SU1366976A1 - Device for checking gain factor of inverters - Google Patents

Description

(21) 3559779 / 24-21

(22) 12/07/82

(46) 01/15/88. Bul № 2

(71) Research Institute of Watch Industry

(72) B., D. Dvornikov, V.- G.-Kalinin and E. Kh. Chichev

(53) 621.317.799 (088.8)

(56) USSR Author's Certificate No. 392504, cl. G 06 F 15/46, 1971.

Handbook of integrated microcircuits / Ed. B. V. Tarabrina. - M .: Energ.i, 1981, p. 544, fig. 4-30 in.

(54) DEVICE FOR CONTROLLING THE GAIN FACTOR OF INVERTERS

(57) The invention relates to the control of electronic components of time devices, in particular, devices for controlling the gain (CG) of a CMOS inverter used as an active element of a quartz crystal wristwatch generator, and can be used in the watch industry. The aim of the invention is to increase device speed and reliability by automating the measurement process. The device contains a power supply 1, a unit for forming reference voltages, a unit for forming a linearly varying voltage, terminals 4 and 5 for connecting a controlled object, a repeater 7, comparators 8 and 9, element 10, measuring blocks 11, control 12 , indications 13. Block 3 includes a crystal oscillator 14, a counter 15 and an integrator 16. The measuring block contains a counter 17, a register 18, a code comparison circuit 19. The structure of block 12 includes triggers 20-22, elements OR 23 and 24, and the driver 25 of the signal of the initial installation. Elements 26 and 27, element OR 28, indicators 29 and 30 are included in the display unit. Operation of the device is explained by the timing diagrams provided in the description of the invention. The device allows you to control the KU not only CMOS, but also a wider inverters. 2 Il.

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The invention relates to means of monitoring electronic components of time devices, namely, devices for controlling the gain of a CMOS inverter used as an active element of a quartz crystal wrist watch generator, and can be used most effectively in the watch industry,

The purpose of the invention is to increase device speed and reliability by automating the measurement process.

Fig. 1 shows the structure of the device; in fig. 2 - time diagrams that show his work.

The device contains a power source 1, a unit for forming reference voltages, a unit for forming a linearly varying voltage, keys 4 and 5, clamps for connecting the monitored object 6, a repeater 7, compartors 8 and 9, element 10, measuring unit 11, the control unit 12 and the display unit 13, the first output of the linearly varying voltage generating unit 3 is connected via a switch 5 to a terminal for connecting the monitored object 6, the output of which is connected to the first inputs of the comparators 8 and 9 via the repeater 7, the second inputs to They are connected respectively to the first and second outputs of the reference voltage generation unit 2, the third output of which is connected to the second input of the linear voltage generation unit 3, and the input of the reference voltage generation unit 2 is connected to the first output of the power source 1, the second output of which through the key 4 is connected to the input of one of the power poles of the terminals for connecting the monitored object 6, the input of the second power pole of which is connected to the common bus of the device, the output of the comparator 8 is connected to the first electrical input And 10, the output of the comparator 9 is connected to the second inverting input of the element 10, the third input of which is connected to the second output of the linearly varying voltage generating unit 3 and the second input of the control unit 12, the first input of which is connected to the Start signal terminal, and the third input - with the output of the element 10 and the first input of the measuring unit 11, the first output of the control unit 12 is connected to the first input of the unit 3 forming a linearly varying voltage, the second output - to the control inputs of keys 4 and 5, the third output - to the second input m measuring unit 11, the fourth output with the second input of the display unit 13, the fifth output with the third input of the display unit 13, the first input of which is connected to the output of the measuring unit 11, the third input of which is connected to the third output of the linearly varying forming unit 3 wives

The linearly variable voltage shaping unit 3 comprises a crystal oscillator 14, a counter 15 and an integrator 16, the output of the crystal oscillator 14 being connected to the counting input of the meter

15 and the third output of the block, the input R of the counter 15 is connected to the first input. the block house, the single output of the higher bit of the counter 15 is connected to the first input of the integrator 16 and the second output of the block, the second input of the integrator

16 is connected to the second input of the block, and the output of the integrator 16 is connected to the first output of the block.

