Capacitive-load driving circuit and recording head driving circu

Details Capacitive-load driving circuit and recording head driving circu Capacitive-load driving circuit and recording head driving circu

1998-10-09

2000-04-04

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

327111, 327284, H03B 100

Patent

active

060466138

ABSTRACT:
An electric charge is supplied to or received from capacitors (C1, C2) when a piezoelectric element (C3) is charged or discharged by controlling transistors (Q17, Q18, Q15, Q10) which are in a first charging path (CL1) for charging from a power supply to the piezoelectric element (C3), a second charging path (CL2) for charging from the capacitors (C1, C2) to the piezoelectric element (C3), a first discharging path (DL1) for discharging from the piezoelectric element (C3) to ground (G) and a second discharging path (DL2) for discharging from the piezoelectric element (C3) to the capacitors (C1, C2), respectively.

REFERENCES:
patent: 4680488 (1987-07-01), Okumura et al.
patent: 5537067 (1996-07-01), Carvajal et al.
patent: 5729165 (1998-03-01), Lou et al.
patent: 5748019 (1998-05-01), Wong et al.

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