RU1798899C - Device for recording minimal overloading - Google Patents

Description

measures, MOS structures. Consumption in static mode 1 μA.

Fig. 2 is an electrical diagram of a commercially available microchip K561 LP2, which can be used as a threshold element. The voltage of the power supply Whip is possible from +3 to + 15 V.

Figure 2 is an electrical diagram of a commercially available KTZ KTZ chip, which can be used as a threshold element. The voltage of the power source 1) Units are also in the range +3 + +15 V.

Fig. 4 shows the characteristic of the dependence of the output voltage 1) of the output on the input voltage UBX at a load resistance RH of 10 kΩ for the KTZ chip K561. An abrupt change in Kvych occurs in the UBx region in the voltage range 2.70–2.72 V, i.e. on a plot of 20 mV.

Figure 5 shows the characteristic of the dependence of the output voltage Ubx of the input voltage UBx at a load resistance RH of 10 kΩ for the K561 LP2 microcircuit. A sudden change in the output occurs in the input voltage range of 2.06-2.08 V, i.e. . to a plot of 20 mV.

The registrar works as follows.

The constant bias voltage Uc.n, enters through the diode 1 at the input of the threshold element 5 and biases its operating point. For example, if we take the KTZ chip 561 as a threshold element, then Uc.n. + 2.60 V, and for the K561 LP2 Uc.n. +2.05 V. i.e. the operating point approaches the interval of input voltages at which the output voltage changes stepwise (Figs. 4, 5). The voltage from the source of the input signal 2, for example, an acceleration sensor that converts a physical quantity (acceleration) into an electrical signal, passes through a filter 3 and through a capacitor 4, which passes only the variable component of the signal, to the input of the threshold element 5. where it is added to Uc.n . Upon reaching the voltage amplitude from the input source of 30-40 mV at the output

of the threshold element 5, the voltage changes abruptly and takes, for example, a value of 4.7 V, corresponding to a logical unit, which is the enable permission, for example,

measuring system. At the same time, this voltage can be used as a supply voltage for the subsequent circuit, which will be included only for the duration of the input action.

thus the inventive registrar by introducing a filter and a threshold element with appropriate connections, compared with the device adopted for the prototype, allows you to shift the operating point of the threshold

cell to the input voltage range at which the output voltage changes stepwise. The bias voltage is added to the input control voltage and is thereby provided

the possibility of applying the control voltage from a micropower source of small amplitude, which increases the sensitivity of the device and ensures low consumption from the power source. The presence of a filter allows filtering the input signal, which extends the dynamic range of the device. By increasing the sensitivity, the efficiency of the recorder is increased.

 Formula of the invention A minimum overload recorder comprising a capacitor, a diode, an input signal source, characterized in that

that, in order to increase work efficiency by increasing sensitivity, it is additionally equipped with a filter with a threshold element, the output of which is the output of the recorder, and the input is connected

through a diode with a constant bias source and through a capacitor - with the output of the filter, the input of which is connected to the input signal source.

FIG.

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FIG. 2

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4.70

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12

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