Abstract: An interposer (20) is used for decoupling a microchip (10) on a circuit board (30). The interposer (20) contains on its upper and lower surfaces structured metal layers (26a-26d) for attachment to the microchip (10) and the circuit board (30), respectively. Inside the interposer, there are two sets of mutually isolated metal structures (21, 22) extending substantially perpendicular to the upper and lower surfaces of said interposer (20). The first set (21) extends closer towards the upper surface than the second set (22), while said second set (22) extends closer towards the lower surface than said first set (21).

Abstract: An interposer (20) is used for decoupling a microchip (10) on a circuit board (30). The interposer (20) contains on its upper and lower surfaces structured metal layers (26a-26d) for attachment to the microchip (10) and the circuit board (30), respectively. Inside the interposer, there are two sets of mutually isolated metal structures (21, 22) extending substantially perpendicular to the upper and lower surfaces of said interposer (20). The first set (21) extends closer towards the upper surface than the second set (22), while said second set (22) extends closer towards the lower surface than said first set (21).

Abstract: A circuit for controlling the electric power to be supplied from a direct-current source to a load, particularly to a fan or heater in a motor vehicle. The circuit has a first field-effect transistor, to be connected in series with the load to be controlled, and a control circuit for controlling the field-effect transistor. The first field effect transistor has a second field-effect transistor connected in series therewith, and a resistor is connected in parallel with one of the field-effect transistors. The control circuit is adapted to control the two field-effect transistors in the sense of a fadeover between two final states in each of which one of the field-effect transistors is off and the other is on.

Abstract: A circuit arrangement is disclosed for controlling the electric power to be supplied from a direct-current source to a load, particularly to a fan or heater in a motor vehicle, the circuit arrangement comprising a field-effect transistor to be connected in series with the load to be controlled and a control circuit for controlling the field-effect transistor. The field effect transistor has a second field-effect transistor connected in series therewith, and a resistor is connected in parallel with one of the field-effect transistors. The control circuit is adapted to control the two field-effect transistors in the sense of a fadeover between two final states in each of which one of the field-effect transistors is off and the other is on.

Abstract: In a forward converter having at least one storage inductance, a clock switch connected in series with a winding of the at least one storage inductance, a control circuit for outputting a control signal as a function of the magnitude of an output voltage relative to a set reference voltage, and at least one MOS field effect transistor, MOSFET, which is operated inversely to the clock switch and, during ON periods of the clock switch, provides a free-running circuit via the storage inductance and a load connected at the output of the forward converter, a further transistor operating as an inverter is provided. The further transistor is connected to receive the control signal from the control circuit and is connected to the gate of the at least one MOSFET so that the at least one MOSFET receives the control signal for switching the clock switch via the further transistor as a voltage across the further transistor.

Abstract: In a power supply consisting of parallel-connected converters, each of the converters includes a current sensor. One terminal of each current sensor is connected to one terminal of each of the other current sensors. The other terminal is connected to the converter's pulse-width modulator through a limiter. If any of the converters fails, the limiter ensures that only a small, limited change occurs in the output voltages of the other converters which is permissible in most cases.