Measuring unit 11 contains. the counter 17, the register 18 and the code comparison circuit 19, the inputs V, R and C of the counter 17 are connected respectively to the first, second and third block inputs, the outputs of the counter 17 are connected to the first input group of the code comparison circuit 19, the second input group of which is connected to . the outputs of register 18, the input of the comparison circuit of codes 19 is connected to potential 1, and the output of the comparison circuit of codes 19 is connected to the output of the block.

Block 12 control-Aveni contains triggers 20-22, elements OR 23 and 24 and shaper 25 initial setup signal, the output of which is connected to the first inputs of the elements OR 23 and 24, while the first input of the block is connected to the input S of the trigger 20 and the second element input OR 23, the output of which is connected to the inputs R of the flip-flops 21 and 22 and the third output of the block, the reverse output of the flip-flop 20 is connected to the first output of the block, and the single output of the flip-flop 20 is connected to the input D of the flip-flop 21 and the second output of the block is the single output of the flip-flop 21 connected

with the second input element OR 24 and the fifth output of the block, the second input of the block is connected to the input C of the flip-flop 21 and the input D of the flip-flop 22, the unit output of which is connected to a quarter} output of the block, the output of the OR-24 element is connected to the input of the R-flip-flop 20, and input C trigger 22 is connected to the third input of the block.

The display unit 13 contains AND elements 26 and 27, an OR element 28 and indicators 29 and 30, the first input of the AND element 26 is connected to the first, inverting element input of the AND 27 element and the second input of the block, the second input of the And element 26 is connected to the second input And 27 and the third block input, the third inverting input of the AND 26 element is connected to the first input of the OR 28 element and the first block input, the output of the AND 27 element is connected to the second input of the OR 28 element, indicators 29 and 30 are connected respectively to the outputs of the AND element 26 and the element OR 28.

When the power is turned on, the shaper 25 of the initial setup signal in the control unit 12 forms

The effect of a single output of the trigger 20 through the second output of the control unit 12. At the same time, the supply voltage and the input signal to the terminals for connecting the monitored object

6 not served, at repeater output

In this case, the potential O is set, which leads to the formation of 8 and 9 levels O at the outputs of the Comparators. At the output of the measuring unit I1, in the initial state there is a level O, which in the presence of levels O at the single outputs of the trigger 2) and 22, consequently, at the fifth and fourth outputs of the control unit 12, the indicators 29 and 30 of the display unit 13, which can be used, for example, an LED or incandescent lamp, are in the off state, t, e, not light ts due to the presence of the output element and AND 26 and OR 28

5 levels o

The operation of the device begins when: the start command is received, which is given after the connection of the control 5

0

at its output is a pulse that is via a ruble inverter and means for

the cut element OR 23 is fed to the inputs R of flip-flops 21 and 22 and through the element OR 24 to the input R of flip-flop 20 and the third output of the control unit 12, from where it goes to the second input of the measuring unit 11 and, therefore, to the input R of the counter 17, set the triggers 20-22 and counter 17 to zero. A high level from the inverse output of the trigger 20 is fed to the input R of the counter

15, keeping it in the zero state. The zero level from the unit output of the highest bit of the counter 15 is fed to the first integrator input

16, made, for example, on the basis of an operational amplifier, and on the third input of the element I 10, prohibiting the formation of a signal at its output. At the output of the integrator 16, if there is a level at the first input of the integrator using the reference voltage supplied to the second input of the unit

3, a zero potential is set at the first output of unit 3 and, therefore, at the input of key 5, which, like key 4, is in a non-conducting state, since their control inputs receive level 5

