SU1005081A1 - Multiplication-division device - Google Patents

Description

(54) PERSONALIZED DEVICE

The invention relates to analog computing, is intended to multiply and divide slowly varying analog signals and can be used in analog computing devices.

A device for multiplying and dividing slow-moving signals, built on the principle of time-to-pulse conversion, contains an analog-time interval converter (AVI |, a control unit and a multiplication circuit made on the integrator jt latch 1. However, the presence of a reference voltage source in the device and a third comparator (for dividing each multiply-dividing step into three time intervals — charge, integration, and transfer) complicates the device and reduces its accuracy.

It is also known a device for multiplying and dividing signals, containing an analog-time integral integral converter, the first input of which is the input of the first factor of the device, and the second input - the input of the device divider, trigger, two NAND units, the first integrator containing the operational amplifier.

input charging switch and reset switch included in the feedback circuit of the operational amplifier of the first integrator, and the second integrator containing the operational amplifier and input charging switch, the analog-time interval of the converter is connected to the trigger input and to the first input of the first element And -NOT

10 whose other input is connected to the non-inverting output of the trigger, the output of the first element NAND is connected to one input of the second element NAND, to the non-inverting output of the trigger,

15, the output of the second element is NOT connected to the control input of the reset key of the first integrator, the input of the first integrator is the input of the second factor of the device, the output of the second

20, the integrator is output from device 2.

However, to multiply slowly varying the number of signals, this device is complicated and, moreover, the need to ensure that the integrator parameters of the circuit are identical, cleverly, Kenya makes it difficult to set up the device.

The purpose of the invention is to simplify the multiplexing device.

This goal is achieved by the fact that, in a known multiplying device, the inverting trigger input is connected to the control input of the input charge switch of the second integrator, and the output of the first integrator is connected to the input of the second.

The drawing shows a structural diagram of a multiplying-dividing device.

The multiplier-deductive device contains an analog-time interval converter 1, trigger 2, the first and second elements AND-HE 3 and 4, the first integrator 5 and the second integrator 6.

The analog-time interval converter contains the key 7, the first comparator 8, the second comparator 9, the integrator 10, performed on the operational amplifier 11, in feedback of which the integrating capacitor 12 is turned on.

The first integrator contains an operational amplifier 13, an input scale resistor 14, an integrating capacitor 25, a reset switch 16 included in the feedback of the operational amplifier 13, and an input charging switch 17.

The second integrator includes an operational amplifier 18, an input scale resistor 19, an input charge switch 20, an integrating capacitor 21, and a feedback resistor 22.

The multiplying-dividing device operates as follows.

When analogous voltages X and 2 are applied to the key 7 and the first comparator 9 of the converter 1, at the input of the second comparator 8 of the converter 1, rectangular pulses with equal scaling, whose period is equal to T - X / Z, are formed. In a time equal to two periods, one step of the multiply-divide operation is performed. The positive pulse of the first period is unlocked by the input charge switch 17 of the integrator 5, at the output of which a voltage proportional to (X / 7.) Y is formed. For the time of the negative pulse of the first period and the positive pulse of the second period, the input charge switch 20 of the second integrator b is unlocked, and the voltage level from the output of integrator 5 is transferred to integrator 6. The negative key of the second period is unlocked by the reset key 16 and. integrator 5 is discharged. Thereafter, the process is repeated cyclically. The keys 16, 17 and 20 are controlled by the elements AND-HE 3 and 4 and the trigger 2, respectively. The use of the proposed device makes it possible to simplify the construction of the MRLs in the integral design.

Oormula izbreveni

A multiplying-dividing device containing a converter An analogue time interval, the first input of which is the input of the first device multiplier, and the second input is the input of the device divider, trigger, two NAND devices, the first integrator containing the operational amplifier, input charging key and reset, included in the feedback circuit of the operational amplifier | l of the first integrator and the second integrator torus, containing the operational amplifier and input charge switch, the output of the analog-time interval converter The key is connected to the trigger input and to one input of the first NAND element, the other input of which is connected to the inverting output of the trigger, the output of the first AND NAND element is connected to one input of the second NAND element and to the control input of the input charging key of the first the integrator, the other input of the second element is NOT connected to the inverting input of the trigger, the output of the second element is NOT connected to the control input of the reset key of the first integrator, the input of the first integrator is the input of the second factor of the device, the output of the second int gratora is the output device, characterized in that, in order to simplify the apparatus, an inverting trigger input connected to the control input of the input-stand zyr key of the second integrator and the output of the first integrator is connected to an input of the second.

Sources of information taken into account in the examination

1, Japan’s Application No. 48-1B669, cl. 971.8), B 12, published. 1973.

2. USSR author's certificate W 554540, cl. G About G 7/161, 1977 (prototype).

Claims (1)

Claim A multiplier dividing device containing a time-lapse converter, the first input of which is the input of the first device factor, and the second input is the input of the device divider, trigger, two NAND elements, the first integrator containing an operational amplifier, an input charging key and a key reset, included in the feedback loop of the operational amplifier 25 | A of the first integrator and the second integrator / torus containing the operational amplifier, and an input charging key, the output of the analog-time converter al is connected to the input of the trigger and to one input of the first AND-NOT element, the other input of which is connected to the inverting output of the trigger, the output of the first AND-NOT element is connected to one input of the second AND-NOT element and to the control input of the input key of the first integrator, another the input of the second AND-NOT element is connected to the inverting input of the trigger, the output of the second AND-NOT element is connected to the control input of the reset key of the first integrator, the input of the first integrator is the input of the second device factor, the output of the second The actuator is the output of the device, characterized in that, in order to simplify the device, the inverting input of the trigger is connected to the control input of the input charging key of the second integrator, and the output of the first integrator is connected to the input of the second.