Self-timing and self-compensating print wire actuator driver

Details Self-timing and self-compensating print wire actuator driver Self-timing and self-compensating print wire actuator driver

1984-10-31

1987-05-19

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Miscellaneous systems

For particular load device

307155, 361152, 361153, 361154, 4001573, 101 9304, H01H 4732

Patent

active

046671170

ABSTRACT:
There is disclosed an improved drive circuit for a print element actuator wherein the current applied to the actuator has a fast rise mode which is terminated when a predetermined level has been reached. Current is allowed to slowly decay through the circuit until it reaches a second and lower predetermined level. The circuit is self-timing and self-compensating for variations in voltage or actuator impedance.

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patent: 4360855 (1982-11-01), Ohba
patent: 4377144 (1983-03-01), Takahashi
patent: 4384520 (1983-05-01), Nakano et al.
patent: 4453194 (1984-06-01), Frankeny et al.
patent: 4485425 (1984-11-01), Gruner et al.

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