Automatic repair techniques for analog circuits

This paper analyzes evolutionary techniques in the repair and adjust analog circuits. These techniques are useful for systems that need to perform for a long time in harsh environments, such as those employed in industry. These techniques are based on single and multiobjective evolvable algorithms. Each objective has a different influence and importance in the resulting circuit, so it is necessary to distinguish their importance's weight in the evaluation of the circuits. The methods proposed are for extrinsic and intrinsic evolutionary repair and are illustrated by repairing the circuits of an amplifier and a TTL gate.