SU1464741A1 - Laser power source - Google Patents

Abstract

The invention relates to electrical engineering, in particular to sources of secondary power supply for quantum electronics products. The purpose of the invention is to increase the reliability of work. The source power circuit consists of regulating element 2 of voltage regulator 1, parallel-connected shunt resistor 7 and regulating element 6 of current regulator 5, as well as current sensor 8. The control channel of the voltage regulator 1 is made on the base. comparing operational amplifier 3. The control channel of current regulator 5, in addition to comparing operational amplifier 9, also includes integrating operational amplifiers 10,11. The operational reliability of the source is increased due to the disconnection of the regulator element 6 when the device is put into operation. In this case, the discharge current of the active element .23 of the radiator is carried out through the shunt resistor 7. The control of the element 1 is switched on while the current of the active element passes through the Q element 23. The boundary values of the tolerance control voltages of the control element 6 are determined modes of integrating operational amplifiers 10,11,1 Il. (L with

Description

wiring an op-amp to up to a maximum of 15 mode, the discharge current will be onjje

piece Inverter voltage. The input input of the OA 11 exceeds the reference voltage + Mo „y and causes a decrease in the voltage at the output of the OU 11 to the maximum negative.

The integration time of the OU 10 and OU 11 is chosen so that the rate of increase of the positive voltage on the code of the OU 10 does not exceed the rate of increase of the negative voltage at the output of the OU 11. This leads to the fact that the voltage on the Zener diode 12 at the end of the integration interval will have a slight positive voltage that yet. after divider 15, it is lower than the voltage on the sensor 8 of the current caused by the flow of discharge current through the latter. At the output of the op-amp 9, a negative voltage is still maintained and, as a result, the regulating element 6 is in the locked state,

The voltage generated by the discharge current on the shunt resistor 7 affects the control channel of the voltage regulator 2 and causes its output voltage to decrease to the optimum value for the regulating element 6.

The establishment of an optimal voltage on the regulating element 6 leads to the fact that the reference voltage at the non-inverting input of the shelter 11 is higher than at its inverting input and the output voltage of the shelter 14 rises to the maximum positive, In this mode, at the outputs of the shelter 10 and OA 11 is supported. Positive voltages incorporate a parametric stabilizer, formed by summing resistors 12,13 and zener diode 12. Stable positive voltage from the output

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The value of the resistance of the sensor B in the current and the voltage (divisor factor) of the divider is 15. Thus, the active activation of the regulating divider 6 is allowed after the completion of transient processes associated with the development of the discharge and the time for setting the voltage at the output of the regulator torus 1 5 voltage, which eliminates the overload of the regulating element 6 of the regulator 5 current on Power, This allows. improve the reliability of the power source.

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Claims (1)

 Invention Formula A laser power supply containing a voltage regulator with a first regulating element connected between the first terminals for connecting a primary power source and an active: radiator element, the first comparing operational amplifier, the connected reference input — to the output of the first voltage source, and the output to the control input of the first regulating element, the first voltage divider, connected input between the output of the first regulating element and the second output for connecting the primary power source and a connected output to the signal input of the first equalizing operational amplifier, current regulator with a current sensor and the second regulating element connected in series between the second endpoints for connecting the primary power source and the active element of the radiator, the second comparing operational amplifier, connected by a signal input to the output of the current sensor, and the output to the y the control input of the second regulating element, and the second source of voltage, the separation diode connected between the second output for noAiOTKWfieHHH active element of the radiator and the output potential of the output VODOM1 of the first voltage divider, characterized in that the current torus is introduced by a shunt resistor, two integrating operational amplifiers, two summing resistors, a third reference voltage source, a zener diode and a second voltage divider, the shunt p The resistor is connected parallel to the second control element, the non-inverting inputs of the first and second integrating operational amplifiers are connected to the outputs of the current sensor and the second reference source respectively, the inverting input of the first integrating operational amplifier is connected to the output of the third reference source voltage, and the potential output of the inverting input of the second integrating operational amplifier - with the second output for connecting the active element of the radiator, the reference the zener diode and the second voltage divider are connected in parallel and connected through summing resistors to the inputs of both integrating operational amplifiers, and the reference input the second comparing operational amplifier is connected to the output of the second voltage divider, while the summing resistor in the output circuit of the first integrating operational amplifier is chosen with less resistance than the summing resistor in the output circuit of the second integrating operational amplifier | tel.