Vehicle starting DC control circuit - uses trigger and amplifier to integrate nominal and actual current pulses for smooth start

摘要

A starting control circuit for a vehicle ensuring a smooth acceleration has an input connection (a) with a switch (4) between two resistors (1, 2) followed by an amplifier (3) with a control circuit (5) across it. This circuit has a capacitor in parallel with he amplifier and in parallel with both, is a switch (8) and a resistance (7). This switch is connected to the input switch. The output of the amplifier is connected to a resistance (9) by the non inverting input of a trigger (11) and an output terminal (c) one switch is opened when the other is closed and vice versa. A nominal voltage is applied at the input (a) and integrated by the amplifier, the switch (8) is closed and an actual value is obtained at the terminal (b) connected through a resistor to the input of the trigger. This receivers the difference between the actual and nominal values and operates to integrate the current delivered by the two switches giving a smooth output.