RU196739U1 - UNIVERSAL LABORATORY UNIT FOR REPAIR, SETTING AND DIAGNOSTICS OF ELECTRONIC EQUIPMENT - Google Patents

Abstract

The utility model relates to structures in radio engineering, used in particular for repair, tuning and diagnostics of electronic equipment. The purpose of the utility model is to create a device that combines three modules in one housing for repair, tuning and diagnostics of electronic equipment. A universal laboratory unit for repair, adjustment and Diagnostics of electronic equipment consists of a housing in which three modules are mounted: a protected, galvanically isolated AC source with a voltage of 220 V; laboratory power supply with an adjustable output constant voltage of 1-30 V, constant voltage of 5 V; and an audio frequency generator "Meander 1 kHz" with an adjustable output voltage of the signal. The modules have a common power supply circuit. Indication - LED and digital voltmeter-ammeter. Contact connectors are provided for connecting electronic equipment. Repair, adjustment, diagnostics of electronic equipment is carried out by connecting it either to one module, or, if necessary, simultaneously to two or three modules of the unit. 2 ill.

Description

The utility model relates to structures in radio engineering, used in particular in the repair, adjustment and diagnostics of electronic equipment.

Any electronic equipment is powered by any power source. This is either an industrial 220 V AC network, or autonomous direct current sources - batteries or accumulators. In addition, as part of a large number of electronic equipment, there are audio paths, for example, all kinds of audio frequency amplifiers, communication equipment, etc. When repairing, adjusting, diagnosing such equipment, a laboratory power supply unit with adjustable output voltage and a protected, galvanically isolated AC voltage source of 220 V are required. To repair equipment with audio paths, an additional audio frequency generator is required, for example, a 1 kHz meander signal with an adjustable output voltage. Therefore, when repairing, adjusting, diagnosing electronic equipment, several different devices and power supplies must be used simultaneously. there is no block that combines all the necessary functions.

A known factory-made power source that allows you to connect repaired equipment [1]. The disadvantage of this unit is that it incorporates only a constant voltage source.

A known factory-made signal generator, which allows to obtain signals of various shapes and amplitudes [2]. The disadvantage of this unit is that it includes only a signal generator.

A known factory-made galvanic isolation unit, which allows connecting electronic equipment to a 220 V network [3]. The disadvantage of this unit is that it includes only a galvanic isolation unit.

The objective of the utility model is to create a device that combines three modules in one housing for repair, configuration and diagnostics of electronic equipment.

The technical result is an increase in the repair efficiency of electronic equipment.

An electrical schematic diagram of a universal laboratory unit for repair, tuning and diagnostics of electronic equipment is shown in FIG. 1. Three modules are mounted in one housing 1: module 4 - a protected, galvanically isolated AC voltage source 220 V, module 5 - a laboratory power supply unit with adjustable output constant voltage 1-30 V, constant voltage 5 V, and module 23 - sound generator frequency "Meander 1 kHz" with adjustable output voltage of the signal. The modules have a common power supply circuit 6, protected by a circuit breaker 3, the voltage to which is supplied through contacts 2, the indication is LED 20 and a digital voltmeter-ammeter 27. For connecting electronic equipment, connectors 29, 30, 31 and 32 are provided.

To repair, configure and diagnose electronic equipment powered by a 220 V network, it is necessary to connect it to the terminals 29 and turn on the toggle switch 7. At the same time, LED 20 lights up, indicating 220 V voltage supply, connected via board 17. The device under test is connected via a transformer 9, providing galvanic isolation from the industrial network 220 V. If there is a malfunction in the device under test - a short circuit, then the protection will work - circuit breaker 3.

For repair, adjustment and diagnostics of electronic equipment powered from a constant voltage of 1 to 30 V, it must be connected to the connectors 30 and turn on the toggle switch 8. The alternating voltage 220 V, passing through the transformer 10, is reduced to the required values, rectified by diode bridges 11 12 and 13 and is smoothed by filtering capacitors 14, 15 and 16. The output voltage can be set by the regulator 24. The output voltage and current consumption on the device 27 are displayed. In addition, there is a stabilized source supply voltage 5 V - board 19, the output connectors 31. Additional filtering is performed by capacitors 21 and 22. The same current consumption as the device is indicated by 27. boards regulators-stabilizers 18 and 19 has a built-in protection against short-circuits.

If you need to repair or test the audio path as part of electronic equipment, you must connect the input of this device to the pin connectors 32, turn on the toggle switch 25 and set the regulator 28 to the required signal level of the “1 kHz meander” generator, which is generated on the board 26. Monitoring the signal passage through the audio path of the equipment is usually carried out by an oscilloscope (separate device) or standard speakers (in case of checking the audio amplifier)

In FIG. 2 shows the front panel of a universal laboratory unit for repair, tuning and diagnostics of electronic equipment. It contains all the controls, displays and contact connectors.

Sources of information:

1. Power source AKIP-1102 810 [Electronic resource]. URL: https://prist.ru/catalog/istochniki_pitaniya/akip_1102/ (accessed: 10/22/2018).

2. Low-frequency signal generator GAG-810 [Electronic resource]. URL: http://pribory-spb.ru/pribor_GAG-810-generator-NCh (accessed: 10/22/2018).

3. TEPLOCOM - GF galvanic isolation [Electronic resource]. URL: http://5000wt.ru/other/setevaya_zashita/model/teplocom_-_gf_galvanicheskaya_razvyazka/ (accessed: 10/22/2018).

Claims (1)

A universal laboratory unit for repair, tuning and diagnostics of electronic equipment, combining three modules in one housing for repair, tuning and diagnostics of electronic equipment and having a common power supply circuit, characterized in that it contains a protected, galvanically isolated AC voltage source of 220 V, and a laboratory block The power supply has an adjustable output constant voltage in the range from 1 to 30 V.

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