PCB for 1590B enclosure

COMPONENT LIST

PCB                    PCB for 1590B enclosure
C1     100u         100UF 35V 105C RADIAL ELECTROLYTIC CAPACITOR 6X11MM
C2     100n         100NF 0.1UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
D1     Jumper      (Optional 1N4001 DIODE 1A 50V)
D2     1N4001     1N4001 DIODE 1A 50V
R1     2.2k          2.2K OHM 1/4W 1% METAL FILM RESISTOR
R2     47             47 OHM 1/4W 1% METAL FILM RESISTOR (Optional. If no need it, place jumper)
LED                    LED 3MM GREEN
DC                     DC POWER JACK 2.1MM BARREL-TYPE PCB MOUNT
JACK IN              6.35MM 1/4" STEREO INSULATED SWITCHED SOCKET JACK PCB
JACK OUT           6.35MM 1/4" STEREO INSULATED SWITCHED SOCKET JACK PCB
3PDT                  3PDT STOMP FOOT / PEDAL SWITCH
BATTERY             9V 9-VOLT BATTERY CLIP / CONNECTOR SNAP
CONNECTOR       XH 4-PIN MALE CONNECTOR
 

PCB FRONT AND BACK

SCHEMATIC

CIRCUIT DESCRIPTION

Diode LED

The resistor R1 is the current limiters for the diode LED. Choose the resistance value according to the brightness of the led. Recommended values are 2.2k – 4.7k for regular LEDs.

Power supply

Capacitors C1 and C2, in combination with R2, filter the noise from the power supply. To ommit this filter, don’t place C1 and C2, and substitute R2 by a jumper.

Diodes D1 and D2 are placed for reverse polarity protection. If the effect PCB already has inverse polarity protection, don’t place D2, and substitute D1 by a jumper.

D1 and R2 will drop the voltage at the effect PCB. To keep the voltage of the original power supply, substitute D1 and R2 by jumpers.

GENERAL DESCRIPTION OF COMPONENTS

Resistors

The resistors should be ¼ Watt metal type. You can either use a multimeter or the color bands to obtain their values. Resistors do not have polarity, you can place them in any direction.

Electrolytic capacitors

Electrolytic capacitors have their value printed on them. The negative polarity pin is indicated by a white strip along the can. They also have a longer leg indicating the positive pin. The maximum voltage rating never can be exceeded, make sure you are using at least double voltage rating than your power supply. For example, if you are using a 9V power supply, use a electrolytic capacitor with at least 18V maximum voltage rating.

Polyester capacitors

The polyester capacitors have their value marked with three numbers. Read as picofarads (pF), the first two are the 1st and 2nd digits and the third is the multiplier code. These capacitors do not have polarity, you can place them in any direction.

Diodes

Diodes have their model printed on them. The polarity (cathode) is indicated by the ring near the side. This ring is also marked on the PCB.

Led diodes

Led diodes have polarity, the cathode is indicated as a flat surface on the side of the diode and also it is the shorter led. On the PCB, the cathode is marked as a flat side and anode as a round side.