PCB for 1590B enclosureThis board will definitely save your time and help you to build your DIY guitar pedal in the 1590B enclosure. Led, jacks and footswitch are mounted on the PCB, being only necessary to wire the battery and the effect PCB.
Designators and components Step 2 of 5
C1 100u 100UF 35V 105C RADIAL ELECTROLYTIC CAPACITOR 6X11MM
C2 100n 100NF 0.1UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
D1 1N4001 1N4001 DIODE 1A 50V
D2 1N4001 1N4001 DIODE 1A 50V
R1 2.2k 2.2K OHM 1/4W 1% METAL FILM RESISTOR
R2 47 Ohm 47 OHM 1/4W 1% METAL FILM RESISTOR
LED LED 3MM GREEN with 3MM BEZEL LED HOLDER CHROME METAL
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
PCB FRONT AND BACK
SCHEMATIC OF THE PCB
BRIEF DESCRIPTION OF THE CIRCUIT
The resistor R1 is the current limiter for the diode led. You can choose the value according to the brightness of the led. Recommended values are 2.2k – 4.7k for regular leds.
Capacitors C1 and C2, in combination with R2, filter the noise from the power supply noise.
Diodes D1 and D2 are placed for reverse polarity protection.
If the effect circuit already has inverse polarity protection or power supply filtering, you can omit components D1, D2, C1, C2 and R2. If D1 or R2 are omitted, you need to place a jumper.
GENERAL DESCRIPTION OF COMPONENTS
The resistors are ¼ Watt metal type. You can either use a multimeter or the color bands to obtain their values. Resistors don’t have polarity; you can assemble them in any direction.
Electrolytic capacitors have the value printed on them. The polarity is also is marked for the negative lead, additionally the longer leg is the positive and shorter the negative. Assemble the electrolytic capacitor according to the positive polarity (+) marked in the PCB, that is, the longer leg of the capacitor is passed through the pad marked with +.
The polyester capacitors have three numbers, read as picofarads (pF), the first two are the 1st and 2nd digits and the third is the multiplier code. This type of capacitors doesn’t have polarity; you can assemble them in any direction.
Diodes have their type number marked on them. This two terminals component has polarity; a ring near the side indicates the cathode. This ring is marked as a line to indicate the correct polarity in the PCB.
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.