OPTIMOD-FM 8200 V3.00 UPGRADE
MANUAL ADDENDUM
I-9
82K 5%
10K 1%
82K 5%
10K 1%
82K 5%
INPUT
1/4 TL074
0.01uF 10%
1/4 TL074
50V
10K 1%
10K 1%
1/4 TL074
50V
0.01uF 10%
82K 5%
10K 1%
1/4 TL074
50V
0.01uF 10%
1K 5%
OUTPUT
10K 1%
Figure 1: Phase Rotator for Microphone Channel
Notes:
Unity Gain, Line Level.
Bypass (+) and (
−
) Power Leads of TL074 to Ground with 0.1
µ
F 50V monolithic ceramic capacitors.
Operate from +15V and
−
15V DC power
.
Many audio opamps could be substituted for the TL074, like a pair of NE5532s.
If you substitute a high-speed amplifier
, layout and power supply bypassing become more critical.
