FR2541538A1 - Touch-sensitive switch device - Google Patents

Abstract

The present invention relates to an electronic device enabling any electrical appliance to be switched on or off through straightforward touching of keys. The device comprises a part for switching on consisting of four diodes 1, 2, 3, 4, a capacitor 5 and a thyristor 6, and a part for switching off consisting of a thyristor 9. The capacitor 5 keeps the thyristor 6 away from its blocking voltage. The thyristor 9 counteracts the action of the capacitor 5. The device according to the invention is intended to allow the powering of incandescent lamps, fluorescent tubes, electric motors, contactors and transformers.

Description

 The present invention relates to an electronic device making it possible to turn on or off any electrical equipment, and this by a simple touch of the keys.

 Currently, there is a touch switch system based on the use of an integrated circuit.

 The switch according to the invention comprises a device comprising a part for switching on and another part for switching off.

 For the energizing part, the device comprises four diodes (1,2,5,4), a capacitor (5), and a thyristor (6), the triggering of which is effected by touching the cowhide via a resistance (8).

For the power-off part, the device includes a thyristor (9), which neutralizes the action of the capacitor (5), and the triggering of which is also effected by the trigger via a resistor (II? S
It is thanks to the presence of the capacitor (5), that we can obtain the non-blocking of the thyristor (6). Indeed the discharge of this capacitor, every half period allows to maintain the thyristor (6) at a value greater than the value of its blocking.

This device, as it is designed, does not react to interference thanks to the capacitors (7) and (I0)
In the event of a sector fault, the device is automatically returned to the locked position.

The device thus conceived can replace existing pro switches without pro Meme, with increased reliability, and a low cost price,
The assembly can be equipped with a neon indicator (13), - and a resistor (12), which allows you to know the state of the electrical equipment controlled by the switch.

 When the indicator is off, the device is on, when it is on, the device is off.

The components entering this device are for the thyristors, tic 106 D, for the diodes of the
IW 4007, for resistors (8) and (II), two resistors of 4.7 Mohms in series due to safety, for the capacitor (5), a 2.2uF 350 V 5 for the capacitor (IO) , a 3.3 nF, for the capacitor (7), a 47n? , for the indicator (13), a conventional neon indicator, as well as its resistance (I2), of the order of 150 Kohms
The device can be realized on a printed circuit. The latter, taking up little space, can be integrated in a case having on its surface two metal parts, a part for the ignition, and a part for the extinction.

 The metallic part for the lighting can be perforated, allowing the light of the neon indicator to diffuse and thus to make the switch visible at night.

We can also integrate this device into a living room or bedside lamp, as long as we have access to two separate metal parts,
Two modules can be used to obtain back-and-forth operation.

 One can just as easily, if desired, put more than two modules in parallel to carry out a command from several different points.

This device makes it possible to energize various elements such as: - Incandescent lamps
- Fluorescent tubes
- Electric motors
- Contactors
- Transformers the triggering of a thyristor by touching its trigger, was the subject of a patent deposit of Mr BEGRAND
Jacques, deposited in Belgium on December 15, 1977 under the number O / I83 489, and rancid on December 7, 1978 under number 78 345I3. This patent was transformed into a Utility Certificate, then went into the public domain, since the last annuity payment dates from December 12, 1980.

Claims (3)

 I) touch-interrupter device comprising four diodes (I, 2,3,4), mounted in full wave rectification, connected to a capacitor (5), and a thyristor (6); in parallel on this first assembly, a thyristor (9) and a neon indicator (I3) are mounted in series with its resistor (12).  2) Device according to claim I, characterized in that the discharge of the capacitor (5), at each half-cycle, keeps the thyristor (6) out of its blocking voltage.  3) Device according to claim I, characterized in that the neutralization of the function of the capacitor (5) is ensured by the thyristor (9).