Ramsey Electronics BS1 Manual de instrucciones descargar pdf (Pagina 17)

SG7• 17

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If U2 is marked "CD4093", then C20 is 22µF electrolytic capacitor.

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If U2 is marked "MC14093", the C20 is 33µF electrolytic capacitor.

 37b. Install the correct value for C20 per 37a, observe correct polarity.

PROGRESS SUMMARY:

By now, you have installed the majority of the individual components for the

LED Speed Readout Unit. As you can see on the PC board drawings,

installation of a large number of jumper wires is required, and their correct

connections are seen most clearly in relation to the ICs. Jumpers act as

miniature "electronic bridges" that carry signals over PC board traces. You can

make a jumper from a scrap, clipped off component lead wire shaped into a

small loop.

JUMPER WIRES: Mark off each one as installed, while proceeding with the

remaining assembly steps:

 Jumper Wire No. 1

 Jumper Wire No. 10

 Jumper Wire No. 2

 Jumper Wire No. 11

 Jumper Wire No. 3

 Jumper Wire No. 12

 Jumper Wire No. 4

 Jumper Wire No. 13

 Jumper Wire No. 5

 Jumper Wire No. 14

 Jumper Wire No. 6

 Jumper Wire No. 15

 Jumper Wire No. 7

 Jumper Wire No. 16

 Jumper Wire No. 8

 Jumper Wire No. 17

 Jumper Wire No. 9

ALL JUMPER WIRES INSTALLED!!

 38. Install C14, 10µF electrolytic capacitor, observe polarity.

 39. Install R23, 220 ohm resistor [red-red-brown].

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Ramsey Electronics BS1 Manual de instrucciones Pagina 17