Monostable multivibrator

Claim 2

In combination: a pair of terminals connectable to a source of DC voltage providing respectively a first voltage and a second lower voltage at said terminals; first and second switching devices each coupled between said terminals and each having an input and an output, each of said devices providing a voltage representative of said first voltage to the output thereof when a voltage which is applied to the input thereof is below a certain transfer voltage associated with that device and each of said devices providing a voltage representative of said second voltage to the output thereof when a voltage which is applied to the input thereof is above said certain transfer voltage; first time-constant determining means having a first time constant and being connected to the input of said first device, the signal appearing at the output of said first device having a time duration of a first certain time dependent upon said first time constant; means including a second time-constant determining means for electrically connecting the output of said first device to the input of said second device; said second time-constant determining means having a second time constant, the signal appearing at the output of said second device having a time duration of said first certain time and a second certain time, said second certain time being dependent upon said second time constant.

Claim 3

The invention according to claim 1 wherein said first and said second time-constant determining means each respectively comprises a resistance and capacitance, the values of the resistances and the capacitances being equal in said first and second time-constant determining means respectively.

Claim 4

The invention according to claim 1 wherein said first and second switching devices are each complementary symmetry metal-oxide semiconductor inverter circuits.

Claim 5

The invention according to claim 3 wherein said means connecting the output of said first device to the input of said second device includes a diode serially connecting the output of said first device to the input of said second device.

Claim 6

A multivibrator for providing a pulse signal at an output thereof in response to a signal applied to an input thereof, comprising: a source of DC voltage having two terminals, there being respectively a more positive voltage and a less positive voltage at said terminals; first and second switching devices each coupled between said terminals and each having an input and an output, each of said devices providing a voltage representative of said more positive voltage to the output thereof when a voltage which is applied to the input thereof is below a certain transfer voltage associated with that device and each of said devices providing a voltage representative of said less positive voltage to the output thereof when a voltage which is applied to the input thereof is above said certain transfer voltage, said transfer voltages of said devices being equal; first means, including a serially connected first reactance and first resistance which has a first time constant associated therewith, coupled between said multivibrator input and one of said terminals, said reactance being coupled to said input, and means coupling the junction of said first reactance and first resistance to the input of said first device; second means, including a diode, for connecting the output of said first device to the input of said second device, said diode being poled so that it is nonconductive whenever the output of said first device and the output of said second device have voltages thereat representative of the same terminal of said source; and third means, including a second reactance and a second resistance connected in parallel, and having a second time constant associated therewith, said third means being connected between said other terminal and the input of said second device, said first time constant being equal to said second time constant.

Claim 7

A multivibrator for providing a pulse signal at an output thereof in response to a signal applied to an input thereof, comprising: a source of DC voltage having two terminals, there being respectively a more positive voltage and a less positive voltage at said terminals; first and second switching devices each coupled between said terminals and each having an input and an output, each of said devices providing a voltage representative of said more positive voltage to the output thereof when a voltage which is applied to the input thereof is below a certain transfer voltage associated with that device and each of said devices providing a voltage representative of said less positive voltage to the output thereof when a voltage which is applied to the input thereof is above said certain transfer voltage, said transfer voltages of said devices being equal; first means, including a serially connected first reactance and first resistance which has a first time constant associated therewith, coupled between said multivibrator input and one of said terminals, said reactance being coupled to said input, and means coupling the junction of said first reactance and first resistance to the input of said first device; second means, including a diode, for connecting the output of said first device to the input of said second device, said diode being poled so that it is nonconductive whenever the output of said first device and the output of said second device have voltages thereat representative of the same terminal of said source; and third means, including a second reactance and a second resistance connected in parallel, and having a second time constant associated therewith, said third means being connected between said other terminal and the input of said second device, said first time constant being equal to said second time constant.

Claim 8

The invention according to claim 5 wherein said one terminal is the terminal having said more positive voltage thereat, said other terminal is the one having said less positive voltage thereat, said reactance is a capacitor, said input signal has a relatively sharp negative-going portion and the anode of said diode is coupled to the output of said first device, the cathode of said diode being coupled to the input of said second device.

Claim 9

The invention according to claim 5 wherein said first and second switching devices are each complementary symmetry metal-oxide semiconductor inverter circuits.

Claim 10

The invention according to claim 5 wherein said first and second switching devices are each complementary symmetry metal-oxide semiconductor inverter circuits which appear oN the same integrated circuit chip.