KATAΣΚΕΥΗ of the FM Oscillator with the BF900

AKOΛΟΥΘΟΥΝ ΣΧΗΜΑΤΙΚΟ ΚΑΙ ΠΛΑΚΕΤΕΣ ΚΑΤΑΣΚΕΥΗΣ

ΟΛΑ ΤΑ ΥΛΙΚΑ ΠΙΟ ΚΑΤΩ

Component list of the FM Oscillator with the BF900

Resistors:

(All resistors are metalfilm types except R1 which is a carbon resistor)

R1 : 47k, 1/8 W
R2 : 47k, 1/8 W
R3 : 47k, 1/8 W
R4 : 100E, 1/8 W
R5 : 220k, 1/8 W
R6 : 100k, 1/8 W
R7 : 150E, 1/8 W
R8 : 10k, lin. pot

Capacitors:

C1 : 100 nF Multilayer or ceramic
C2 : 4.7 pF ceramic
C3 : 100 nF ceramic (1 or 10 nF will do also)
C4 : 40 pf trimmer
C5 : 4.7 pF ceramic
C6 : 10 pF ceramic
C7 : 22 pF ceramic
C8 :   1 nF ceramic
C9 :   1 nF ceramic
C10: 100 nF ceramic
C11: 100 nF ceramic
C12: 100 nF ceramic
C13: 47 uF/25V
C14:   1 nF ceramic

Inductors:

L1 : 4 wdg, dia 8 mm, 1 mm CuAg, space 1 mm;
     Mounted 8 mm above PCB (Leads are 4 mm)
L2 : 6-hole ferroxcube wideband HF-choke (5 wdg)
L3 : 6-hole ferroxcube wideband HF-choke (5 wdg)

Others:

Q1 : BF900
D1 : BB405,BB102 or equal (most varicaps with C = 2-20 pF (approx) will do)
U1 : uA78L08, uA7809, uA7810 or equal (MC78LXX, UC78LXX etc)