Ramsey Electronics BS1 Manual de Instruções descarregar pdf (Página 15)

SG7• 15

 Step 1: Install U1, 14-pin IC, type LM324.

 Step 2: Install U2, 14-pin IC, type MC14093 (or CD4093).

 Step 3: Install U3, 14-pin IC, type 4011.

 Step 4: Install U4, 16-pin IC, type 4518.

 Step 5: Install U5, 16-pin IC, type 4511.

 Step 6: Install U6, 16-pin IC, type 4511.

IN THE FOLLOWING STEPS, BE SURE THAT THE ORIENTATION DOTS ON

THE LED DISPLAYS ARE POSITIONED AS SHOWN ON THE PC BOARD

DRAWING!!!

 Step 7: Install U7, 7-segment LED display.

 Step 8: Install U8, 7-segment LED display.

The installation of U5 through U8 clarifies the locations of 15 of the 17 bare

jumper wires to be installed. Be sure to save all the excess wire trimmed from

resistors and capacitors. The jumpers will be installed toward the end of the

assembly process when it is most likely you will have plenty of wire.

 4. Install R1, 47K ohm resistor [yellow-violet-orange].

 5. Install R2, 47K ohm resistor [yellow-violet-orange].

 6a. When installing C2, 100 to 220µF, remember that ALL of the electrolytic

capacitors are to be installed on their sides as shown on the PC board

drawing. Keep the exposed wires as short as possible and observe correct

polarity.

 6b. Install C2, 100 to 220µF electrolytic capacitor, observe correct polarity.

 7. Install C1, .005 or .0047µF disc capacitor (marked .005, .0047, 502 or

472).

 8. Install R3, 47K ohm resistor [yellow-violet-orange].

 9. Install R4, 47K ohm resistor [yellow-violet-orange].

 10. Install C3, .001µF disc capacitor (marked .001 or 102).

 11. Install C5, 2200pF disc capacitor (marked .0022, 2200 or 222).

 12. Install C7, .05 or .047µF disc capacitor (marked .05, .047, 503 or 473).

 13. Install C8, .05 or .047µF disc capacitor (marked .05 or .047 or 503 or

473). If C7 and C8 are large size (greater than the size of a "dime") disc

capacitors, they should be mounted on the solder side of the PC board to

ensure a good fit of the case.

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Ramsey Electronics BS1 Manual de Instruções Página 15