standby circuit for controlling the electric power supply to a circuit for an electric motor in power steering, in particular a motor brushless

摘要

the circuit of standby (bbc) includes a terminal entry (a) intended to be connected to the front of the steering circuit (ic), a capacitor (c).a first and a second current generator (g1, g2) selectively connect the condenser (c).a first comparator circuit (c1) when the signal (vin) applied to said terminal entry (a) exceeds a prescribed threshold (vso) connects the capacitor (c) with the first current generatorparents (g1) to load said capacitor (c) at constant current.and when said signal (vin) is lower than the threshold (vso) disaccoppia the condenser (c) from the first generator (g1) and connecting it with the second generator (g2) in such a way.carlo at constant current.and a second comparator circuit (c2) which allows the feeding of power to the steering circuit (ic) when the voltage on the capacitor (c) exceeds a predetermined threshold (vs2). (figure 2).