Page 10 of 36
Install the Transistors
Orient the transistor so its body shape matches the silk-screen outline. Leave the top of
the transistor about ½” off the board! The lead length reduces stress on the body and
keeps the transistor safe from too much heat during the soldering operation.
Designation Type
Description
Done? (
)
Q1
2N3904, TO-92
40 V NPN bipolar transistor
Q2
2N3904, TO-92
40 V NPN bipolar transistor
Q3
2N3904, TO-92
40 V NPN bipolar transistor
Q4
ZVN2110A, TO-92
100V N-channel MOSFET
Install the Small Non-polar Capacitors
Orientation of these caps does not matter.
Designation Description
Done? (
)
C3
0.01 uF, 400 Volt film capacitor, box capacitor
Install the Electrolytic (polarized) Capacitors
Polarized Capacitors (
watch polarity and voltage rating
). The negative side of the
capacitor is marked with a minus (-) sign. That side of the capacitor installs
away
from
the + sign on the silk screen.
Designation Value
Rating, Marking
Done? (
)
C1
22 uF
Electrolytic capacitor, 22 uF 50 V, radial leads
C2
1 uF
Electrolytic capacitor, 1 uF 100 V, radial leads
Fasten the Mounting Brackets to the PCB
Using Figure 5 as a guide, fasten the mounting brackets to the PCB using 2 6-32x1/4”
sems screws (they have a built-in lockwasher) into the threaded hole of the mounting
bracket.
Figure 5-Installing the mounting brackets on the power supply PCB
Install the C9 Connection wires
1.
Cut a 5” length of the supplied 18 AWG red/black zip cord.
2.
Strip ¼” inch of insulation from each of the four ends.
