Velleman projects K7102 Assembly instructions - Manual (Page 5)

5
Construction
 D1 : 1N4148
2. Diode. Watch the polarity !
D...
CATHODE
ZD1 : 3V9
3. Zenerdiode. Watch the
polarity !
CATHODE
ZD...
The coil consists of two windings around the ferrite core supplied.
In order to facilitate winding, thin double sided sticky tape can be stuck
to the ferrite core, each winding can be held down using ordinary sello-
tape.
Both windings must be wound in the same direction (see fig 1.0)
 Winding L1 = 120 turns
(this winding can be marked with a sticky label)
 Winding L2 = 43 turns.
1. Coils
L1
L2
Ø8mm
Cu 0.3mm
43T
120T
d
c
b
a
Fig. 1.0
MAKE SURE TO
SCRAPE OFF THE
LACQUER!