| 摘要 |
The output of a charging circuit (3) is connected to the input of a distribution capacitor (4), and also to a change-over switch (5) parallel to the capacitor for discharging the latter. The control input of the switch is coupled to an output of an indicator (6) which monitors the already travelled path of the vehicle. The indicator provides a pulse-form signal after each predetermined section of road travelled. The distribution capacitor output is connected to the input of an intermediary circuit (10), the output of which is connected to a second indicator (12) via an amplifier (11). A transmission change-over switch (9) is connected between the capacitor and the intermediary circuit, and has a circuit (13) for restricting the rise speed of a specific usage signal. It also limits (14) the speed of decrease, with both circuits being parallel connected between the capacitor and amplifier outputs. Between the travelled journey indicator and the discharge change-over switch are two series-connected monostable flip-flop circuits. |
