Ramsey Electronics FM10A Manual de Instruções descarregar pdf (Página 13)

VLF1 • 13

 19. Lastly, solder in your transformer, aligning the primary and secondary

leads as they appear in the board outline. You have to tin the leads with

your soldering iron before you insert them. Get a little solder on your iron

and “paint” it on the leads as you heat them. The insulation will melt off

and the solder should stick. You will be able to see that the leads are

shiny and the red insulation is melted off. Now solder a wire or long piece

of component lead over the top of the core and into the two holes on

either side of the board.

Now take a break! That was the hardest part of this kit. After you solder in the

rest of the parts, you will be good to go.

 20. Install R2, 10K ohm resistor (brown-black-orange) next to C4.

 21. Install JMP3, a little piece of cutoff component lead bent into a staple

shaped piece.

 22. Install C6, .1uF capacitor (marked 104).

 23. Install C5, 10uF electrolytic capacitor next to C6. Be sure to observer

polarity. The “+” mark on the board outline has to line up with the “+” side

of the cap. Caps are usually marked with a “-” band. The plus side is the

other one, also normally the longer lead.

 24. Install R1 and R3, 10K ohm resistors (brown-black-orange) next to

C5.

 25. Install C11, .1uF ceramic disk capacitor. This feeds the mixed signal

to the 2N3904 which amplifies it.

 26. Install JMP1, a little piece of cutoff component lead next to C11.

 27. Install R6, 1K ohm resistor (brown-black-red) next to C11.

 28. Install R5, 270 ohm resistor (red-violet-brown).

 29. Install C7, .1uF ceramic disk capacitor (marked 104) next to R5.

 30. Install C13 1uF electrolytic capacitor next R6. Be sure to observe

polarity.

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Ramsey Electronics FM10A Manual de Instruções Página 13