Radio Valves and Their Varying Characteristics

Radio Record, Volume I, Issue 26, 13 January 1928, Page 3

Radio Valves and Their Varying Characteristics

USEFUL TABLES FOR. FILING AND REFERENCE

Note---We have assummed an anode resistance of 100,000 ohms in all cases except the dew, Wilere We Dave ahsumed 200,000 ohms. RESISTANCE CAPACITY VALVE ADDITIONS TO THE "MULLARD P.M." SERIES. The Mullard P.Mia and P.M.3a, revently added to the range of P.M, Receiving valves, are the equivalents of the P.M.ob, deseribed above. but for use with 2.0 volt and 4.0 voll accumulators respectively.

The first figure of the number follow age; the two last figures indicate the relinble method of classification of the the type-letter and number give some every particular valve to which they "Miniwatt" valve, with a filament eurrent 6 volts, and gn amplification factor of 9

Philips ‘"four-fifteen" super-detector and first audio-Ad15, fil. 4v. 08 amps., auipli, 15, slope 2mA/V. 1-H.1I", amplifier, twodetector; 38-aundio, 4-resistance coupling, db-loudspeaker. "Miniwatt" yalyes are systematically elassilied by a character and a number of three figures. The filament current is indicated by one of the following letters:A for a filament current of from ‘0.06-0,08 amp: B for a filament eurrent of from 0,1 0.15 amp. ing the letler indicates the filament voltamplification. factor, In this way a vilye types is obtained, and, moreover, information regarding the qualities of apply, Tor instance, A609 (means; of about 0.06 amps. a filament voltage of

Trade name and Name and address model number. of mannfeaturer. Radiotron- Recommended use. Radio Corp. of America ..., UX-201-A Det. and Amp. UY-199 Det. and Amp. UX-109 Pet. and Amp. UX-240 High Mu Det. and Amp. WD-1i Der. and Amp. WxX-12 Det. and Anip. UX-12) Power Amp. | UX-40-A Det. UX-312-A Power Amp. UX-171 Power Amp. UX-210 Power Amp. AudionDe Forest Radio Co. ...... D-401-A Det.Amp. D-400A Det. 6 1D-412 Power Amp. D-471 Power Amp. D-4106 Power Amp.

Tilament Filament Detector Maximum terminal current plate amplifier Amplifieation yoltage, amperes. voltase. plate voltage. factor, Bs) 2 s) oo -) oe O08 45 90 eH} 8.8 LO 45 90 6.5 a 25 » 155-800 35-180 30 11 25 45 5 6 Li 225 45 on f 345 132 135 3.0 5 4 45 20 5 22h 45 157 8 5 a) 180 3 To 125 425 7.7 5 25 92.45 135 9 5 2h 22-40 20 Hy ea) 155 Ss By) Ry) 180 3 75 1 500 q

Fil, ype of Fil. cur- Impedvit. rent. Vit. Amp. Ohms. valye. PMA ILE. 1.8 0.4 PMA U.P. 1.8 0.1 P.M2 18 0.15 P.M3 3.7 0.1 P.M.4 3.7 0.1 P.M254 3.7 0.25 P.M5X 5.5 0.1 P.M.5B 5.5 01 P.M 5.5 04 P3256 5.5 0.25 factor, Slope. ance. Amplication Vit. mA. As T..F. amplifier, transAs detector with As amplifier with former coupled and using As I.F. amplifler, resistance coupled mE 2 i " 3 x 3 grid grid return, correct grid bias as shown — grid bias as gz leak counceted to lead connected to pelow., All values of grid shown below 1s = Lz. plus, L.T. minus, bias are negative. minus -_ tom, * | i r~o --~, ~~ oo WT. H.C UT... T.0.T,TL.T.ILT, H.Y. H.T. HT. H.T. HT. TL.T, mA. Vit, Vili. Vit. Vit. ¥t. Vit. Wit. Vit. Vit. 7 G.B. 100 G.B. 125 G.B. 100 G.B. 125 a9 «50 T% 100 50 75 100 1254.B. 50 G.B. Vit. Vit. Vit. Vit. Vit. mA. mA.mA, mA.mAmA. MAMAVit.mA. Vit. mA. Vit, mA, Vit. mA. Vit. mA, Vit. ma. 8.0 0.57 08 16 2.5 08 1652.6 3.5 2.0 O04 8.0 0.45 8.00.7 17 3.2 5.0 15 610 25 2.0 3.5 28 8.5 0.5 4.5 0.6 20.0 40 2.6 7.0 4910.0 5.0 20.007 17 84 5.5 12 25 44 1.0 0.7 2.0 13 3.0 L7H 3.0 0.55 4.0 0.435 20014 384569112 3.5 6.5 10.0 25 1.75 4.0 3.25 7.0 3.75 50.0 5.0 6.0 9.0 ¥.0 12.0 14.0 17.0 16.0 30.0 0.4 O8518 31 07 17 80 45 10 038 15 07 2.0 12 80 17 2.0 0.35 3.0 O04 20.0 0.1 08 0.65.10 0.22 0.45 0.75 1.15 1.0 0.13 1.5 0.20 30.0 LS 46 94 1459.6 8.0 12.2 20 18 4.0 8.0 6.0 435 50.0 5.0 6.0 9 O 8.0 12.0 14.0 17,0 16.0

OPERATING CHARACTERISTICS OF THE P.M. SERIES.

Valve type. P.Mia P.Moa AmpiiFilament Fil. current fication volts. (amps), factor, 2.0 0.1 36 4.0 0.1 on Impedance (ohms). 72,000 63,000

1 Volt Series, _fiharae teristics, ‘Wil. yvolis .....065 Til, current ...- Plat, volts Amplification factor 2 Slope seeerecens ‘Impedance eeve Purpose — sseeeee 1 Fil. supply .sseee Characteristics, Fil. volts ...cee, Til. current .... Plate volts .... Amplification facor eererees Slope ecccccece Impedance eee PUTpOse .isseen Fil. supply ssseee A109. Aldi. B05. A225 A209 B205 1.0-1.8 volts 2 volts .06 OS 15 OG 15 20-150 2-20 20-150 20-150 20-150 20-150 4.5 8 243 2 5 45 1.0 6 4 20,000 4,500 = 6,2 300 41 000 iS, 000, 3,500 »2,8 4,2,8 2,3, 5 12 +t 1, 2, 3, 5 1 dry cell . "4a cell, 4 Volt A430. = A425, A410, A409. A441, Bi0G, 4 volts 165 1 50-150 815-150 = 20-450 10-150 "2-20 0-20-2150 30 25 10 9 4.0 6 By) 1 ay 1 1 of 60,000 25,000 20,000 f "00 4, 00 4,500 1 »24 1,238 , 3 1, 2,3 2, 3, 5 2 accumulator 2 Volt Series. B203 20-150 3 1.4 2,100 5)

6 Volt Series. Characteristics, A609. Beovs, A620, Til. VOltUS .o05 6 volts Fil. current , 16 rs 06 Plate volts . 20-150 20-150 50-150 Amplification Lactor save 9 5 30 Slope ecene 1.5 1.6 1 Impedance os 6,000 3,100 35,000 Purpose sooeer 12,3 2,3,5 1,2 Til. supply ... 38 accumulator celis "

PHILIPS VALVES: TYPES AND SERIES.