Total solder points: 92 Difficulty level: beginner 1 2 3 4 5 advanced RELAY CARD K2633 uits wer circ o p h ig h circuit.
Features & Specifications The connection of a few relays to the outputs of an electronic circuit might be theoretically very simple, but practically it may lead to a very complicated matter with all possible results. This kit is an attractive and compact alternativ, fast to construct and to mount. It can be used with open collector circuits. Features: Four relay outputs, single pole invertors Max.
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.
Assembly hints 1.
Construction 1. Diodes. Watch the polarity ! D1 D2 D3 D4 : : : : 1N4148 1N4148 1N4148 1N4148 CATHODE D... 3. Transistors. T1 : T2 : T3 : T4 : BC557B BC557B BC557B BC557B 2. Resistors R... 4. LEDs. Watch the polarity! 5. PCB tabs. NC NO C + VDC - VDC 1 2 3 4 GND (4x) (4x) (4x) (2x) 6.
Construction & connection 7. Connection Connect the power voltage of the relay to the 9V DC points. This voltage needs not to be stabilised. The connection of the loads to the relays is very simple : at the outputs the name of the contact is given. • C stands for the common contact. • NC for the contact of the inverter that is closed in rest. • NO for the normal open contact. In most cases you will only use C and NO.
PCB & Diagram 8. PCB layout. 9.
VELLEMAN Components NV Legen Heirweg 33 9890 Gavere Belgium Europe www.velleman.be www.velleman-kit.com Modifications and typographical errors reserved © Velleman Components nv. H2633IP - 2004 - ED1 (rev.1.