0

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0

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connect the monitored object 6, which is used as a contact device, if the monitored object is a chip, manufactured in a standard package, or a system of probes, if the object to be monitored is a packageless chip. At the same time, on the leading edge of the Start command (Fig 2a) arriving at the first input of the control unit 12, the trigger 20 is set to state 1 and at the same time the impulse Start enters through the OR element 23 to the inputs R of the flip-flops 21 n 22 to the third output of the block 12 control to the second input of the measuring unit 11 and, therefore, to the input R of the counter 17, confirming the zero state of the flip-flops 21 and 22 n of the counter 17. The level O from the inverse output of the trigger 20 goes to the first output of the control unit 12 and through the first input of the forming unit 3 linearly changing voltage on the input R of the counter 15, allowing it to count pulses arriving at its counting input from the output of the generator 14, at the same time level 1 from the single output of the trigger 20 is fed to the input D of the trigger 21, allowing writing to the trigger 21 I, as well as the second the output of the control unit 12 and, subsequently, the control inputs, keys 4 and 5, put them in the conducting state and thus supplying the voltage to the monitored object from the first output of the power supply source 1 and the input signal from the first output of the unit 3 (fig, 2d), which at this moment is equal to to zero. The presence at the input of the controlled object 6 of potential O leads to the appearance of a negative potential at its output, equal in magnitude to the supply voltage (FIG. 2d), which, in turn, triggers the comparator 8 (FIG. 2g) and comparator 9 (Fig. 2e). When the state at the third input of the element AND 10 at this moment is level O, coming from the output of the counter 15 (Fig. 2c) through the second output of block 3, then the output of the element 10 and 10 (Fig. 2i) does not generate a pulse (Fig. 2i, dotted line).

After writing in the high-order counter 15, the unit at the output of the integrator 16 begins to form a linearly varying voltage from zero to E. The change in voltage at the output of the controlled inverter, and consequently, at the output, repeats .transfer characteristic. At the moment when the voltage at the output of the repeater 7 is equal to the voltage poro1

ha of operation of the comparator 9 U (Fig. 2e), the latter is triggered (Fig. 2e), which, in turn, leads to the appearance at the output of the And 10 element of potential 1 (Fig. 2i), which comes through the first input of the measuring unit 11 to the input V of the counter 17, allowing it to count the pulses arriving at its input C from the output of the generator 14 through the third output of unit 3 and the third input of the measuring unit 11. After the voltage at the output of the repeater 7 reaches the threshold of the comparator 8 Urt (Fig. 2e) the latter is triggered and the O level is set at its output (Fig. 2g ), which leads to the appearance at the output of an AND 10 level O (Fig. 2i), which through the first input enters input V of the account th

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17, prohibiting him from counting pulses arriving at input C. Simultaneously, on the falling edge of the output pulse of the element 10, coming through the third input of control unit 12 to input C of trigger 22, the latter is triggered. Trigger 22 indicates that the process of measuring the gain of the monitored inverter has ended. Level 1 from the trigger output 22 (Fig. 2l, solid line) goes through the fourth output to the second input

15 of the display unit 13 and, therefore, to the first input of the element I 26, opening it along this input, and to the inverting input of the element 27, prohibiting the formation of a signal at its output. After the iS counter overflows, the O level appears at the output of its most significant bit (FIG. 2b), as a result of which the integrator 16 begins to form linearly

25, the voltage varies from -E to O and at the same time trigger 2 (fig. 2m) is triggered in control unit 12, AND element 10 is closed at the third input. The high potential from the output of the trigger 21 enters through the OR element 24 .. to the input R of the trigger 20 sets it to its initial state (FIG. 26), and through the fifth output of the control unit 12 to the third input of the display unit 13 and, therefore, to the second the input element And 26 and the second input element And 27f open them on these inputs. Since And 27 is covered by a signal arriving at its inverting input, and And 26 is open through the first and second inputs, the state of indicators 29 and 30 is determined by: a signal from the output of the measuring unit 11 to the first input of the display unit 13 and consequently, the third inverting input element AND 26 and the first input element OR 28, the second input of which receives the level O from the output element AND 27 (Fig. 2o, a solid line). The return of the trigger to the initial state causes the keys 4 and 5, level O, from its single output, arriving at their control inputs, are set to the non-conducting state, disconnecting the monitored object from the output of power supply 1 and the first output of unit 3, and you30

35

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The potential from the inverse output of the trigger 20 is fed to the input R of the counter 15, keeping it in the zero state. The operation cycle of the device ends. In the meter 17 of the measuring unit 11, the number corresponding to the length of the first, inverting, and second inputs of the element And 27 remains recorded, while level 1 is formed at its output (Fig. 2o, dashed line that causes the indicator to light up 30 Marriage. When the Start command re-enters the front, its front is reset.

the input pulse of the element 10, which is inversely proportional to the coefficient Q of the flip-flops 2 (Fig. 2m) and 22 (Fig. 2e)

Enhance controllable inverter.

