SU1203495A1 - Stabilized electric power supply system - Google Patents

Abstract

The invention allows the functionality to be extended by forming a predetermined sequence of switching on and off the power sources. The system contains a decoder 1, elements OR 2-1, 2-2, 2-3, triggers 3-1, 3-2, 3-3 ,. the outputs of which are connected to the corresponding control input of sources 4-1, 4-2, 4-3 of the power supply, blocks 6-1, 6-2, 6-3 of the control, the outputs of which are connected to the corresponding inputs of the state decoder If, when the system is in In the operating mode, a malfunction occurs in the secondary circuit of one of the sources, then the control unit generates a logic zero signal, the state at the input of the decoder changes, and at the output, a signal is generated, which through the logic elements OR sets the output state of the triggers to zero.rivodit to switch off all power supplies. 1 il. i (L

Description

 The invention relates to electrical engineering and can be used in the sources of secondary power supply (IHEP) electronic equipment,

The purpose of the invention is to expand the functionality by forming a predetermined sequence of switching on and off of the power supply unit.

The need for a certain sequence of switching on and off of power supplies arises, for example, when using large integrated circuits.

The drawing shows a diagram of a stabilized power supply system.

The system contains 1 state decoder, the first input of which is connected to the source of the command signal, and the outputs - to the inputs of the OR elements 2-1 - 2-3 and S - RS inputs - flip-flops 3-1 - 3-3. The output of each element OR is connected to the R-input of the corresponding trigger, the output of which is connected to the corresponding control input of the IVP 4-1 -, the inputs of which are connected to the terminals 5 of the primary network and the outputs to the output pins, and blocks are included in the output circuit of each IVP 6-1 - 6-3 control, the outputs of which are connected to the corresponding inputs

condition decoder. I

The device works as follows.

In the absence of a command to turn on the power supply unit, the signal of a logical unit from the output A of the decoder 1 states is sent to the first inputs of the OR elements, from the outputs of which arrive at the R inputs of the corresponding RS-flip-flops. The triggers are reset to the initial state, in which the control signals at the inputs of the PIER - 4-3 are absent and the sources are disconnected.

When a command is received at the first input of the decoder 1 to turn on the power supply voltage signal A is removed, and from the output of & the logical unit enters the S input of the RS trigger and sets at its output the level of the logical unit that turns on the source 4-1. After a nominal voltage level is established at its output terminals, the control unit 6-1 forms the level of logic 034952

This unit arrives at the second input of the decoder 1. In this case, the signal B is removed, and the signal Q sets the level of the logical unit at the output of the second trigger 3-2, which includes the source 4-2. After the nominal voltage level is established at its output, the corresponding control unit 6-2

10 forms the level of the logical unit, which goes to the third input of the decoder. From the output of the decoder 1, the signal of the logical unit enumerates the trigger 3–3 and turns on the third

15 source 4-3.

After the signal is removed to turn on the power supply system, the signal H of the state decoder goes to the element OR 2-3, from the output of which

20 is applied to the R input of the trigger 3-3 and sets it to the zero state. At the same time, the source 4-3 is turned off, the block 6-3 of the control after the fall of the output napr;

25 below a certain level forms a logical zero signal, which causes a corresponding change in the state of the decoder 1, the formation of a signal; Nal E causes the source 4-2 to turn off. Similarly, the source 4-1 is disconnected according to the corresponding chains.

If, when the system is in operation (all.

rated load) occurs

a malfunction in the secondary circuit of source 4-1, then the 6-G control unit generates a logic zero signal, the state at the input of the decoder changes, and the output generates a signal G, which through the logic elements OR sets the that leads to the simultaneous shutdown of all the power supplies 4-1 - 4-3.

Claims (1)

Invention Formula A stabilized power supply system comprising a group of secondary power supply sources equipped with control inputs, the power inputs of which are connected to the terminals. to connect the mains and the outputs - with leads for connecting 55 consumers connected to the inputs of the corresponding output voltage control units, elements OR by the number of secondary sources 3 12034954 the power supply and the source of the command control of the output voltage, the perception signal, which is different from the output of the decoder is connected to the fact that, in order to expand it with the function-first inputs of the OR elements, the second national possibilities by way of form-output - with the second inputs of the element of a given sequence5 OR, the outputs of the first group of outputs enabling and disabling the source of the decoder connected to the third in the power, it introduced the RS-triggers of the corresponding elements OR, by the number of power sources and outputs of the second group of outputs is a decoder, and the first input of the decoder is with S-inputs corresponding to A rator is connected to a source of trigger commands, the R inputs of which of the connected signal are each successively connected to the outputs of the respective input sources with the output of one of the blocks. secondary power supply. Compiled by V. Shirokov Editor V. Petrash Tehred I, Astalosh Corrector V. Butt ha Order 8415/50 Circulation 862 Subscription VNISh State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Branch ShSh Patent, Uzhgorod, Proektna St., 4