JPS5516262A - Clock for car - Google Patents
Clock for carInfo
- Publication number
- JPS5516262A JPS5516262A JP8920878A JP8920878A JPS5516262A JP S5516262 A JPS5516262 A JP S5516262A JP 8920878 A JP8920878 A JP 8920878A JP 8920878 A JP8920878 A JP 8920878A JP S5516262 A JPS5516262 A JP S5516262A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- signals
- circuit
- clock
- terminals
- 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.)
- Granted
Links
Landscapes
- Electric Clocks (AREA)
- Electromechanical Clocks (AREA)
Abstract
PURPOSE: To selectively connect several kinds of clock drive portions by means of one kind of drive circuit, by modulating frequency dividing signals with comparatively high frequency dividing signals with comparatively low frequency.
CONSTITUTION: A frequency dividing circuit 1b of a drive circuit 1 divides the reference frequency of a crystal oscillation circuit 1a, generates clock pulses in 64Hz and 1/12Hz, inputs the pulses to a modulation circuit 1c and sends out modulation signals to terminals X, Y. A two pointers system clock drive portion 2 takes pulses in 1/12Hz in a motor by connecting the input terminals of the motor to the terminals X, Y. In this case, the winding of the motor functions as a fillter element because an AC motor is used, thus directly driving the motor by modulation signals by means of the circuit 1c. If the drive portion is also connected to the terminals X, Y in a three pointers system clock needing clock signals in 64Hz, the motor is driven in the same manner as mentioned above when employing the AC motor. When using a DC motor, the motor can be driven if continuous signals in 64Hz are obtained by employing an OR gate.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8920878A JPS6010591B2 (en) | 1978-07-20 | 1978-07-20 | vehicle clock |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8920878A JPS6010591B2 (en) | 1978-07-20 | 1978-07-20 | vehicle clock |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5516262A true JPS5516262A (en) | 1980-02-04 |
JPS6010591B2 JPS6010591B2 (en) | 1985-03-18 |
Family
ID=13964292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8920878A Expired JPS6010591B2 (en) | 1978-07-20 | 1978-07-20 | vehicle clock |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6010591B2 (en) |
-
1978
- 1978-07-20 JP JP8920878A patent/JPS6010591B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6010591B2 (en) | 1985-03-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE68922049D1 (en) | Pulse-width modulated power supply with the ability to suppress modulation frequency signal components of earth potentials. | |
CA2256188A1 (en) | Opto-electronic frequency divider circuit and method of operating same | |
EP0173158A3 (en) | Liquid crystal display device | |
JPS5516262A (en) | Clock for car | |
JPS5350422A (en) | Ac motor drive system | |
JPS5420525A (en) | Semi-automatic clutch control device | |
JPS5592589A (en) | Controller for operation of induction motor | |
JPS52100997A (en) | Display control system | |
JPS54153218A (en) | Driving system of step motor | |
JPS5635511A (en) | Modulating system for multiphase pulse duration | |
JPS57111121A (en) | Pulse width modulating method and its circuit by negative feedback circuit configuration | |
JPS49113671A (en) | ||
JPS53114391A (en) | Driving power circuit for liquid crystal | |
JPS5340297A (en) | Driving system of liquid crystal display unit | |
JPS5323291A (en) | Voltage converter circuit | |
JPS5552654A (en) | Signal transmission system | |
JPS5635505A (en) | Amplitude modulating system by modulation of multiphase pulse duration | |
JPS56149827A (en) | 90 phase difference signal generating circuit | |
JPS5415618A (en) | Liquid crystal driving circuit | |
JPS6435526A (en) | Optical modulator | |
JPS5536868A (en) | Liquid crystal load driving circuit | |
JPS56160111A (en) | Amplifier of pulse duration modulated signal | |
JPS5342314A (en) | Drive system for ac motor | |
JPS6484948A (en) | Demodulation system for frequency modulation signal | |
JPS55491A (en) | Electronic watch |