PASCO EM-8656 AC_DC ELECTRONICS LABORATORY - Manual (Page 108)

104
AC/DC Electronics Laboratory 012-05892A
®
➀
Insert the 2N3904 transistor into the socket on the AC/DC Electronics Lab Board. The transistor
has a half-cylinder shape with one flat side. The socket has three holes labeled “E” (emitter), “B”
(base) and “C” (collector). When held so the flat side of the transistor faces you and the wire leads
point down, the left lead is the emitter, the middle lead is the base, and the right lead is the collector.
C = Collector
B = Base
E = Emitter
Socket
2N3904 transistor
Top view of transistor socket
➁
Connect one five inch wire lead from the component spring at the base terminal of the transistor to
the component spring below the base terminal of the transistor.
➂
Connect one 1 k
Ω
resistor from the component spring at the bottom end of the wire lead coming
from the base terminal of the transistor, to the component spring directly below (at the bottom
edge of the AC/DC lab board).
➃
Connect the wire at the negative end of the 1
µ
F capacitor to the same component spring at the
bottom edge of the AC/DC lab board. Do not connect the other wire lead of the capacitor to
anything.
➤ NOTE: The negative end of the 1 µ
F capacitor has a small round bump.
1
µ
F
3 VOLTS MAX
C
W
EM-8656 AC/DC ELECTRONICS LABORATORY
C
B
E
Transistor 2N3904
1 k
Ω
10
µ
F
22 k
Ω
to
Power Supply
Ground
+5V
to
Channel A
1
µ
F
1 k
Ω
22 k
Ω
10 k
Ω
to
Power Amp
1 k
Ω
1 k
Ω
➤ CAUTION: Connecting the
transistor incorrectly can destroy
the transistor.