Noise generator


PCB reference RU80068.8

Estimated building time: 2,5 hours


To complete this step the PCB with reference RU80068.8 is required:

Elektor Vocoder

Sort all required components as indicated in the BOM.

Bend the diodes so that they fit neatly right away, you need 31 of them:

Solder the diodes on the right position. Note the direction of the black line (component) and tabbed indication (silkscreen). Do not reverse the polarity of these components:

Bend aso the resistors so that they fit neatly right away and solder them according to the BOM on the right position:

Add the IC sockets by soldering only 1 pin. Check both direction and alignment of the IC sockets before soldering the remaining pins:

Solder now the remaining pins:

Also plug the corresponding IC's into the IC sockets, double check the direction of the notch to avoid destroyed IC's afterwards:

Put the 21 pin connector to the board, do not exert any excessive force. Solder only pin 1 and pin 21 and check for a right angle. Correct if necessary and solder all remaining pins:

Insert the transistor and solder only 1 of the legs, this allows lining up the components. Watch the direction of the transistor, correct if necessary and solder the remaining legs.

Thereafter add the trimpot:

Insert the electrolytic capacitors (e-caps), check the values according to the BOM. Solder only 1 of both legs, this allows lining up the components. Watch the polarity, correct if necessary and solder all remaining legs:

Add the film capacitors as specified in the BOM. Solder only 1 of both legs, this allows lining up the components. Crrect if necessary and solder all remaining legs:

Depending on the choosen capacitors, bend the legs as illustrated to adapt the lead spacing:

Finally use a pliers to press all solder pins into the PCB. The solder pins should have a diameter of 1 mm, the holes in the PCB have the same size. So firmly press the pins into the right position:

Thoroughly clean the PCB using flux cleaner and check for bad soldering or tin bulbs:

Well done

Congratulations, you have finished the noise generator, click here to navigate back to the building guide.

Disclaimer

The contents of this document are provided as-is. The published information could contain technical inaccuracies, typographical errors and out-of-date information. This document may be updated or changed without notice at any time. Use of the information is therefore at your own risk without any liability for special, indirect, incidental or consequential damages resulting from or related to the use of this document.