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Now install the power connector. This is mounted on the same side of the PCB as the resistors etc.
Solder one pin. Check the header is sat squarely on the PCB before soldering the other pins. Clean
the flux residue from the PCB.

MTM SimpleEQ 0805 build doc v1.1

Page 28

Содержание SimpleEQ

Страница 1: ...Music Thing Modular SimpleEQ Build Doc 0805 version MTM SimpleEQ 0805 build doc v1 1 Page 1...

Страница 2: ...an adjacent dimple dot in the package or by a semi circular indentation at the end nearest pin 1 pin 8 as is common with through hole ICs SMD devices often have one of the longer sides with a sloped f...

Страница 3: ...g the ICs Flux pen This isn t essential for a kit like this with only 2 x 8 pin IC s but it does make soldering some components much easier Fine point tweezers These are essential for handling surface...

Страница 4: ...ard whilst semiconductors such as ICs transistors diodes etc will be in a anti ESD plastic Most tapes will have a layer of clear plastic film over one side To remove the device the easiest way is to c...

Страница 5: ...up Finish one component type value before proceeding to the next Don t rush Regularly inspect your work with the magnifying glass or loupe Clean your work as MTM SimpleEQ 0805 build doc v1 1 Page 5 Il...

Страница 6: ...esources online for tutorials on working with surface mount devices The techniques here suggested here are one way to solder surface mount devices As you become more familiar with working with this te...

Страница 7: ...ards As resistors are not polarised it doesn t matter which end of the resistor is soldered to which pad on the PCB Before we actually solder the first of the resistors lets take some time to actually...

Страница 8: ...n on one of the PCB pads for R1 immediately apply a small amount of solder to the pad Remove the iron tip You should have a small rounded blob of solder on the pad If you think you ve applied too much...

Страница 9: ...easier to move the resistor with just one pad soldered so now is the time to get it s positioning right Now solder the other pad Place the soldering iron tip on the R1 pad that you didn t solder rest...

Страница 10: ...solder Now install resistor R2 using the same procedure as you ve just done for R1 Blob of solder on one pad Install the resistor Solder the other pad Then repeat this for R3 R4 After which the board...

Страница 11: ...oks OK To clean the board use a soft haired brush soaked in a cleaner appropriate for your solder as you would do for through hole boards Gently brush the components to remove the flux You may need to...

Страница 12: ...ting upwards as you ll see they don t have a value printed on any face Start with the 5 x 100nF capacitors designated C1 C7 C8 C11 C12 Use exactly the same procedure to solder these capacitors as you...

Страница 13: ...C4 C6 Now install the 2 x 33nF capacitors C3 C5 Now install the 4 7nF capacitor C2 MTM SimpleEQ 0805 build doc v1 1 Page 13 Illustration 12 ceramic capacitor soldered on one side Illustration 13 ceram...

Страница 14: ...o be installed the right way up as one side has much larger pads than the other The side with the larger pads is the one that needs to be placed on the PCB Try to avoid overheating these devices as th...

Страница 15: ...MTM SimpleEQ 0805 build doc v1 1 Page 15 Illustration 16 PTC fuses F1 F2 installed on the PCB...

Страница 16: ...e of the tabs than the other The line may be faint so the use of a magnifying glass or loupe will help The end of the diode marked with this line is known as the cathode The PCB silk screen around the...

Страница 17: ...me to clean the board as before inspect your soldering on the diodes capacitors fuses MTM SimpleEQ 0805 build doc v1 1 Page 17 Illustration 18 Diodes D1 D2 installed with line identifying cathode towa...

Страница 18: ...le or crescent embossed into the casing to identify the location of pin 1 Instead they have a sloped face on the side with pin 1 The other side has a vertical face If you look at the silk screen for t...

Страница 19: ...d be orientated also how the device s pins should sit on the pads MTM SimpleEQ 0805 build doc v1 1 Page 19 Illustration 22 NE5532 op amp located on the pads at IC1 prior to soldering Illustration 21 s...

Страница 20: ...edge of the soldered pad so that the solder melts Quickly slide the IC into place trying to ensure that the IC s other legs are sat squarely on the other pads Remove the soldering iron as quickly as...

Страница 21: ...gs on the other side from the one you ve already soldered Put the tip of the soldering iron at the end of the pad apply a small amount of solder The solder should flow down the pad over the IC leg Rep...

Страница 22: ...ent solder on the pads the pins that you won t have to re apply any solder Repeat this process for IC2 Once both IC s are soldered thoroughly clean the PCB around both ICs especially if you ve used a...

Страница 23: ...ilk screen on the PCB so it s easy to get the orientation right Again remove one of the devices from the tape offer it up to the PCB Note how the pins sit on the pads You ll probably notice there isn...

Страница 24: ...Now if you re using a flux pen apply some flux to the PCB pads and also to the capacitor s pins The flux will help the solder flow into the joint between the pad the capacitors leg Position the capac...

Страница 25: ...e soldering iron to the other end of the pad Once the solder on the pad melts push the capacitor forward along the pad with the molten solder until it s pin comes into contact with the soldering iron...

Страница 26: ...the pin of the capacitor and the pad whilst at the same time applying solder A small amount of pressure on the iron may help Applying some more flux here before you solder will help the solder flow d...

Страница 27: ...the second electrolytic capacitor Thats the hard part over Take some time to clean the board again inspect the joints for the electrolytic capacitors with the magnifying glass loupe MTM SimpleEQ 0805...

Страница 28: ...This is mounted on the same side of the PCB as the resistors etc Solder one pin Check the header is sat squarely on the PCB before soldering the other pins Clean the flux residue from the PCB MTM Simp...

Страница 29: ...the nuts up finger tight The retaining clips on the pots should keep everything in place whilst you do this The panel should now be parallel to the PCB Turn the assembly over so the component side of...

Страница 30: ...he case now if the pots are still fully clipped into the PCB Solder the other pins of the jacks the 3 pins and 2 retaining clips of each of the pots And thats the soldering done All you need to do now...

Страница 31: ...33nf C3 C5 C0805 capacitor 81 GRM40X333J50D 5 X7R 5 100n C0805 capacitor 81 GRM40X104K50L 50V 10 X7R 2 47u C9 C10 667 EEE FK1V470P 35V 2 NE5532 IC1 IC2 SO08 op amp 595 NE5532D 2 1N5819 D1 D2 SOD123 D...

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