| 摘要 |
PURPOSE:To protect a circuit against troubles cause by the unloaded high voltage of an electric source by providing a circuit to keep one of two lamps lit when another lamp is disconnected. CONSTITUTION:When a flasher lamp 109 is disconnected and then winker switches 105a and 105b are thrown into the right, a charging circuit is off to a condenser 18, and the circuit is not operated. Consequently, a flasher lamp 107 is continuously lit. In case the flasher lamp 109 is disconnected during on-off operation, when a relay is off and a contact 1 is on the side of break, the condenser 18 is discharged by a resistance 15. If this discharging time is kept shorter than the off-time of the relay during the normal on-off operation, the condenser 18 is perfectly discharged during the off-time of the relay, and cannot be again on. Therefore, the lamp 107 is continuously lit. |
