FIELD: warning devices. SUBSTANCE: warning device has power buses 1, 6, series-connected pilot lamp 2, resistors 3, 4, and capacitor 5 connected to the former, heater 7 connected in parallel with pilot lamp 2 and resistor 3, voltage regulator 8 connected to heater 7, and pilot lamp 11; in addition, it is provided with voltage regulator diode 9 and resistor 10 which enable pilot lamp 11 to warn about connection of voltage regulator 8 when heater 7 is serviceable and to warn about open circuit in heater 7 with voltage regulator 8 in ON or OFF state; in addition, linearity of voltage regulation is improved due to connection of balanced voltage regulator diode 8 in series with voltage regulator 8 and heater 7. EFFECT: provision for dispensing with contact members and for more linear voltage regulation. 1 dwg
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SU1257684A1 |
