8 Maintenance of report

A report on the done work must contain following.

8.1 Fundamental electric, functional, structural charts of the monophase and three-phase guided and out of control rectifiers.

8.2 Results of researches in accordance with пп. of 6.1.6.4:

• tables with the results of measuring and calculations;

• oscillograms of currents and tensions in elements and chains of chart of the guided rectifier at loading of active and inductive character;

• charts of external and regulation descriptions :

U_н, r_в, S₂, K₂ = f(I_н);

U_н, U_н / U_{н max} , U₀ / U_{0 max} = f( ),

, K_пв, K_пвU, K_н, K_нU, S_i, S_U = f (I_н, L1).

8.3 Conclusions and comparative estimation of the got results.

Module 2

2 Devices And system of power supply And power supply of telecommunication systems Laboratory work № 2.1 Research of transformer of permanent tension self-excited

1 Purpose of work

Study of charts and principle of action of transistor transformers of permanent tension. Research of their descriptions and indexes of quality.

2 Literature

2.1 Электропитание устройств связи: Учебник для вузов / А.А. Бокуняев, В.М. Бушуев, А.С. Жерненко, А.Ф. Кадацкий и др; Под ред. Ю.Д. Козляева. – М.: Радио и связь, 1998. – C. 163–197.

2.2 Доморацкий О.А., Жерненко А.С. и др.; Электропитание устройств связи. – М.: Радио и связь, 1981. – С. 139–170.

2.3 Иванов-Цыганов И.А. Электропреобразовательные устройства РЭС.: Учебник для вузов. – 4-е изд., перераб. и доп. –М.: Высшая школа, 1991. – С. 208–260.

2.4 Источники питания радиоэлектронной аппаратуры: Справочник / Г.С. Найвельт и др; Под ред. Г.С. Найвельта. – М.: Радио и связь, 1986. С. 350 – 371.

2.5 Китаев В.Е., Бокуняев А.А. и др.; Электропитание устройств. – М.: Связь, 1975. – § 9.1, 9.2, 9.3.

3 Description of laboratory model

Presented on a fig. 3.1 a laboratory model is intended for research of transistor transformer of permanent tension.

There is only one investigated chart (fig. 3.1) in a model. Her short description is driven to the table. 3.1.

Table 3.1 is Description of the investigated chart
№ п/п	Denotation is in a model	Description	№ fig.
1	Transformer	Transistor transformer of permanent tension (chart of Royer)	3.2

Picture 3.1 is the Laboratory model

Picture 3.2 is the Investigated chart

A laboratory model contains:

• source-generator of G1 of permanent tension of UG1;

• four variants of the k (k = 1, 2, 3, 4) loading of transformer : without the smoothed filter is active character of loading (k = 1), individual filter (k = 2), by a capacity filter (k = 3) and L-type LC -фильтр (k = 4);

• transistor negator, containing the elements of VT1, VT2, VD1, VD2, R1, R2, SW1, SW2, C1, TV1;

• bridge rectifier, containing the elements of VD3.VD6;

• smoothed filter, formed by the elements of L1 and С2;

• resistance of Rн of loading of transformer (with possibility of his disconnecting and connecting the switch of SW1);

• quadriradiate oscillograph;

• voltmeter of PV1 of tension of Uп on the output of source of G1

• voltmeter of PV2 of output tension of Uн of transformer

• ammeter of PA1 of current of Iп, consumed from the source of feed of G1;

• ammeter of PA2 of current of Iн of loading of transformer.

A laboratory model consists of source of primary power supply of G1, transformer of permanent tension in variable - negator (R1, R2, C1, VT1, VT2, VD1, VD2, TV1), rectifying block of VD3.VD6, smoothed filter of L1, C2 and resistances of loading of Rн. Resistance of loading of Rн becomes disconnected by means of switch of SW3. By means of switches of SW1, SW2 can be set four variants of the k (k = 1, 2, 3, 4) loading of transformer :

• work on the active loading (k = 1: SW1 is included - transferred in the reserved conducting state, SW2 is turned off - transferred in the broken a secret non-conducting state);

• work on the inductive loading (k = 2: SW1 is turned off, SW2 is turned off);

• work on the capacity loading (k = 3: SW1 is included, SW2 is included);

• work on the L-type filter (k = 4: SW1 is turned off, SW2 is included).

The list of model elements is presented in a table. 3.2. On the panel of оператив-ных regulations resistance of resistor of loading of Rн is shown out.

A fourchannel oscillograph, allowing to look after the form of tensions and currents in the different points of chart, enters in the set of control and measuring devices also.

Table 3.2 is Composition of laboratory model
№ poses.	Type of element	Managed parameters				Note
		parameter	min	макс.	ед. изм.
G1	Source of permanent tension
С1	Condenser
С2	Condenser
VT1	BPT					n - p - n
VT2	BPT					n - p - n
ТV1	Transformer
VD1	Diode
VD2	Diode
VD3	Diode
VD4	Diode
VD5	Diode
VD6	Diode
L1	Throttle
R1	Resistor
R2	Resistor
Rн	Resistor	Сопротив.	1	100	Ohm	Operative regulation
SW1	Switch	State	off	on		Switch of throttle of L1
SW2	Switch	State	off	on		Switch of condenser of С2
SW3	Switch	State	off	on		Load-break
PV1	Voltmeter					Mean value
PV2	Voltmeter					Mean value
PA1	Ammeter					Mean value
PA2	Ammeter					Mean value

Synchronization of oscillograph takes place automatically in accordance with work of chart. Duration of involute is 0,001.2000 мс/cage. The list of control points of oscillograph is driven to the table. 3.3. Internal memory of oscillograph is enough for maintenance of the last period of design.