VOLTAGE CONTROL DEVICE Russian patent published in 1994 - IPC

FIELD: measurement technology. SUBSTANCE: device has reference voltage source connected to comparator input, light emitting diode, voltage divider, three threshold elements, switch, transistor, capacitor and resistors. Introduction of two threshold elements at comparator input connected to voltage from nominal value. Connection of third threshold element and transistor at comparator output provides steady operation of device for flickering when input voltage exceeds tolerable value and ensures widening of lower limit of controlled voltage with steady lighting of light emitting diode. EFFECT: enlarged operating capabilities. 1 dwg