Ramsey Electronics BS1 Bedienerhandbuch PDF herunterladen (Seite 22)

SG7• 22

 1a. Disc capacitors C1 and C2, .01µF (marked .01 or 103 or 10nF) are

installed as a single operation. Notice that each has one lead going through

the board and another to be soldered to a trace on the top. Also notice that

the ground pin of the signal jack will be soldered to AA. Therefore the wire

leads of C1 and C2 provide the ONLY connection between AA and the

main ground plane and must be soldered on BOTH sides of the board.

 1b. C1 and C2 are prepared as follows: Leave one lead wire straight, and

bend the other lead to a right angle from its body. Do the same for the other

capacitor. Select one capacitor and insert the straight lead through its hole

on AA then trim the bent lead so that it sits in perfect position. Make sure

just enough of the straight lead is exposed to permit a solid solder

connection to AA. Solder all points in whichever order seems easiest.

 1c. Install the other .01µF disc capacitor as explained above.

 2a. Notice that C3, the 220µF electrolytic capacitor, also has one wire

above (+) and the other (-) below. This capacitor and the other two

electrolytic capacitors are installed so that their sides lay flat on the board.

In addition, notice that holes are provided for each capacitor position so

that you can solder hold-down wires for mechanical stability. Whether you

install the hold down wires first, or solder the capacitor connections is up to

you. Do whatever is easiest, making sure you watch out for polarity and

that exposed wires are no longer than needed. If you prefer, these

capacitors may also be held in place with a small drop of adhesive, such as

silicone cement. It is important that they not vibrate during operation.

 2b. Install C3, 220µF electrolytic capacitor, per 2a above.

 3. Install C4, 1µF electrolytic in the same manner as above. This is the first

component for which both connections are made on the top side of the

board.

 4. Install C5, 1µF electrolytic the same way.

 5. Install R1, 10K ohms [brown-black-orange]. Remember that small parts

are easier to surface-solder if the connections are pre-tinned and the wire

leads are pre-formed and trimmed.

 6. Install C6, .01µF Disc capacitor (marked .01 or 103 or 10nF).

 7. Install R2, 1 megohm [brown-black-green].

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Ramsey Electronics BS1 Bedienerhandbuch Seite 22