Celsius Preamp

Based on the Boss CE-1· 3 other boards clone it

From the vendor

Controls

• Volume

• High/Low (Toggle switch)

Details

• Designed for a 125B enclosure with top-mounted jacks

The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Ref	Value	Normalized	Type	Notes
Resistors 15
R1	4K7	4.7k	Resistor, 1/4W
R2	1K5	1.5k	Resistor, 1/4W
R3	56K	56k	Resistor, 1/4W
R4	330K	330k	Resistor, 1/4W
R5	10K	10k	Resistor, 1/4W
R6	10K	10k	Resistor, 1/4W
R7	680R	680	Resistor, 1/4W
R8	10K	10k	Resistor, 1/4W
R9	100K	100k	Resistor, 1/4W
R10	470K	470k	Resistor, 1/4W
R11	12K	12k	Resistor, 1/4W
R12	1K5	1.5k	Resistor, 1/4W
R13	3K3	3.3k	Resistor, 1/4W
R14	4K7	4.7k	Resistor, 1/4W
R100	4K7	4.7k	Resistor, 1/4W	* LED current limiting resistor
Capacitors 9
C1	1u	1u	Electrolytic capacitor, 5mm
C2	1n	1n	Film capacitor, 7.2 x 2.5mm
C3	100p	100p	Ceramic capacitor
C4	1u	1u	Electrolytic capacitor, 5mm
C5	470n	470n	Film capacitor, 7.2 x 5.0mm
C6	470n	470n	Film capacitor, 7.2 x 5.0mm
C100	47u	47u	Electrolytic capacitor, 6.3mm
C101	10u	10u	Electrolytic capacitor, 6.3mm
C102	47u	47u	Electrolytic capacitor, 6.3mm
Diodes 1
D100	1N5817	1N5817	Schottky diode, DO-41
Transistors 1
Q1	2N2222A	2N2222A	BJT transistor, NPN TO-18
ICs 2
IC1	TL071	TL071	Single op-amp, DIP8
IC100	TC1044SCPA	TC1044SCPA	Charge pump IC, DIP8
Potentiometers 1
LEVEL	A50K	A50k	16mm right-angle PCB mount pot
Switches 1
HIGH/LOW	DPDT	DPDT	Toggle switch, DPDT	2-position (ON/ON)