One case holds the power supply, and the other contains ... his local 230V mains down to +25V and -25V. The amplifier circuit itself is simple – a few discrete components surround the LM3886 ...
a very simple op amp circuit with some detail omitted ... performance with and without a 1x amplifier This circuit demonstrates the power of a 1x amplifier. Both voltage dividers produce 2.5V ...
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