Reference resonance circuits are promising for constructing energy-efficient electro-optical discrete light control systems. These systems can be used in annunciator panels at mining enterprises. The most interesting are circuits for programmed generation of bipolar pulses based on the principles of reference resonance. For research of control principles involved in generating such pulses, assessment of their complexity relative to switching circuits with resistive loads, and determination of the deviations of the generated pulses from a rectangular form, a breadboard using MP-42B transistors was developed. ...