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The 22pF capacitors marked * are to prevent the op-amps from oscillating, however, due to the high value of the feedback resistor, the form a low pass filter. At 22pF, the effect is fairly insignificant. If you have an oscilloscope and can check these outputs, you may try omitting the 22pF capacitors.
== Construction ==
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! Pad ID!!style="text-align:left"|Function
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* For the 20k trimmer, anything between 20k and 50k is adequate.
* 330R refers to 330 ohms. 100n = 0.1μF.
▲* The module will work on +/-12 volts or +/-15 volts.
* PCB is 6" x 1.5" with 3mm mounting holes 0.15" in from the edges. Extra holes are provided to match the CGS91 mounting rails, with left or right offsets, or centered.
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