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Single OTRA-based current-mode monostable multivibrator with two triggering modes and a reduced recovery time

Single OTRA-based current-mode monostable multivibrator with two triggering modes and a reduced recovery time

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A simple current-mode monostable multivibrator is introduced. The proposed topology consists of a single operational transresistance amplifier (OTRA) as a main active building block with a few external passive elements. The proposed circuit is simpler compared to counterparts composed of op amps and commercially available ICs. The presented topology can be triggered under positive- and negative-triggering modes at different input terminals. Moreover, the proposed topology provides an advantageous feature of shortening the recovery time required for applying the consecutive triggering signal. The operations of the topology previously presented are reviewed. Then, the proposed circuit is described and analysed in detail. The theoretical analysis is verified through experimental results on a prototype circuit. The improvement on reducing the recovery time is also investigated.

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