QRPproject DL-QRP-AG, Руководство пользователя

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Version: 13. Sepe
,m
er 2004
10
Building description for the Speaky
Please follow the prescribed building order for all sections. Check each part
in the parts list with a pencil, to keep track. To the right of each part in
the lists, you will find its coordinates on the pc board. C3 means that the
component is at square C3. B/C3 means that the component is located at
the border between grid squares B3 and C3.
Start with the voltage regulators.
Section 1, Voltage regulators
In this first section, the necessary voltages are produced. The Speaky needs
+5V, +6V und +10V. In a later section theses voltages will be divided in two
groups, one for the receiver and one for the transmitter. But here we will
only make the raw voltages. The order of building is mainly decided by the
height of the components.
First the resistors.
We recommend measuring the resistors individually. The colour
coding is often misinterpreted because of the body colour of
the resistors. By experience we now wrong resistor values to be
a common source of errors.
As the Speaky is very small, yet not use SMD parts, most resistors are
mounted vertically. To do this one lead must be bent back parallel to the
resistor. In the placement diagram, the circle marks the position of the
resistor body.
[ ] R11 39R B6
[ ] R112 120R metal foil 1% E1
[ ] R113 820R metal foil 1% E1
Now the diodes. Please check the type with a loupe. D32 is a comparatively
large component, D1 and D2 looks alike, but have a printed marking. The
cathode is marked by a ring. When diodes are mounted
standing up, it is always the cathode lead, that is bent back
parallel to the body of the diode. The ring on the placement
diagram marks the place for the body.
[ ]
D1 1N4148 B6
[ ] D2 ZPD 2V7 (500mW) A6
[ ] D32 1N5822 o.Ä. F1
Please note the polarity of the electrolytic capacitors. The long lead is
always the positive lead. Further a minus on the body marks the nega-
tive lead.
[ ] C20 1µF/63V rad. A6
[ ] C21 1µF/63V rad. A6
[ ] C129 1µF/63V rad. B/C 1
[ ] C130 1µF/63V rad. C1
[ ] C131 10µF/35V rad. D/E 1
[ ] C132 10µF/35V rad. D/E 1
[ ] C133 470µF/25V rad. E/F 1
The following parts are the integrated voltage regulators
for 5 and 6 Volts in T092 casings. Voltage regulation with
these parts look eay but is quite complicated. They con-
tain several dozens of components. They output a con-
stant voltage, as long as the input is at least 1 Volt higher
than the output voltage. Please take care to mount the correct regulator in
the correct place!! Many small signal transistors and voltage regulators are
made in T092 caisngs. The placement diagram shows most parts from abo-
ve. Pleas take care to mount these TO92 parts with the round side oriented
correctly, as shown in the placement diagram. Mount them close to the pc
board, not more than 2-3 mm above the board. This is obtained with a
SLIGHT pressure, - no violence! Don‘t mix up the two regulators. The 8 Volts
regulator is marked LO8, the 6 Volt one is marked LO6.
[ ] IC5 78L05 TO92 A6
[ ] IC14 78L06 TO92 C1