Ramsey Electronics PG13 Manual de instrucciones descargar pdf (Pagina 9)

RV-1 • 9

CONSTRUCTION OF THE RV1 REVERB EFFECTS KIT:

The first thing we will do with this kit is check all of our parts and pieces to

make sure we have them all. Use the parts list to do this. If there are any

differences, make sure the schematic agrees with what you have, and also

be aware of the tolerances parts have in a kit. Non-critical parts can vary

quite a bit with almost no effect on kit operation. For example you may get

1uF capacitors in place of 10uF capacitors, or a 100K pot in place of a 10K

pot. No harm done as these will make no difference in kit operation. Use the

parts layout diagram on page 20 to locate parts.

[ ] 1. Install J1, the left input jack, solder all the pins securely to the PC

board for mechanical strength.

[ ] 2. Install J2, J3, and J4 also. We will install them all at once since we will

be using them as "landmark" components to reference the other parts

to.

[ ] 3. Install C2, a 10uF electrolytic capacitor. Electrolytic capacitors are

polarized and must be installed correctly. They are usually marked with a

black stripe and a ( - ) indicating their negative lead, while PC boards will

usually indicate the ( + ) hole.

[ ] 4. Install R4, a 4.7K (yellow-violet-red) resistor. Be careful not to install it

where JMP2 goes as this can be confusing. This resistor is one of two

that sends the original audio from the input to the output.

[ ] 5. Install R19, a 100K (brown-black-yellow) resistor.

[ ] 6. Install C4, a 10uF electrolytic capacitor. Again note its orientation on

the parts layout diagram.

[ ] 7. Install JMP12 with a piece of scrap component lead. This jumper, acts

as a "bridge" for other connections to pass under.

[ ] 8. Install R18, a 100K (brown-black-yellow) resistor.

[ ] 9. Install R23, a 470K resistor (yellow-violet-yellow). This resistor

combined with U1:B provides for a microphone preamp with a gain of

approximately 470 times. This gets the audio level of a mike up to line

level that the circuit requires.

[ ] 10. Install R24 a 1K resistor (brown-black-red), the other resistor involved

with the microphone preamp.

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Ramsey Electronics PG13 Manual de instrucciones Pagina 9