Electric heating – Metal heating – Of cylinders
Patent
1984-10-01
1986-04-15
Albritton, C. L.
Electric heating
Metal heating
Of cylinders
H05B 664
Patent
active
045829705
ABSTRACT:
A switching circuit comprises a first transistor, a second transistor operated to be turn on and off by changing a voltage applied to its gate, and a switching element connected between the first transistor and the second transistor. The switching element is grounded via a first resistor and is connected via a second resistor to a power source for supplying a voltage which is obtained by adding a voltage higher than an estimated noise voltage and a threshold voltage of the second transistor.
REFERENCES:
patent: 3111608 (1963-11-01), Boenning et al.
patent: 3200306 (1965-08-01), Atkins et al.
patent: 3886539 (1975-05-01), Gould, Jr.
patent: 4309584 (1982-01-01), Terakami
Albritton C. L.
Lateef M. M.
Sharp Kabushiki Kaisha
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