Rate compensating monostable multivibrator

Claim 2

A self-compensating, time variable monostable multivibrator circuit comprising: bistable switching means having an even number of inputs for receiving input trigger pulses on one of said inputs and two outputs, one of which outputs is coupled to a load; a pair of time constant networks having unequal time constants to which the other of said outputs of the bistable switching means is coupled for generating a pair of control voltage signals; comparator means for comparing said pair of control voltage signals and for generating a comparison voltage; and means for coupling said comparison voltage to another of said inputs of said bistable switching means for providing self-compensation of said multivibrator.

Claim 3

A multivibrator in accordance with claim 1 wherein said bistable switching means comprises a bistable latch capable of assuming either of two stable states in response to said input trigger pulses, the time duration of which stable states is logarithmically related to said trigger pulse repetition rate.

Claim 4

A multivibrator in accordance with claim 2 wherein said bistable latch comprises first and second switching elements, said first switching element being conductive when said second switching element is nonconductive and said second switching element being conductive when said first switching element is nonconductive.

Claim 5

A multivibrator in accordance with claim 3 wherein the time duration of the stable states of the bistable switching means is approximately linearly related to the output comparison voltage of said comparator means.

Claim 6

A multivibrator in accordance with claim 4 wherein said time constant networks are RC networks having first and second time constants, said first time constant being of greater time duration than said second time constant and of greater duration than the period of said input trigger pulses.

Claim 7

A voltage controlled variable pulse width monostable multivibrator comprising: bistable latching means including a pair of switching elements, each of said switching elements having at least two inputs and one output, means for coupling a pulsed input signal to one input of one of said switching elements; comparator means for deriving a control voltage and for coupling said control voltage to the other input of the switching element to which said pulsed input signal is coupled and for controlling the switching of said latching means, said comparator means having at least two inputs and one output; a first time constant network having a first time constant coupled between the output of one of said switching elements and one of the inputs of said comparator for deriving a first voltage control signal having a substantially linear variation with respect to the pulse width of the output of said latching means; a second time constant network having a second time constant coupled between the output of the other of said switching elements and the other of the inputs of said comparator for deriving a second voltage control signal having a substantially linear variation with respect to the pulse width of the output of said latching means; a feedback network for coupling the output of one of said switching elements of said latching means to said first and second time constant networks; means for coupling the output of said switching element of said latching means to which said control voltage is coupled to a load and to one input of the other switching element; and means for coupling a reference voltage to the other input of said other switching element.

Claim 8

A voltage controlled variable pulse width monostable multivibrator comprising: bistable latching means including a pair of switching elements, each of said switching elements having at least two inputs and one output, means for coupling a pulsed input signal to one input of one of said switching elements; comparator means for deriving a control voltage and for coupling said control voltage to the other input of the switching element to which said pulsed input signal is coupled and for controlling the switching of said latching means, said comparator means having at least two inputs and one output; a first time constant network having a first time constant coupled between the output of one of said switching elements and one of the inputs of said comparator for deriving a first voltage control signal having a substantially linear variation with respect to the pulse width of the output of said latching means; a second time constant network having a second time constant coupled between the output of the other of said switching elements and the other of the inputs of said comparator for deriving a second voltage control signal having a substantially linear variation with respect to the pulse width of the output of said latching means; a feedback network for coupling the output of one of said switching elements of said latching means to said first and second time constant networks; means for coupling the output of said switching element of said latching means to which said control voltage is coupled to a load and to one input of the other switching element; and means for coupling a reference voltage to the other input of said other switching element.

Claim 9

A monostable multivibrator in accordance with claim 6 wherein said first time constant network comprises an RC circuit having a time constant which is of a longer time duration than the repetition period of said pulsed input signal and wherein said second time constant network comprises an RC circuit having a time constant which is of less time duration than the repetition period of said pulsed input signal.

Claim 10

A monostable multivibrator in accordance with claim 7 wherein said control voltage derived from the comparison of said first and second voltage control signals by said comparator means varies substantially linearly with the pulse width of the output of said latching means.

Claim 11

A monostable multivibrator in accordance with claim 8 wherein the pulse width of the output of said bistable latching means is logarithmically related to the pulse repetition rate of said pulsed input signal.

Claim 12

A monostable multivibrator in accordance with claim 7 wherein the pulse width of the output of said bistable latching means is logarithmically related to the pulse repetition rate of said pulsed input signal and said control voltage varies substantially linearly with the pulse width of the output of said latching means.

Claim 13

A monostable multivibrator in accordance with claim 10 wherein said switching elements comprise voltage comparators which assume either a conducting or non-conducting state in response to the voltages applied at the inputs thereto.