Simulation of Optoelectronic Analog Circuits with PSPICE package

  • E. Koleva Technical University of Gabrovo
  • I. Kolev Technical University of Gabrovo
  • I. Balabanova Technical University of Gabrovo


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).

How to Cite
Koleva, E., Kolev, I., & Balabanova, I. (2009). Simulation of Optoelectronic Analog Circuits with PSPICE package. Elektronika Ir Elektrotechnika, 96(8), 99-102. Retrieved from