Total solder points: 46 Difficulty level: beginner 1 2 3 4 5 advanced 2 X 30W STEREO AMPLIFIER K4003 reo uality ste q d d a y way to project.
VELLEMAN NV Legen Heirweg 33 9890 Gavere Belgium Europe www.velleman.be www.velleman-kit.
Features & Specifications Features: This small amplifier is constructed with the TDA2616 IC, with a maximum supply capability of 2 x 15Wrms (4ohm) of 2 x 10Wrms (8ohm). The IC is thermally and short-circuit protected. Additional rectifier and smoothing filter are unnecessary, as alternating current can be directly connected to the unit. Specifications : Music power output: 2 x 30W / 4ohm RMS output: 2 x 15Wrms / 4ohm or 2 x 10Wrms / 8ohm Total harmonic distortion: 0.
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 1.3 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 REMOVE THEM FROM THE TAPE ONE AT A TIME ! DO NOT BLINDLY FOLLOW THE ORDER OF THE COMPONENTS ONTO THE TAPE.
Construction 1. Resistors 6. Electrolytic Capacitors. Watch the polarity ! 4. PCB tabs R... R1 : 8,2 R2 : 8,2 (8 - 2 - B - B) (8 - 2 - B - B) 2. Diodes. Watch the polarity ! D1 D2 D3 D4 : : : : 1N5404 1N5404 1N5404 1N5404 CATHODE D... IN GND Left IN GND Right C... LS (2x) GND (2x) VA GND VB 3. Capacitors. 6 LS Mains 5. Capacitors.
Construction 7. IC IC1 : TDA2616 IC Mount the IC with the metal back pointing at the edge of the circuit board. Mount it sufficiently high, so that the pins do NOT need to be pruned. Then mount the IC against the heatsink, as indicated in the diagram 1.0. The insulation (covered on both sides with some optional heat-conductive paste, ordernr.: therm20) mica must be inserted between the IC and the heatsink.
Connection 8. Connection Make the connections as indicated in figure 2.0 & fig 3.0. Watch the polarity of the loudspeakers. If a ring-core transformer is used, it is possible that the OV (GND) connection consists of two leads. Finish all connections before switching on the power. Fig. 2.
Fig. 3.
PCB 9. PCB layout.
Diagram 10.
Modifications and typographical errors reserved © Velleman nv. H4003IP - 2004 - ED1 (rev.