Ramsey Electronics PG13 Instrukcja Obsługi Pobierz pdf (Strona 8)

ECS1• 8

ECS1 PC BOARD ASSEMBLY STEPS

 1. Take a look at the layout diagram. Let’s start with the bottom left of the

board and install power switch S1. Be sure to use enough solder to firmly

attach it to the board.

 2. Next, install D2, 1N4148 diode, to the right at the bottom of the board.

Be sure it goes in the right way. Line up the black band on the part with

the white band on the board drawing.

 3. Install R2, 500K potentiometer [marked 504], to the right of D2.

 4. Install R3, 100K thermistor, next to R2. This is the temperature sensor

for your kit. At this point you can solder in the part directly to the board, or

solder it to the end of a wire, and then solder the wire into the board. Us-

ing the wire method, you can place the thermistor a distance away from

the board to measure temperature remotely. You can use the included

wire, or your own wire, if you want it to be longer. If you decide to solder

the thermistor onto the end of a wire, wrap some tape around the leads

just to keep them from bending and possibly breaking off.

 5. Install D1, 1N4148 diode, above D2. Watch the polarity again.

 6. Install R1, 10K ohm resistor [brown-black-orange], above R2.

 7. Install C1, 2.2 uF electrolytic capacitor, above D1. Watch the polarity on

this part too. Make sure the “-” lead goes in the “-” hole, and the “+” lead

goes in the plus hole. There is a band on your cap marking “-” and a “+”

symbol on the board.

 8. Install U1, the first of a trio of 555 timers. Make sure the notch on the

chip lines up with the notch on the board drawing.

 9. Install Q1, BS170 “power” transistor. Power is in quotes because of a

running argument between myself and another engineer here about MOS-

FETS. For a tad more $$, I could have put a part in this kit that could start

your car, but I SUPPOSE it isn’t necessary for driving a small speaker. I

digress. Make sure Q1 goes in the right way. Line up the flat spot with the

flat spot on the board drawing.

 10. Install R9, 1K ohm potentiometer [marked 102], to the right of Q1.

 11. Install C10, .01 uF ceramic disc capacitor [marked 103], above R9.

 12. Install C9, .01 uF ceramic disc capacitor [marked 103], above C10.

 13. Install C7, .01 uF ceramic disc capacitor [marked 103], above C10.

 14. Install C5, .1 uF ceramic disc capacitor [marked 104], above C9.

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Ramsey Electronics PG13 Instrukcja Obsługi Strona 8