Sync
Source
R
Scope
. . . . .
<~------.f\!VVV\------~----X
Sync
D
I
Hub
I
For Negative
Supply Voltage
Scope
Sync
Hub
R
Sync
xh--------~I------------~----------~~~
Source
R
May be 10K to 50K
yD
For Positive
Supply Voltage
D
May be any diode or small selenium rectifier
that has a voltage rating greater than the
supply voltage.
3.27