| Patent Number |
Title Of Patent |
Date Issued |
| RE38634 |
System appliance and cartridge for personal body care |
October 26, 2004 |
| The system comprises, for example, an electric shaver (1) and a cartridge (2) mounted in a chamber (12) of the shaver (1). The shaver (1) comprises a shaving head (3) having drivable cutters (31) and an electric motor (11) for driving the cutters (31) via a coupling pin (14). The cartrid |
| 6131288 |
System appliance and cartridge for personal body care |
October 17, 2000 |
| The system comprises, for example, an electric shaver (1) and a cartridge (2) mounted in a chamber (12) of the shaver (1). The shaver (1) comprises a shaving head (3) having drivable cutters (31) and an electric motor (11) for driving the cutters (31) via a coupling pin (14). The cartrid |
| 6016260 |
Switched-mode power supply with current and voltage limitation |
January 18, 2000 |
| A switched-mode power supply uses duty cycle control for the switching transistor. The primary current through the primary winding is sensed by means of a sensing resistor in series with the switching transistor. The voltage across the sensing resistor is differentiated, compared with a |
| 5852549 |
Power-supply circuit |
December 22, 1998 |
| In a self-oscillating power-supply circuit for charging a battery, a switching transistor (T2) is turned off if the voltage across a sensing resistor (R3) exceeds the threshold voltage of a zener diode (D5). The zener diode is arranged in parallel with the series arrangement of the b |
| 5847940 |
Power-supply circuit |
December 8, 1998 |
| In a self-oscillating power-supply circuit for charging a battery (B) the switching transistor (T2) is turned off if the voltage across the sensing resistor (R3) exceeds the threshold voltage of a zener diode (D5). Instead of the zener diode (D5) it is possible to use a switching transis |
| 5838553 |
Voltage stabilized self-oscillating power supply |
November 17, 1998 |
| In a self-oscillating power-supply circuit for charging a battery, the main switching transistor is turned off by a second switching transistor (T2) of an opposite conductivity type, which is arranged in series with the main switching transistor (T1) via a sensing resistor (R8). This |
| 5757629 |
Switched-mode power supply with compensation for varying input voltage |
May 26, 1998 |
| In a switched-mode power supply a coil is periodically connected across an input voltage by means of a switching element. The switching element is turned off when the voltage across a sensing resistor in series with the switching element exceeds a given threshold. The threshold is reache |
| 5717320 |
Power supply circuit |
February 10, 1998 |
| A buck converter comprises a load or a rechargeable battery (B), a self-inductance (L2), a diode (D2) and a switching transistor (T1). The current through the switching transistor (T1) is measured by means of a current sensor (Rs) which triggers a monostable multivibrator (MMV) when a |
| 5412332 |
Drive circuit for a flyback converter with switching transistors in bridge arrangement |
May 2, 1995 |
| A flyback converter including a first (6) and a second (8) switching transistor, a first (10) and a second (12) rectifier diode, and a primary winding (14) of a transformer, which parts are connected in a bridge arrangement. The first switching transistor (6) receives its drive by po |
