R4
Resistance
10 kΩ
U2
R7
Resistance
10 kΩ
D2
R5
Resistance
10 kΩ
C3
Capacitance
220uF
R2
Resistance
10 kΩ
D1
R1
Resistance
100 kΩ
R6
Resistance
10 kΩ
R3
Resistance
500 Ω
U1
C2
Capacitance
66 nF
C1
Capacitance
66 nF
VR1
Q1