Vectronics VEC-254 User Manual
Page 3
VEC-254 Owner's Manual
Classroom Code Practice Oscillator
3
P/N DESCRIPTION
REFERENCE
100S-2100
100
Ω
RESISTOR
R17
100S-3100
1K
Ω
RESISTOR
R4,R11,R14
100S-3390
3.9K
Ω
RESISTOR
R7
100S-3470
4.7K
Ω
RESISTOR
R2,R13
100S-4100
10K
Ω
RESISTOR
R1,R6,R8,R12,R16
100S-4270
27K
Ω
RESISTOR
R5
100S-4470
47K
Ω
RESISTOR
R9,R10
100S-5150
150K
Ω
RESISTOR
R3
100S-5330
330K
Ω
RESISTOR
R15
130-5100
100K
Ω
TRIMPOT
R20
155-3100-1
1K
Ω
POT
R22
155-4100-1
10K
Ω
POT
R21
200S-1110
.01
µ
F CAPACITOR
C6
200S-1122
.022
µ
F CAPACITOR
C2,C3
200S-1210
.1
µ
F CAPACITOR
C4,C5
203-1470
470
µ
F, ELECTROLYTIC CAPACITOR C7,C8
203S-3110
1
µ
F CAPACITOR ELECT
C1
300S-0914
1N4148 SWITCHING DIODE
D1,D2,D3,D4
305-7002-SM 2N7002
TRANSISTOR
Q1
307-1020
+8V VOLTAGE REGULAR
U2
311-0040-SM LM324 OP AMP
U1
311-27052
TDA7052AN AUDIO AMP
U3
320-1002
3mm RED LED
CR1
410-0169
3" 8
Ω
SPEAKER
SPK1
504-0022
2P2T PUSH BUTTON SWITCH
SW1
601-0012
1/4" PHONE JACK
J3
601-5005
3.5mm CLOSED STEREO JACK
J2
601-6021
2.1mm COAXIAL, POWER JACK
J1