TY - JOUR AU - Koleva, E. AU - Kolev, I. AU - Balabanova, I. PY - 2009/10/20 Y2 - 2024/03/29 TI - Simulation of Optoelectronic Analog Circuits with PSPICE package JF - Elektronika ir Elektrotechnika JA - ELEKTRON ELEKTROTECH VL - 96 IS - 8 SE - DO - UR - https://eejournal.ktu.lt/index.php/elt/article/view/9962 SP - 99-102 AB - <p>The purpose of the work is simulation of two circuits for transmitting analog signals within the audio range with low distortion and good galvanic separation by means of a PSPICE software package. Phototransistor optocouplers of a normal and inverse operating mode of the optocoupler phototransistor have been used. The time diagrams of the signals and the amplitude-frequency characteristic have been given. Methods for calculating the basic parameters have been elaborated. The circuits have been developed in practice. The sim ulation and calculation error has been determined – it does not exceed 10 %. When the optocoupler phototransistor operates in an inverse mode, the frequency band of the stage expands notwithstanding the decrease of the adjacent voltage amplification factor. Ill. 7, bibl. 4, tabl. 1 (in English; abstracts in English, Russian and Lithuanian).</p> ER -