microBrute Modulator
May 2010, Rev 1
− 7 −
© 2010 Eastern Voltage Research, LLC
microBrute Modulator Instruction Manual
8. Install C2, 0.1uF capacitor (marking BC104)
9. Install C5, 0.1uF capacitor (marking BC104)
10. Install C3, 0.01uF capacitor (marking BC103)
11. Install C4, 0.01uF capacitor (marking BC103)
12. Install C6, 0.01uF capacitor (marking BC103)
13. Install C7, 0.015uF capacitor (marking BC153)
14. Add a jumper (short) from U3, Pin 1 to U3, Pin 4.
15. Install U1, 555 Timer. The 555 Timer IC may be soldered directly to the
PCB without worry, but you may use an 8-pin DIP socket (your own) if you
prefer. Use the same care in soldering such a socket and inserting the IC as you
would in direct soldering of the chip. Note that one end of the IC is marked by a
dot, notch, or band; this end MUST be oriented as shown on the PCB layout.
16. Install U2, 555 Timer. The 555 Timer IC may be soldered directly to the
PCB without worry, but you may use an 8-pin DIP socket (your own) if you
prefer. Use the same care in soldering such a socket and inserting the IC as you
would in direct soldering of the chip. Note that one end of the IC is marked by a
dot, notch, or band; this end MUST be oriented as shown on the PCB layout.
17. Solder approx. 3-4" of wire lead to each of the following locations on the
PCB board:
a.
J1+
b.
J1-
c.
+9V
d.
R3+
e.
R3-
f.
R5+
g.
R5-
18. Using a utility knife or scroll saw, cut out a rectangular hole as shown in the
figure below. EXTREMELY IMPORTANT - First line up the both the top and
bottom piece of the enclosure and fit together. You want to ensure to cut the right
end of the top piece of the enclosure as there are two stand-offs which will
interfere with the battery compartment if you cut the wrong end of the top piece
of the enclosure.
