Би сакал да го направам овој 1,5W предавател, па да ве прашам дали некој од вас го има направено по следнава шема и дали и како работи?
Делови
Resistors
(values in Ohms unless otherwise noted)
R1 = 470
R2 = 15k
R3 = 680
R4 = 1k
R5 = 22k
R6 = 22k
R7 = 22k
R8 = 56
R9 = 220
R10 = 3k3
R11 = 1k
R12 = 220
R13 = 47
R14 = 220
R15 = 470
R16 = 150
R17 = 150
R18 = 68 or a VK200 choke in combination with C43
R19 = 270
R20 = 47 (for a 2N4427) else a VK200 choke
R21 = 100
R22 = 10k
R23 = 10k
R24 = 390
R25 = 390
R26 = 22k
R27 = 10k
R28 = 10k
R29 = 10k
R30 = 10
R31 = 10
P1 = 500, adjustable, Piher 10 mm Ш, horizontal
P2 = 1k, adjustable, Piher 10 mm Ш, horizontal
Capacitors
C1 = 100µF/25v
C2 = 47µF/25v
C3 = 100pF (np0)
C4 = 10nF
C5 = 1nF
C6 = 10nF
C7 = 1nF
C8 = 470µF/25v
C9 = 1nF
C10 = 1nF
C11 = 1nF
C12 = 10uF/25v
C13 = 60pF trimmer, yellow
C14 = 60pF trimmer, yellow
C15 = 1nF
C16 = 60pF trimmer, yellow
C17 = 60pF trimmer, yellow
C18 = 56pF
C19 = 56pF
C20 = 56pF
C21 = 27pF
C22 = 10nF
C23 = 10pF(*) optional
C24 = 100nF/63v (MKT)
C25 = 22uF/25v
C26 = 100nF
C27 = 22pF trimmer, green
C28 = not used
C29 = 100nF
C30 = 1nF
C31 = 100nF
C32 = 100nF
C33 = 10nF
C34 = 22pF (np0)
C35 = 22pF (np0)
C36 = 1nF
C37 = 10µF/25v
C38 = 1nF
C39 = 10µF/25v
C40 = 10µF/25v
C41 = 100nF
C42 = 100nF
C43 = 39pF
Cx = 3n9 (50µS) or 4n7 (75µS)
Note: mount a 10pF (1206 SMD capacitor) between the base and collector of T7
Semiconductors
D1 = BB809, Philips, Yellow band
D2 = 1N4148
D3 = LED, Green, 3 mm
D4 = LED, Red, 3 mm
T1 = BF981
T2 = BFR91
T3 = BFR96(S)
T4 = 2N4427 or 2N3553 (with heatsink)
T5 = BC557B
T6 = BD139
IC1 = 78L05
IC2 = 78L09
IC3 = 78L05
U1 = TSA5511 (Philips)
U2 = PIC 16F84(A)
Coils
L1 = 4.5 turn, 6 mm diameter, 1 mm CuAg, tap ѕ to 1 turn from ground (spaced)
L2 = 3 turn, 6 mm diameter, 1 mm CuL (closewound)
L3 = 5 turn, 6 mm diameter, 1 mm CuL (closewound)
L4 = 3.5 turn, 6 mm diameter, 1 mm CuL (closewound)
L5 = 3.5 turn, 6 mm diameter, 1 mm CuL (closewound)
L6 = 3.5 turn, 6 mm diameter, 1 mm CuL (closewound)
L7 = 3.5 turn, 6 mm diameter, 1 mm CuL (closewound)
L8 = 10µH, moulded choke
L9 = 10µH, moulded choke
L10 = 10µH, moulded choke
L11 = VK200 choke
Misc.
X1 = 3.2 MHz crystal
X2 = 4 MHz crystal
J1 = 14 pin boxed header, pcb mount, (90°)
S1 = push button
S2 = push button
S3 = push button
JP1 = 2 pins header + jumper
Notes
(*) not used
CuAg = silver plated copper wire
CuL = magnetwire, enameled copper wire
(Note: 1 mm CuL approx. equals to AWG18
0,3 mm approx. equals to AWG28)
D3 indicates if the PLL is locked
D4 indicates if the PLL is not locked
