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Overview

Stabilizer input - "IN"; output - "OUT"; general - "GND" (Ground).

• The control input of an adjustable stabilizer is referred to as "ADJ" (Adjust).

• To the input (Input), as well as to the output (Output) of the stabilizer (directly at the corresponding output or near it), in order to avoid self-excitation, it is necessary to connect a capacitor with a capacitance of 47...220 nF.

• If the capacitance of the capacitor at the output of the stabilizer is very large, and the load current is small, a diode must be connected between the input and output. This solution ensures that the output voltage will very quickly decrease to the value of the input voltage.

• For reliable operation of the stabilizer, the input voltage is selected at least 3 V higher than the output voltage.

• Regulators of the "low-drop" series (with a small voltage drop between the input and output), which are not considered here, must have an input voltage that exceeds the output voltage by 0,1 ... 0,5 V for reliable stabilization.

Positive DC voltage stabilizers, maximum output current - 100 mA, housing - TO-92 (Fig. 1)

A type	Input voltage, V		Output voltage,AT.
	Min	Mach
78L05 steel construction	7.2	30	5
78L06 steel construction	8,2	30	б
78L08 steel construction	10,2	30	в
78L09 steel construction	11.2	30	9
78L12 steel construction	14,2	30	12
78L15 steel construction	17,2	30	15
78L18 steel construction	20,2	30	18
78L24 steel construction	26,2	30	24

The prefix depends on the manufacturer - LM 78 Lxx ACZ; MC 78 Lxx CP; uA 78 Lxx AWC; ML 78 Lxx A.

Fig. 1

Positive DC voltage stabilizers, maximum output current - 500 mA, housing - TO-220 (Fig. 3) or TO-39 (Fig. 6)

A type	Input voltage, V		Weekendvoltage, V
	Min	Mach
78М05	7,5	35	5
78М06	8,5	35	6
78М08	10,5	35	8
78М12	14,5	35	12
78М15	17,5	35	15
78М20	22,5	40	20
78М24	26,5	40	24

Ris.2

Ris.3

Ris.4

Stabilizers of constant negative voltage with a maximum output current of 100 mA in the TO-92 package (Fig. 2)

A type	Input voltage, V		Weekendvoltage, V
	Min	Mach
79L05 steel construction	-7,2	-30	-5
79L06 steel construction	-8,2	-30	-6
79L08 steel construction	-10,2	-30	-8
79L09 steel construction	-11.2	-30	-9
79L12 steel construction	-14,2	-30	-12
79L15 steel construction	-17,2	-30	-15
79L18 steel construction	-20,2	-35	-18
79L24 steel construction	-26,2	-35	-24

The prefix depends on the manufacturer:

LM 79 Lxx ACZ; MC 79 Lxx CP; uA 79 Lxx AWC; ML 79 Lxx A.

Stabilizers of constant negative voltage with a maximum output current of 1 A in the TO-220 package (Fig. 4)

A type	Input voltage, V		Output voltage, V
	Min	Mach
7905	-7,8	-35	-5
7906	-8,8	-35	-6
7908	-10,8	-35	-8
7909	-11,8	-35	-9
7912	-14,8	-35	-12
7915	-17.5	-35	-15
7918	-20,5	-35	-18
7924	-26,5	-40	-24

In TO-220 case: MC 79 xx CP;

LM 320 T xx;,uA79 xx SK;,uA 79 xx CU;

TDB 79 xx T.

In TO-3 case: MC 79 xx K; LM 320 K xx;,uA 79 xx CDA;,uA 79 xx KS; TDB 29 xx KM.

Constant positive voltage stabilizers with an output current of more than 1 A in the TO-3 package (Fig. 5)

A type	Input voltage, V		Output voltage, V	Output current, A
	Min	Mach
78Н05	7.0	20	5	3
78N05 KS	8,0	25	5	5
78N12KS	15	25	12	5
78N15KS	18	25	15	5
LM323 K	7	20	5	3
tdB 0123 KM	7	20	5	3
78P05	8	35	5	10

Positive DC voltage stabilizers, housing - TO-220 (Fig. 3) or TO-39 (Fig. 6)

In TO-220 case: L 78 xx CV; MS 78 xx SR; L 200 xx CV (2 A); LM 340 T xx; .uA 78 xx SK; STC 28 xx EU; TDB 78 xx T.

In the TO-3 case: MS 78 xx SK; .ua 78 xx CDA; .uA 78 xx KS; LM 309 K; LM 340 K xx; LM 340 KS xx; SFC 28 xx RC; TDB 78 xx.

Adjustable positive voltage regulators

A type	Maximum input voltage, V	Output voltage, V	Maximumoutputcurrent, A	Location of pins. rice.	schemeinclusions, fig.	Notes
L200CV	40	3 37	0 .. 2	11	17	TO-220/5
tdB0200SP	40	3 37 ..	0 2	11	17	TO-220/5
LM317T	40	1,2 37	1.5	8	18	TO-220
LM317K	40	1,2 37	1,5	9	18	TO-3
TL317LP	40	1,2 37	0,1	7	18	TO-92
.uA78MG	40	5 30	0,5	10	19	TO-220/4
.uA78SKS	33	5 30	1	12	19	Prass=12 W
.uA78HGKC	30	5 24	5	12	19	Prass=50 W
LM338	30	5 24	5	12	19	Prass=50 W
LM723	40	2 37	0,15	13	20	DL-14
LM723TO	40	2 37	0,15	14	20	TO-100
L123	40	2 37	0,15	13	20	DL-14
L146CB	80	2 77	0,15	13	20	DL-14
L146CT	40	2 .37	0,15	14	20	TO-100
tdB1146DP	80	2 77 ..	0,15	13	20	DL-14

Other integrated stabilizers in the TO-100 package: uА 723 CL; uA 723 NS; SA 723 STS; L 123 T1; LM 723 CH; MS 1723 CG; RC 723 T; TDB 0723; TDC 0723.

Other integrated regulators in DIL-14 package: uА 723 PC; CA 723 CE; L 123 SV; LM 723 CN; MS 1723 SR; RC 723 DB.

Ris.13

Ris.14

Rice. 15. Scheme of switching on the positive voltage stabilizer

Rice. 16. Scheme of switching on the negative voltage stabilizer

Rice. 17. Scheme of switching on the stabilizer type L200 with current limitation

Rice. 18. Scheme of switching on the stabilizer type 317 with current limitation

Rice. 19. Standard circuit for switching on a current limiting stabilizer

Rice. 20. Scheme of switching on the stabilizer type 723 with current limitation

Rice. 21. Obtaining a stabilized negative voltage using a positive voltage stabilizer

Rice. 22. Adjustable voltage regulator

Literature

1. Funkamateur, No. 9/1999

2. Radio amateur №4/2000

Translation by A. Belsky; Publication: N. Bolshakov, rf.atnn.ru

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