Controller for an actuator driving circuit with abnormal tempera

Details Controller for an actuator driving circuit with abnormal tempera Controller for an actuator driving circuit with abnormal tempera

1996-03-14

1998-11-17

Wong, Peter S.

Incremental printing of symbolic information

Ink jet

Controller

347 17, 219216, 219501, B41J 2938, H05B 100, H05B 102

Patent

active

058383417

ABSTRACT:
To prevent a driving circuit from being thermally destroyed, each of a plurality of driving units has a temperature sensor which is a diode train consisting of a plurality of junction diodes connected in series. An output line is connected to temperature sensor to output a temperature signal indicative of the temperature of the corresponding driver. Such output lines derived from the plurality of driving units are commonly connected to form a common connection point. The common connection point outputs a combined temperature signal indicative of the temperature in drivers of the plurality of driving units. A controller is connected to the common connection point to receive the combined temperature signal, and determines whether or not at least one of the plurality of driving units is in a temperature abnormality condition based on the combined temperature signal.

REFERENCES:
patent: 4322733 (1982-03-01), Moriguchi et al.
patent: 5132709 (1992-07-01), West

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