SU1206838A1 - Analog storage - Google Patents

Abstract

The invention relates to the field of automation and instrumentation technology and allows you to increase the speed of an analog storage device. When storing positive voltages, switch 2 should be set to the right position. Then, in the sampling mode when opening the lower transistor in the current switch 10, the output current of the current generator 5 at the initial moment of time consists of the output current of the generator 7 and the current flowing through the diode of the bridge key I from the input source. A capacitor 3 connected through an open diode of a bridge switch I between the collector and the emitter of the output transistor in current generator 6 begins to discharge through this transistor with a pulse current exceeding the output current of generator 6 in the steady state mode p times where p is the current gain of the transistor . At yes § С С Ю Ю о О) 00 00 00

Description

As the stresses at the input and output of the switch 1 are equal, the current through the capacitor 3 drops to zero, and the output current of the generator 6 decreases and becomes equal to the output current of the generator 7. Thus, the charge (discharge); the capacitor of the invention relates to automation and computing and can be used to store selective voltage values of an analog signal.

The aim of the invention is to increase. faster than ip an analog storage device

Pa drawing shows a functional diagonal circuit of an analog storage device.

The device contains a diode bridge key 1, a switch 2, a capacitor 3 (accumulator element); a voltage follower 4, current generators, diodes 8 and 9, and a current switch 10.

The device works as follows.

In the initial state, switch 2, depending on the zeroity of the platoon voltage, should be switched by the operator to the right position with a positive voltage — at the input of the device and to the left position — with a negative voltage. The capacitor 3 is charged up to a voltage at which the potential of the plate, node-key to the output of the key 1, is zero. The output current of the generator 5 is chosen twice as large as the output current of the generators 6 and 7 of the current,

In the sampling mode, the device is switched by supplying paraphase voltage drops to the control inputs of the current switches 10, at which the upper transistor shown in the drawing in the current switch 10 closes and the lower opens.

Suppose that a positive signal input is memorized. At the same time, at the initial moment of time, the current of the generator 5 of the ring device is carried out by a pulsed current, the magnitude of which is r: to be selected several times the greater direct current through the transistor, D while in the known devices the output currents of the current generators are constant. I il.

It is prepared by the output current of the generator 7 and by the current flowing from the input source through the diode of the bridge dongle 1. Diodes 8 and 9 5 in the sampling mode are closed. The capacitor 3 is turned on through the open diode of the bridge key I between the collector and the emitter of the output transistor in the current generator b and

starts to run through this

.transistor with pulse current exceeding the output current of generator 6 in steady state by p times, where p is the transistor gain factor

5 current. When equal voltages are achieved at the input and output of shock I, the current through the capacitor 3 drops to zero and the output current of the generator b decreases to the value corresponding to

0 steady state, i.e. becomes equal to the current output of the current generator 7. In this case, the output current of the generator b, flowed symmetrically through the shoulders of the diode bridge switch

5, is added to the output current of the generator 7 and generates a current of the generator 5. When the negative polarity is closed, the operation of the device is similar to that discussed above, except that the pulsed mode of the output current takes place at the transistor in the current generator 5,

In storage mode, the output current

from the generator. 5 current flows through the upper 1 ranzistor in the switch 10 current, and half of it is the output current of the generator 6 and the other half is the current through the diode 8,

Q Diode 9 is also open in the storage mode — current flows from the generator 7 output through it, while at the first and second output

the current switch 10 is close to + V and -V and the diode bridge switch 1 is closed, and the voltage stored on capacitor 3 is transmitted to the output of the device,

In contrast to the known analog storage devices using a diode bridge switch, the proposed device is characterized by a higher speed, since the charge of a capacitor in it is carried out by a pulse current, the value of which can be selected several times greater than the maximum direct current. As with prior art devices, the current currents of the current generators are constant.

Pho. rmula of invention

An analog storage device containing a diode bridge key, the input of which is the input of the device, a storage element on a capacitor, one plate of which is connected to the output of a diode bridge

Compiled by N, Dikarev Editor G, Volkova Tehred A. Boyko Proofreader A, Obruchar

Order 8721/53 Circulation 544 Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab ,, d, 4/5

Filial PGS Patant, g, Uzhgorod, st. Project, 4

ten

20

25 206838

the first key and the BTOposi limiting elements on the first and second diodes, the anode of the first diode and the cathode of the second diode are connected respectively to the source of negative and positive voltage, the cathode The first diode is connected to the first control input of the diode bridge switch, the output of the first current generator and the first output of the switch. current, the anode of the second diode is connected to the second control of the diode bridge switch, the output of the second current generator and the second output of the current switch, the input of which is connected to the output of the third current generator, characterized in that, in order to increase the speed of the device, A switch is introduced, the input of which is connected to another capacitor plate, the first and second switches of the switch are connected to the control input of the third and first current generators, respectively.

15

Claims (2)

Claim An analog storage device containing a diode bridge key, the input of which is the input of the device, a storage element on the capacitor, one lining of which is connected to the output of the diode bridge 1206838 ^β key and the input of the voltage follower, the output of which is the output of the device, the first and second limiting elements on the first and second diodes, the anode of the first diode and the cathode of the second diode are connected respectively to a source of negative and positive voltage, the cathode of the first diode is connected to the first control unit using the input of the diode bridge key, the output of the first current generator and the first output of the current switch ·, the anode of the second diode is connected to the second control input of the diode 15 bridge key, the output of the second current generator and the second output of the current switch, the input of which is connected to the output of the third current generator, characterized in 2 that, in order to improve the performance of the device, a switch is inserted into it, the input of which is connected to another capacitor plate, the first · and second outputs of the foam connection switch · 25 with the control input of the third and first current generators, respectively