Heater control circuit

Details Heater control circuit Heater control circuit

1996-01-11

1997-09-30

Paschall, Mark H.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219505, 219209, 374 11, 374 33, H05B 102

Patent

active

056722893

ABSTRACT:
A Control circuit for a differential scanning calorimeter which includes a sample heater, a reference heater, a system for generating a sample heater DC voltage and a system for generating a reference heater DC voltage. A balanced operational amplifier arrangement is provided which includes a circuit for controlling the differential heater voltage and a circuit for independently controlling the average heater voltage, so that the average heater power and the differential heater power are independently controlled.

REFERENCES:
patent: 3643491 (1972-02-01), Dell et al.
patent: 3675465 (1972-07-01), Sommer et al.
patent: 4040288 (1977-08-01), Kotelnikov et al.
patent: 4985683 (1991-01-01), O'Neill
patent: 5098196 (1992-03-01), O'Neill
patent: 5439291 (1995-08-01), Reading

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