JPS6450618A - Driving circuit for capacitive load - Google Patents
Driving circuit for capacitive loadInfo
- Publication number
- JPS6450618A JPS6450618A JP20746287A JP20746287A JPS6450618A JP S6450618 A JPS6450618 A JP S6450618A JP 20746287 A JP20746287 A JP 20746287A JP 20746287 A JP20746287 A JP 20746287A JP S6450618 A JPS6450618 A JP S6450618A
- Authority
- JP
- Japan
- Prior art keywords
- capacitive load
- discharging
- power supply
- charging
- driving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Electronic Switches (AREA)
Abstract
PURPOSE:To make the size of driving power supply small by connecting the driving power supply, a switching element, an inductance element and a capacitive load in series, and switching timely the switch element while monitoring a voltage of the capacitive load thereby charging/discharging the capacitive load very efficiently. CONSTITUTION:A control circuit S controls a circuit where the driving DC power supply 1 having a voltage VS, a reed relay 2, a coil 3 and the capacitive load 4 are connected. Then an external control signal SI with a high level commands the charging of the capacitive load 4 and that with a low level commands the discharging. An operational amplifier A1 of the control circuit S forms a differentiation device together with a capacitor C3 and a resistor R3 and its output is VD. When the differentiation output VD being the result of differentiating and inverting the charging voltage VC is again '0', the reed relay 2 is opened. Then the driving circuit for the capacitive load 4 has only the reactive element only in case of both charging and discharging. Then the energy is not consumed and the energy charged in the capacitive load 4 is regenerated all to the power supply at the time of discharging.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20746287A JPS6450618A (en) | 1987-08-20 | 1987-08-20 | Driving circuit for capacitive load |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20746287A JPS6450618A (en) | 1987-08-20 | 1987-08-20 | Driving circuit for capacitive load |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6450618A true JPS6450618A (en) | 1989-02-27 |
Family
ID=16540169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20746287A Pending JPS6450618A (en) | 1987-08-20 | 1987-08-20 | Driving circuit for capacitive load |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6450618A (en) |
-
1987
- 1987-08-20 JP JP20746287A patent/JPS6450618A/en active Pending
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