| 摘要 |
FIELD: manufacture of electric apparatuses, possibly for forced turning on actuating electromagnetic devices of automatic system in oil production, power generation and other branches of industry, particularly in drive units of electromagnetic valves supplied from AC mains. ^ SUBSTANCE: forced electromagnet includes in addition first and second resistors, fourth capacitor and amplifier. First resistor and connected in series second resistor and fourth capacitor are connected in parallel with outlets of first rectifier. Inlet of amplifier is connected with second resistor and with fourth capacitor. In addition first outlet of first rectifier is connected with first inlet of switching unit; second resistor is connected with common outlet of amplifier; second inlet of switching unit is connected with outlet of amplifier. ^ EFFECT: increased duration of forcing pulse of electromagnet. ^ 3 dwg |
