Schematic of delay line
U3
U4
U2
U1
C1
Capacitance
1uF
C10
Capacitance
0.01uF
C9
Capacitance
0.01uF
C12
Capacitance
0.01uF
C6
Capacitance
100nF
C3
Capacitance
1uF
C5
Capacitance
1uF
C7
Capacitance
1uF
OUT
C4
Capacitance
100nF
C2
Capacitance
100nF
C11
Capacitance
0.01uF
IN
C8
Capacitance
100nF