OmniRat v1.0
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7
Rled
can be somewhere between 1k5 and 10k (try 4k7). The lower the value the brighter the LED
shines, but at the cost of power consumption and wear of the LED.
The diagram is also based on star wiring where all ground connections go to the sleeve of the input
jack. It requires very good conductivity between the input jack, output jack and the enclosure to
work correct. If you do not have good conductivity, please connect a wire between the input jack
sleeve and the output jack sleeve.
Modifications
OpAmp
It all started with the LM308N Opamp. Through the years as these got obsolete it changed to the
OP07. Nowadays the LM308N can still be bought, but be aware of fakes!
Other alternatives are the CA3130 and TL070.
Actually you can use almost any single pin compatible OpAmp, but be aware that it is externally
compensated via pin 1 and 8.
Ring
Sleeve
Tip
C
at
hod
e
(s
hor
t
le
g)
Input
Ano
de
(l
on
g
le
g)
Tip
Sleeve
Output
Rled
