Charge Pump

This DC pump provides -9V and +18V from a +9V voltage source.
Steps
  1. Overview
  2. Designators and components
  3. PCB assembly
  4. Enclosure and wiring
Categories
DIY Projects, DIY Guitar Effects
Created by DHEA
Status: Active
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Designators and components Step 2 of 4

PCB

    

 

SCHEMATIC

COMPONENTS FOR -9V OUTPUT    

PCB                  DC PUMP PCB
C1   100u         100UF 35V 105C RADIAL ELECTROLYTIC CAPACITOR 6X11MM
C3   10u           10UF 50V 105C ALUMINUM ELECTROLYTIC CAPACITOR 5X11MM PANASONIC
C6   10u           10UF 50V 105C ALUMINUM ELECTROLYTIC CAPACITOR 5X11MM PANASONIC
D1    1N4001    1N4001 DIODE 1A 50V
D4    1N4148    1N4148 SWITCHING SIGNAL DIODE
U1    TC1044    TC1044SCPA TC1044 VOLTAGE REGULATOR IC

COMPONENTS FOR +18V OUTPUT    

PCB                 DC PUMP PCB
C1   100u         100UF 35V 105C RADIAL ELECTROLYTIC CAPACITOR 6X11MM
C3   10u           10UF 50V 105C ALUMINUM ELECTROLYTIC CAPACITOR 5X11MM PANASONIC
C4   10u           10UF 50V 105C ALUMINUM ELECTROLYTIC CAPACITOR 5X11MM PANASONIC
C5   10u           10UF 50V 105C ALUMINUM ELECTROLYTIC CAPACITOR 5X11MM PANASONIC
D1    1N4001    1N4001 DIODE 1A 50V
D2    1N4148    1N4148 SWITCHING SIGNAL DIODE
D3    1N4148    1N4148 SWITCHING SIGNAL DIODE
U1    TC1044    TC1044SCPA TC1044 VOLTAGE REGULATOR IC

OUTPUT CURRENT

The output current of the TC1044SCPA is limited to 20mA. Make sure the total current consuption of the circuit or the pedal chain is bellow the limit. To measure the current, connect a multimeter in series between the power supply (battery, wall charger...) and the pedal/PCBA.

 

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