The measurement result in the form of the number of pulses of the generator 14 from the output of the counter 17 is fed to the first inputs of the comparison circuit 19, the second inputs of which receive the code of the minimum gain value of the monitored inverter. C outputs of the register 18. If the number recorded in the counter 17 is greater than recorded in the register 18, then the output of the comparison circuit 19 appears high immediately after the contents of the counter 17 exceed the value recorded in the register 18 (Fig. 2k), so the level 1 is constantly applied to the input of the comparison circuit 19. Cig Al from the output of the comparison circuit 19 is fed to the input of the display unit 13 and, therefore, to the third inverting input of the AND 26 element (Fig. 2n, solid line), prohibiting the formation of a signal at its output, and to the input of the OR element 28, leading to the indicator 30 Marriage, which indicates that the gain of the controlled inverter is less than the established norm. If the number recorded in the counter 17 is less than the number recorded in the register 18, then the output of the comparison circuit 19 remains the level O of FIG. 2k, dashed line) the indicator 29 turns on. It is valid since the output of element I 26 after triggering of the flip-flops 21 and 22 in the control unit 12 is set to a high level (Fig. 2n, dashed line). If for some reason (for example, due to a malfunction of the inverter being monitored), a pulse is generated at the output of the And 10 element, then the trigger 22 in the control unit 12 does not work, and after the counter 15 overflows in the block 3, the trigger 21 triggers. and 21 through the fourth and fifth outputs of the control unit 12 and the second and third inputs of the display unit 13 are received

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Respectively, the first, inverting, and second inputs of the And 27 element, at the same time the level 1 is formed at its output (Fig. 2o, dashed line that causes the Marriage indicator 30 to light up. When the Start command is received again on its leading edge, the zeroing occurs

Q flip-flops 2 (Fig. 2m) and 22 (Fig. 2e)

five

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five

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five

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five

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in the control unit 12, as well as the counter 17 in the measurement unit 11. At the same time, recording occurs in the trigger 20. In the following, the operation cycle of the device is repeated.

Claims (1)

Invention Formula A device for controlling the gain of the inverters, comprising a first key, a power source, terminals for connecting the input, output and power of the monitored object, and an indication unit, characterized in that, in order to improve device performance and reliability, a second key is inserted into it, voltage, linear voltage generator, repeater, first and second comparators, element I, measuring unit and claiming unit, the first and second outputs of the unit forming the reference voltage The first inputs of the first and second comparators, the second inputs of which are connected to the repeater output, the first output of the linearly varying voltage forming unit, are connected via the first switch to the terminal for connecting the input of the object being monitored, the output terminal the controlled object is connected to the input of the repeater, the output of the first comparator is connected to the first input of the element I, the second inverting input of which is connected to the output of the second comparator, and the third input from the second the output of the ramp voltage generator and the first input of the control unit whose second input is connected to the Start signal terminal, the first output of the control unit connected to the input of the ramp voltage generator, the second output with the control input of the first and second keys, third the output is with the first input of the measuring unit, the fourth output is with the first input of the display unit, the second input of which is connected to the output of the measuring unit, the second input of which is connected to the output of element And and the third input of the control unit, the third input of the measuring unit with the network output of the forming unit of supports voltage, the second input of the first switch is connected to the first output of the power source, the second output of which is connected to the input of the unit for the formation of reference voltages, the output of the first switch is connected to the connection terminal pi It is connected with the third output of the IQ generator and the output of the control unit of a varying voltage, which is connected to the third input of the unit, the second input of which is connected to the standard. and and s OK and to l about the output of the reference voltage generation unit, the second input of the first switch is connected to the first output of the power supply, the second output of which is connected to the input of the reference voltage generation unit, the output of the first switch is connected to the power supply terminal, and t ± g t Fi2