SU851751A1 - Staircase voltage generator - Google Patents

Description

54) STRAINED VOLTAGE GENERATOR

The invention relates to a pulse technique and can be used in devices for scanning automatics and high-speed technology. A step-voltage generator containing a cumulative condensator of a transistor, ova .angfla, aa capacitor, and resistors 11 is known. A disadvantage of the device is the low precision of operation. The closest technical solutions. By the present invention, & a step voltage generator containing a single-vibration, the first input of which is connected to the inverter. The outputs are connected to the control input of the key, the analog input of which is connected to the bus of the reference voltage, the output to the first input of the integrator. The low accuracy of the device is connected to the device. The purpose of the invention is the accuracy of the device operation. The goal is achieved by the fact that a step voltage generator containing a one-shot, the first input of which is connected to the clock bus, and an output to the control input of the key, the analog input of which is connected to the reference voltage bus, and the output to the first input of the integrator, bl (control, reversible counter, comparator, the first input of which is connected to the voltage bus), the second input to the output of the integrator, the output to the input of the reversing counter and the first input of the control unit, the second input of which connecting the clock bus, the third input to the startup bus, the fourth input to the bus. the code for the number of steps, the periw output to the second input of the integrator, the second output to the input counter of the reversible counter, the outputs of which are connected respectively to the second inputs of the one oscillator. device block diagram. The device contains a control unit 1, a comparator 2, a counter 3 reversing, a key 4, an integrator 5, an innovator 6j bus 7 clock pulses, a bus 8 code of spam esp, a bus 9 start, a bus lO of the reference voltage, The control unit I controls the electronic control unit AND 11, the frequency divider 12, the element OR 13, the trigger 14, the device works in the following way. In the initial state of trigger 14, the control unit 1 provides the closed state of the integrator key 5, and the output voltage the output of the device is determined by the zero potential of the non-inverted input of the operational amplifier of the integrator 5. The key 4 is open, and the element 11 from the trigger 14 is given a prohibitory signal. The trigger pulse on bus 9 switches on the trichter 14, a signal is released at its output that opens the key of the integrator 5 and opens element 11 of the sync pulse from bus 7. The formation of the output voltage step begins with the appearance of the first clock pulse on bus 7. This pulse at the output of the one-shot b appears the signal that closes the key 4. the reference voltage is connected to the input of the integrator 5. At the same time, the integrator 5 begins to form the output voltage. When the output pulse of the one-shot 6 ends, the key 4 opens and the integrator 5 turns into a voltage storage node. Thus, after the first clock pulse at the output of the device, a voltage step is formed from the step. The next sync pulse, similarly to the one recorded, forms the second step of the output voltage, and the subsequent sequence of sleep pulses is stepwise decreasing the voltage. This process continues until the number of steps reaches the desired K value. The output pulse of the frequency divider 12 corresponding to the K-th step sets the trigger 14 through the OR element 13 to the state in which the AND 11 element closes and the integrator 5 CLKP closes discharging the integrator capacitor. At this pick-up, the output voltage shaping ends with, and the circuit of the device is reset. At the same time, the output pulse of the healer 12, entering the summing input of the counter 3, increases in it the number N stored by the reversible counter in it. This accordingly increases the value of the single-oscillator 6 TO and the amplitude of the output voltage step in the next cycle of output voltage formation. Such an increase in the amplitude of the step from cycle to cycle will continue until the output voltage of the device reaches the level of the reference voltage before the occurrence of the K-th clock pulse in the ochean cycle. In this case, the comparator 2 is triggered, the signal from its output through the element OR 13 switches the trigger 14, i.e. the device circuit is reset. At the same time, this pulse arriving at the subtracting input of counter 3 reduces by one the number N, which leads to a corresponding decrease in the amplitude of the step in the next cycle. Thereafter, the number N set in counter 3 changes from cycle to cycle by one. the lower bit, and the upper limit of the output voltage varies within DO - J and Thus, the proposed step voltage generator automatically adjusts the voltage amplitude of the step. Claims of the invention A step voltage generator containing a single vibrator, the first input of which is connected to the clock bus, and the output to the control input of a pda. cha, the analog input of which is connected to the voltage reference bus, and the output to the first input of the integrator, is used to improve the accuracy of operation. it is entered into the control box, p "" "| k; kshy counter, ommparator, the first input of which is connected to the bus of reference support and TROY input - to the integrator output, output of the reversing account subtraction input and the first input of the control unit, whose second input connected to the sync pulse bus, the third input to the start bus, the fourth input to the bus number, the first output to the second integrator input, the second output to the summable, reversible counter input, you .5851751

whose moves are connected by the corresponding-1. USSR author's certificate

but to the second entrances of anovibrator.№ 376884, to l. H 03 K 4/02, 1969.

Sources of information, 2. Electroj, 1972, N 25,

taken into account when examining cJ II

Claims (1)

Claim A step voltage generator containing a one-shot, the first input of which is connected to the clock bus, and the output to the control input of the key, the analog input of which is connected to the reference voltage bus, and the output to the first input of the integrator, characterized in that in order to increase the accuracy of operation. " a control unit, a reversible counter, a comparator, the first input of which is connected to the reference voltage bus, the second input to the integrator output, and the output to the subtracting input of the reverse counter and the first input of the control unit, the second input of which is connected to the sync bus, are introduced third input - to a tire run, the fourth input - to a bus number of steps, the first output - to the second row vho- _t integrator, the second output-to summing. the input of the reversible counter, the probes of which are connected respectively to the second inputs of the one-shot.