Atwater Kent 20, #7960
Model: | 20, #7960 |
Manufacturer: | Atwater Kent |
Schematic Pages
Schematics Content
Page 1:
Atwater Kent Mfg. Co
Model 20
#7960
Data
Condensers
Detector phone | .002 mfd | #8241 | 500 volts |
Detector grid | .00025 mfd | #8112 | 500 volts |
Plate bypass | .3 mfd | #14902 | 450 volts |
Resistors
Grid suppressors | 600 ohms | #4949 | wire wound |
Detector grid leak | 2.0 megs | #15892 | 1 watt Green |
Detector bias | 450 ohms | #8190 | tapped 180-270 ohms |
A-f filament | 1.0 ohms | #8303 | brown covered |
Detector rheostat | 20. ohms | #8310 | |
R-f rheostat | 10. ohms | #4690 |
Transformers
1st a-f primary | 1000 ohms | #8060 |
1st a-f secondary | 8000 ohms | |
2nd a-f primary | 1700 ohms | #7661 |
2nd a-f secondary | 3250 ohms |
The detector grid bias resistor is adjacent to the detector socket. It is a flat resistor. The plate bypass condenser is adjacent to the 2nd r-f socket. The phone condenser is located between the detector and 1st a-f sockets.