| 摘要 |
PURPOSE:To facilitate detection of a distributor's rotary position, by changing the frequency of an oscillator by changing the electrostatic capacity between a rotor and side electrode. CONSTITUTION:When a rotor 105 is opposed to a side electrode 106, the capacity between them is large and the frequency of an oscillating circuit 110 is high. The oscillating output is converted by a frequency-voltage converter 120 into voltage and put in a comparator 131 which triggers a 'zero' level signal to stimulate a luminous diode 139. When the rotor 105 is not opposed to the side electrode 106, the capacity is reduced, the oscillating frequency of the circuit 110 is low and the diode 139 is dull. |
