Electronica P carbon-film trimmer potentiometers

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Specifications

Type

trimmer, carbon film

Standard

STAS 9614/2-74

Construction

single, single, with shaft (see Variants)

Resistance (Rn)

100 Ω…5 MΩ

Resistance, min

100 Ω

Resistance, max

5000000 Ω

Law (taper)

lin

Tolerance

±20 % (Rn ≤ 250 kΩ), ±30 % (Rn > 250 kΩ)

Rated power (Pdn)

0.05–0.5 W (see Variants)

Rated power, log

0.15–0.25 W (see Variants)

Limit voltage (Unlim)

100–550 V (see Variants)

Limit voltage, log

350–600 V (see Variants)

Mechanical endurance

100…1000 operations

Mechanical endurance, min

100 operations

Climatic category

10/070/21, 25/070/21 (see Variants)

Temperature range

−25…+70 °C (see Variants)

Marking

in clear

Application

general use, especially radio and TV receivers

Variants (13)

											Note
P-32825	single	100 Ω…1 MΩ	1000000	—	0.05	—	100	—	10/070/21	—	fig. 17.3 a; printed „Z-32825” in the 2nd edition; P-32825 in the 1st
P-35057	single	100 Ω…1 MΩ	1000000	—	0.05	—	100	—	25/070/21	−25…+70 °C	fig. 17.3 a
P-32384	single	100 Ω…5 MΩ	5000000	—	0.1	—	150	—	10/070/21	—	fig. 17.3 b; versions B, C; R salt ≤ 7 % Rn (as printed)
P-32409	single	100 Ω…5 MΩ	5000000	—	0.1	—	150	—	10/070/21	—	fig. 17.3 c; versions B, C; R salt ≤ 7 % Rn (as printed)
P-32824	single	100 Ω…1 MΩ	1000000	—	0.05	—	100	—	25/070/21	—	fig. 17.3 d; version A
P-36065	single	100 Ω…1 MΩ	1000000	—	0.05	—	100	—	25/070/21	−25…+70 °C	fig. 17.3 e
P-32385	single	100 Ω…5 MΩ	5000000	—	0.1	—	150	—	10/070/21	—	fig. 17.3 e; versions B, C; R salt ≤ 7 % Rn (as printed); fig. e as for P-36065, in both editions
P-32481	single	100 Ω…5 MΩ	5000000	—	0.1	—	150	—	10/070/21	—	fig. 17.3 f (A), g (C, D, E); versions A, C, D, E; R salt ≤ 7 % Rn (as printed)
P-32383	single	100 Ω…5 MΩ	5000000	—	0.1	—	150	—	10/070/21	—	fig. 17.3 h; R salt ≤ 7 % Rn (as printed)
P-33748	single, with shaft	100 Ω…5 MΩ	5000000	—	0.1	—	150	—	10/070/21	—	fig. 17.3 i
P-35578	single	lin 100 Ω…5 MΩ; log „100…1”	5000000	lin, log	0.3	0.15	550	350	10/070/21	—	fig. 17.3 j
P-34617	single	100 Ω…1 MΩ	1000000	—	0.05	—	100	—	10/070/21	—	fig. 17.3 k
P-35580	single	lin 100 Ω…5 MΩ; log „100…1”	5000000	lin, log	0.5	0.25	100	600	10/070/21	—	fig. 17.3 l; limit voltage printed lin 100 V, log 600 V

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Description

The P carbon-film trimmer potentiometers („potențiometre ajustabile”, „rezistențe semireglabile”) are the carbon-film presets listed in the Agenda radioelectronistului (2nd edition, 1989), made to STAS 9614/2-74 for general use, especially in radio and TV receivers [1]. Its characteristics list nominal values from 100 Ω to 10 MΩ; the table gives 13 types with ranges up to 5 MΩ, rated 0.05 to 0.5 W, most of them linear, P-35578 and P-35580 also logarithmic [1].

The Agenda radioelectronistului names IPEE Electro-Argeș of Curtea de Argeș and IIS Electronica of Bucharest as the producers of the potentiometers in its section on potentiometers made in Romania, in both editions, without saying which works made which type; they are listed here under Electronica [3][4]. Electronica românească. O istorie trăită, vol. I, says that Electronica imported in 1969 a production line for film potentiometers from Siemens (West Germany), and that it made single potentiometers with or without a mains switch, tandem and push-button potentiometers, defined by its internal norm NID 2195-67 [5].

The book does not explain the codes [1]. The letters after a code are versions (for P-32481, A in fig. f and C, D, E in fig. g) [1].

Printed so in both editions: P-32385 and P-36065 both point to fig. 17.3 e, the logarithmic ranges of P-35578 and P-35580 are given as „100…1” without units, and P-35580 has a limit voltage of 100 V linear and 600 V logarithmic [1][2]. The 1st edition (1983) prints the first code as P-32825 (2nd edition: „Z-32825”) [2][1].

Resistance in the E6 series (units of the table: lin Ω…MΩ). Dimensions in mm: see the drawings (fig. 17.3 a…l) [1].

References

[1]N. Drăgulănescu – „Agenda radioelectronistului”, 2nd edition, Editura Tehnică, 1989, section 17.2.1.3 „Potențiometre ajustabile (rezistențe semireglabile) cu pelicula de carbon”, pp. 208–213

[2]N. Drăgulănescu – „Agenda radioelectronistului”, 1st edition, Editura Tehnică, 1983, section 3.2.2.1.3 „Potențiometre ajustabile (rezistențe semireglabile) cu pelicula de carbon”, pp. 175–180

[3]N. Drăgulănescu – „Agenda radioelectronistului”, 2nd edition, Editura Tehnică, 1989, section 17.2 „Potențiometre și rezistențe semireglabile produse în R.S.R.”, p. 202

[4]N. Drăgulănescu – „Agenda radioelectronistului”, 1st edition, Editura Tehnică, 1983, section 3.2.2 „Potențiometre și rezistențe semireglabile produse în R.S.R.”, p. 166

[5]D. F. Lăzăroiu, N. Millea et al. – „Electronica românească. O istorie trăită”, vol. I, AGIR, section II.6 „Componente, subansamble și ansamble conexe”, p. 230, and II.6.3.2.1 „Potențiometre”, p. 267

P carbon-film trimmer potentiometers

Specifications

Variants (13)

Description

Gallery

Documents

References