Power on & heat-retaining electronic timer for electric heating device

The utility model provides an electronic timer for an electric warmer, which is composed of a shell, two plugs, a work display lamp and a circuit installed in the shell. Grid frequency is used as a time base alternate current signal to pulse counting by the electronic timer, and the circuit is trigg...

Full description

Saved in:
Bibliographic Details
Main Author HU YUNYANG
Format Patent
LanguageEnglish
Published 24.03.1993
Edition5
Subjects
BLASTING
DOMESTIC HOT-WATER SUPPLY SYSTEMS
DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATINGSYSTEMS
ELEMENTS OR COMPONENTS THEREFOR
HEATING
LIGHTING
MECHANICAL ENGINEERING
RANGES
VENTILATING
WEAPONS
Online AccessGet full text

Cover

More Information
Summary:The utility model provides an electronic timer for an electric warmer, which is composed of a shell, two plugs, a work display lamp and a circuit installed in the shell. Grid frequency is used as a time base alternate current signal to pulse counting by the electronic timer, and the circuit is triggered and driven to control the power input of the electric warmer via the counting of a traveling wave number meter and the control signal output by the circuit of an and door to implement timing energizing heat accumulation. In addition, a protection function circuit is also arranged. The utility model has the advantages of reasonable design, low cost, high precision and high reliability.
Bibliography:Application Number: CN1992226965U