Converter devices

Claim 2

Converter device adapted to transform a first signal, generated by a source of direct current having a first and a second terminal, into a second signal having an amplitude substantially greater than that of said first signal, at least for certain values of said first signal, and comprising a first transistor having its emitter connected in operation to said second terminal of said source, an inductance with a high overvoltage coefficient with one terminal directly connected to the collector of said first transistor and the other terminal connected to said first terminal of said source, a second transistor having its collector directly connected to the base of said first transistor and its emitter connected in operation to one of said terminals of said source, a connecting capacitor having first and second terminals, the first terminal being directly connected to the collector of said first transistor and the second terminal being directly connected to the base of said second transistor, and a polarizing resistor connected directly between the base of said second transistor and the terminal of said source which is not connected to the emitter of said second transistor.

Claim 3

Converter device according to claim 1, wherein said first and second transistors are of the same conductivity type and the emitter of said second transistor is connected to the second terminal of said source and which further comprises a second polarizing resistor arranged between said first terminal of the source and the base of said first transistor.

Claim 4

Converter device according to claim 1, wherein said source is constituted by a single element battery.

Claim 5

Converter device according to claim 1, comprising a second capacitor, means for charging this said second capacitor by the signal delivered by said inductance, a circuit for discharging said capacitor comprising in series a thyristor and the primary winding of a transformer, a Zener diode whose critical voltage is less than the maximum charging voltage of said second capacitor, said Zener diode being connected between the anode and the trigger of said thyristor with its anode connected to said trigger and its cathode to the anode of said thyristor, and a resistor connected between the trigger and the cathode of said thyristor.

Claim 6

Converter device according to claim 1, comprising rectifier means for rectifying the signal delivered at the terminals of the inductance and regulator means for regulating the signal delivered by said rectifier means.

Claim 7

Converter device according to claim 5, wherein the regulator means comprise a capacitor and a Zener diode having its cathode connected to one terminal of said capacitor of the regulator means and its anode connected to the base of said second transistor.

Claim 8

Converter device adapted to transform a first signal, generated by a single element battery source having a first and a second terminal into a second signal having an amplitude substantially greater than that of said first signal and comprising a first transistor having its emitter connected in operation to said second terminal of said source, a high overvoltage coefficient inductance, arranged in the collector circuit of said first transistor with its first terminal directly connected to the collector of the first transistor and its other terminal connected to said first terminal of said source, a second transistor with its collector directly connected to the base of said first transistor, a polarizing resistor, a capacitor having first and second terminals, the first terminal being directly connected to the collector of said first transistor and the second terminal being directly connected to the base of said second transistor and to a terminal of said single element battery through said polarizing resistor, the other terminal of the battery being connected to the emitter of the said second transistor, and recitifier means to rectify the signal delivered at the terminals of said inductance.

Claim 9

Converter device adapted to transform a first signal, generated by a single element battery source having a first and a second terminal into a second signal having an amplitude substantially greater than that of said first signal and comprising a first transistor having its emitter connected in operation to said second terminal of said source, a high overvoltage coefficient inductance, arranged in the collector circuit of said first transistor with its first terminal directly connected to the collector of the first transistor and its other terminal connected to said first terminal of said source, a second transistor with its collector directly connected to the base of said first transistor, a polarizing resistor, a capacitor having first and second terminals, the first terminal being directly connected to the collector of said first transistor and the second terminal being directly connected to the base of said second transistor and to a terminal of said single element battery through said polarizing resistor, the other terminal of the battery being connected to the emitter of the said second transistor, and recitifier means to rectify the signal delivered at the terminals of said inductance.

Claim 10

Converter device according to claim 7, comprising regulator means to regulate the signal delivered by the rectifier means.

Claim 11

Converter device according to claim 8, wherein the regulator means comprise a capacitor and a Zener diode having its cathode connected to one terminal of the capacitor of the regulator means and its anode connected to the base of the second transistor.

Claim 12

Converter device according to claim 7, wherein said inductance comprises a coil and a core of ferrite on which said coil is wound.

Claim 13

Converter device as defined in claim 1, wherein said inductance is constituted by a coil wound on a ferrite core.

Claim 14

Converter device according to claim 11, wherein said core of ferrite forms a closed circuit.

Claim 15

Converter device according to claim 12, wherein said closed circuit has the shape of a torus.

Claim 16

Converter device as defined in claim 6, wherein the Zener voltage of said Zener diode is lower than the maximum voltage appearing at said one terminal of said inductance.

Claim 17

Converter device as defined in claim 5, wherein the regulator means comprises a capacitor connected to the output of said rectifier means and a Zener diode connected between the terminals of said capacitor of the regulator means.

Claim 18

Converter device as defined in claim 15, wherein the Zener voltage of said Zener diode is less than the maximum voltage appearing at the terminal of said inductance to which is connected said Zener diode.

Claim 19

Converter device adapted to transform a changing direct signal generated by a source of direct current, into a signal whose amplitude is substantially greater than that of said changing signal, at least for certain values of this signal, this device comprising a first transistor, and including, in combination, an inductance with a high overvoltage coefficient arranged in the collector circuit of said first transistor, so that one terminal of this inductance is directly connected to the collector of said transistor, a second transistor of which the collector is directly connected to the base of the first transistor, a connecting capacitor having first and second terminals, the first terminal being directly connected to the collector of the first transistor and the second terminal being directly connected to the base of the second transistor, and a polarizing resistance arranged directly between the base of the second transistor and one terminal of said source, wherein the transistors are of opposite conductivity type and the collector of the second transistor is connected only to the base of the first transistor.

Claim 20

Converter device adapted to transform a changing direct signal generated by a source of direct current, into a signal whose amplitude is substantially greater than that of said changing signal, at least for certain values of this signal, this device comprising a first transistor, and including, in combination, an inductance with a high overvoltage coefficient arranged in the collector circuit of said first transistor, so that one terminal of this inductance is directly connected to the collector of said transistor, a second transistor of which the collector is directly connected to the base of the first transistor, a connecting capacitor having first and second terminals, the first terminal being directly connected to the collector of the first transistor and the second terminal being directly connected to the base of the second transistor, and a polarizing resistance arranged directly between the base of the second transistor and one terminal of said source, wherein the transistors are of opposite conductivity type and the collector of the second transistor is connected only to the base of the first transistor.