE THEM FROM THE TAPE ONE AT A TIME ! DO NOT BLINDLY FOLLOW THE ORDER OF THE COMPONENTS ONTO THE TAPE. ALWAYS CHECK THEIR VALUE ON THE PARTS LIST!
  • Page 6 Construction 1. Diode. Watch the polarity ! 3. IC socket. Check the 6. Transistor position of the notch!  T1 : BC547B  D1 : 1N4148 D... CATHODE 7. Electrolytic Capacitor.  IC : 8p. Watch the polarity ! 2. Resistor 4.
  • Page 7 Construction 9. Push buttons  SW1 : START  SW2 : STOP 10. Relay  RY : VR15M121C RY... 11. IC. Check the position of the notch!  IC : NE555...

  • Page 8: Snubber Network

    Connection example 12. Connection example 12V DC 300 mA Snubber network* 100E/1W B or C 220nF/400V *see hook-up and use...
  • Page 9 Hook-up and use 13. Hook-up and use  Connect the unit with a 12VDC regulated power supply as shown in the example.  Turn the trimmer all the way counterclockwise.  Push the START button. The relay will be activated momentarily. ...
  • Page 10 10. PCB layout. 14. PCB layout.
  • Page 11 Diagram 15. Diagram POWER +12V 100n 1N4148 VR15M211C DISC BC547 TRIG NE555 100µ...
  • Page 12 Modifications and typographical errors reserved - © Velleman nv. H2579P - 2012 - ED1 (rev.3) 5 4 1 0 3 2 9 3 1 1 3 8 4...