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Schematic of Noisy Cricket Amp
U1_OUT
U1_OUT
+9V
Note 3
Line 1
Tone
Line 2
B100K
J1
+9V
R2
Resistance
22kΩ
VR3
SW1
U3
Note 8
Line 1
This goes to a SPST latching/toggle power switch.
Line 2
Either pad can connect to either lug of the switch.
+9V
Note 1
Line 1
This represents the 9V power supply.
Line 2
P1: 9V
Line 3
P2: GND
D1
Note 2
Line 1
Volume
Line 2
B10K
SW2
Note 6
Line 1
Gain
Line 2
B1K
Note 10
Line 1
This goes to a SPST latching/toggle "grit" switch.
Line 2
Either pad can connect to either lug of the switch.
Line 3
If "grit" switch is not necessary, leave SW2 and C4 unpopulated
VR1
Note 7
Line 1
Decrease R3 to brighten LED, increase R3 to dim LED
Line 2
R3 should not be below 4.7kΩ
Line 3
Line 3
VR2
C3
Capacitance
100nF
M1
C4
Capacitance
100nF
U2
M2
C1
Capacitance
220uF
C5
Capacitance
100nF
M3
C2
Capacitance
10uF
M4
C6
Capacitance
47nF

Noisy Cricket Amp