National Co., Inc. 1-10A Schematic

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Product Information:
Model:1-10A
Manufacturer:National Co., Inc.

Schematics Content:

Please note: this content is a computer-generated interpretation of the above schematic and is provided only to help assist you in locating this schematic. For the actual text, please consult the schematic above. Thank you.

Page 1:

AUDIO PUT

HEATH Buck
"msn RED

TO HEATERS ?

DWG. NO, l SCHEMATIC DIAGRAM-TYPE I-lOA RECEIVER

PARTS L IST
SYMBOL FUNCTION TYPE RATING
Cl R.'F. 'Dining Capacitor.... ....... Air 15 mmf., max.
02 Detector Tuning Capacitor. . . . . . . Air 1,5 mmf. , max.
C3 R.F. Grid Return By-pass. . . .. . . . Mica 0.003 mfd., 50.' vdcw.
C4 R.F. Plate Return By-pass. . . . . . . Mica 0.003 mf'd. , 500 'vdcw.
C5 Screen By-pass................. . Copper Plate 0.0005 mfd.

I C6 Quench Frequency By-pass. . . . . . . . Mica 0.003 mfd. , 500 vdcw.
C7 Detector B+By-pass............ . Elec. 8 mf'd., 2(1) vdcw.
C8 lst Audio Cathode By-poss . .. . . . . Elec. 10 mfd., 50 vdcw.
CQ 2nd Audio Cathode By-pass. . . .. . . Elec. 10 mfd. , 50 vdcw.
010 Audio Coupling Capacitor. . .. . . . . Paper 0.1 mfd., 400 vdcw.
C11 Detector Grid Capacitor.. . . . . . . . Ceramic 50 mmf. , 500 vdcw.
012 R.F. Trimmer Capacitor.......... Air 5 mmf., max.

C13 Plate By-pass Capacitor. . . . . . . . . Mica 0.0(2 mfd- , |500 vdcw.
R1 Screen Dropping Resistor.. . . . . . . Fixed 33,000 ohms, 1/2 w.
R2 kgeneration Control. . . . . . . . . . . . Variable 50,000 ohms

R3 Detector Plate Dropping. .. . . . .. . Fixed 22,000 ohms, 1 w.
R4 lst Audio Bias Resistor. . . .. .. .. Fixed 4,7(X) ohms, 1/2 w.
R5 1st Audio Plate Resistor. . . . . . . . Fixed 0.1 megohm, 1/2 w.
R6 21d Audio Grid Ieak............. Fixed 0.47 megohm, 1/2 w.

i R7 Fixed 470 ohms, 1 w.
R9 Detector Grid leak. . . . . . . . . . . . . . .Fixed 18 megohms, 1/2 w.
R10 Screen B1eeder.................. Fixed 47,000 ohms, 1/2 w.
R11 T1 Pri. loading %sistor.. . . . . .. Fixed 47,000 ohms, 1/2 w.
L1 Ultra-audion Choke.............. See Note #1

I I2 Quench Frequency Choke. . . . . . . . . . Potted 250 mill ihenries
'ri Audio Transformer.......... . . Potted 4:1 ratio
Note #1: Used only on A, B and C Bands.

(C)John F. Rider

Page 2:

NATIONAL CO. INC.

BATTERY

Ac4 LINE

DETecT _ ~ ' coll. POWER
colL UH; CABLE

FIG.NO. 3 SOCKET

5886 POWER UN\T

(C)John F. Rider

Page 3:

NATI NAL PAGE 15-3

NATIONAL CO. INC.

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(C).Tohn F. Rider

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