SU815877A1 - Triangular voltage generator - Google Patents

Description

(54) TRENGTH VOLTAGE GENERATOR

The invention relates to a pulsed technique and can be used in a special form of signal generating generators. A triangular voltage generator is known, comprising an integrator, to the input of which are connected the outputs of the switching keys and a trigger, capacitors, a generator of excitation pulses, a frequency divider, a converter, and elements. The disadvantage of the generator is the larger asymmetry of the output pulses. A triangular voltage generator is known that contains a voltage-frequency transducer connected in series, a reversible pulse counter, a code-voltage transducer, and a reverse switch switching unit connected to the control inputs of the reversible pulse counter. A disadvantage of the generator is the ability to form a double-polar switch. , and work in single-phase and multiple counting modes. The purpose of the invention is to expand the functional capabilities of the generator. The goal is achieved by a triangular voltage generator containing a clock pulse generator, a switching unit, a digital-to-analog converter, a reversible counter, a control input and an output of which are connected to the output and input and a switching unit, respectively, and the digital outputs of the digital-to-threshold converter , an elilent I, a shaper of the end of the cycle, a sign generation unit, the sign output of which is connected to the sign input of the digital-to-variable converter, input is entered to the sign output A single counter counter, the counting input of which is connected to the output of the element I, the first input of which is connected to the output of the clock pulse generator, and the second input to the output of the cycpa end, the control input of which is connected to the control output of the reversible counter, and the signal input - to the signal output of the sign formation unit. The drawing shows a structural electrical circuit of the generator. The device contains a generator of 1 clock pulses, element 2 I, the perimeter input of which is connected to the output of the generator of 1 clock pulses, a reversible counter 3, the counting input of which is connected to the output of element 2 AND a D / A converter 4 whose inputs are connected to the discharge outputs of the reversible counter 3 , block 5 of forming the sign, the sign output of which is connected to the sign input of the digital-to-analog converter, and its input - to the sign output of the reversible counter 3, block 6 is switched by the reverse, the input and output of which is under Connected to the control output and input of the reversible counter, respectively, are the cycle termination generator 7, the control input of which is connected to the control output of the reversible counter 3, the signal input to the signal output of the sign generation unit 5, the output to the second input of element 2 I. Device works as follows. The pulses of the generator 1 through the element 2 and arrive at the counting input of the reversible counter 3 and start it. The output voltage of the digital-to-analog converter 4 varies in accordance with a change in the state of the reversing counter 3, the counting direction of which is set with the reverse switching unit 6. Depending on the mode setting, the unit 5 generates a unipolar or two-polar output signal based on the issuance of the sign of the sign of a digital analogue converter 4 by supplying sign information from the reversing counter 3. In the form (the transducer 7, impulses are generated to prohibit the passage of clock pulses through element 2 and at the end of the reproducible signal period when the control signal is received from the reversing counter 3 and the sign of the operation mode from the sign generation unit 5. Thus, the introduction into the ten Eratir ok 5 of the sign form, formed the 7 ends of the cycle and element 2 and allows to form a unipolar, ak and two-polar signal and provide both one-time and repeated repetition of the triangular output signal over the period. The error of signal formation depends on the stability of the clock generator frequency pulses, the volatility of which was obtained 10 - 10, t the number of bits of the reversible counter and the digital-analog converter and its accuracy. A reproduction error of instantaneous voltage of a rectangular form of 0.2–0.1% is obtained in the frequency range of 10 –10 Hz. Invention formula A triangular voltage generator containing a clock generator, a reverse switching unit, an analogue analogue converter, a reverse counter, control The input and output of which are connected to the output and input of the reverse switching unit, respectively, and the digital outputs to the inputs of a digital-to-analog converter, characterized in that, in order to extend the functionality , an element I, a shaper of the end of the cycle, a block of formation of a sign, the sign of which is connected to the sign input of the analog converter, is entered into it, the input is connected to the sign output of the reversible counter, the counting input of which is connected to the output of the element And the first input is connected to the output of the generator clock pulses, and a second input to the output of the end-of-cycle generator, the control input of which is connected to the control output of the field counter, and the signal input to the signal output of the sign maker. Sources of information taken into account during the examination 1. USSR author's certificate No. 632068, cl. H 03 K 4/06, 1978. 2. USSR author's certificate No. 569621, cl. H 03 K 4/06, 1978.

/

N

Bbixoff

-

Claims (1)

Claim A triangular voltage generator, ²⁵ containing a clock pulse generator, a reverse-switching unit, a digital-to-analog converter, a reversible counter, the control input and output of which are connected to the output and 30 input reverse block switching The device operates as follows. The pulses of the generator 1 through the element 2 And go to the counting input of the reverse 35 counter 3 and start it. The output voltage of the digital to analogue of the divider 4 changes in accordance with the change in the state of the reversible counter 3, the counting direction of which sets ”- ₄₀ with the reverse switching unit 6. Depending on the mode specification unit 5 is carried out formation of a unipolar or dvuhpopyarnogo output signal based on the issuance of feature mark tsif- ₄₅ roanapogovou transducer 4 by feeding character information of down counter 3. The shaper 7 pulses are produced to inhibit the passage of clock pulses through AND ₅₀ element 2 at the end of the period of the reproduced signal upon receipt of the control signal from the reverse counter 3 and the sign of the operating mode from the block 5 of the formation of the sign. accordingly, and the bit outputs to the inputs of the digital-to-analog converter, characterized in that, in order to expand the functionality, an element And, a shaper of the end of the cycle, a sign generation unit, the sign output of which is connected to the sign input of the digital-analog converter, and the input to the sign output of the reverse a counter, the counting input of which is connected to the output of the And element, the first input of which is connected to the output of the clock generator, and the second input to the output of the shaper valve stem, a control input of which is connected to the control output of the down counter and the signal input - to the signal output unit for generating mark.