Ramsey Electronics FM10A Bedienerhandbuch PDF herunterladen (Seite 15)

VLF1 • 15

 47. Install the 7805 voltage regulator, bending the pins back and letting it

lay flat on the board as shown in the picture.

 48. Install R10, 1K ohm resistor (brown-black-red).

 49. Install D2, the red LED, next to the 7805. Observe which way it goes

in. The flat side of the LED should match the flat side on the board outline.

Leave the leads on the LED long; aproximately 1/2 inch of lead length

from the top of the PC board will give you enough space to bend it over

and fit it through the case.

You have now finished soldering all the components! At this point you should

look over your work and make sure all the solder joints look good and there

aren’t any solder bridges or “splash-ohs” on the circuit board causing

undesirable connections. Also very important is that transformer T1 is

soldered in correctly. Look at the transformer outline drawing on the board. If

you have an ohmmeter, Check across the outermost wires (the transformer

primary) and ensure that you get a low resistance reading. Also check the

inner wires (the transformer secondary) and ensure that they are low

resistance as well.

If you don’t get a low resistance reading in these tests, the wires are not wired

to the correct holes. Fix them, and test again with your meter until they are

correct.

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Ramsey Electronics FM10A Bedienerhandbuch Seite 15