Velleman K8042, Illustrated Assembly Manual, Page: 6 / 12

6
Construction

VR1 : LM317

VR2 : LM337
9. Voltage regulators
VR...

When you want to use the maximal 20W dissipation
mount the optional heat sink, ordernr. : HS4003.

Apply a little heat conducting paste (obtain from your
specialized dealer) to one side of an insulation plate and
press it with this side against the heatsink, there were the
component has to be fitted.

Then apply a little heat conducting paste to the component
itself, fit the component onto the heatsink and fix it by means
of an insulation tube, an 15mm M3 bolt and a nut.
10. Heatsink
15mm M3 bolt
insulation plate
M3 nut
insulation tube
1
heat conducting paste