Atwater Kent Mfg. Co.

Model 275 (1st type)
Schematic
Voltage

Diagram of Model 275

Atwater Kent Mfg. Co.

Model 275
Socket, Trimmer
Parts List

In some Model 275 sets, the oscillator grid trimmer A3 is not used.

Model 275

Part No.	Name of Part
25798	Volume control, .5 U
26443	Cabinet complete
26444	Cloth screen
25865	Escutcheon window
25936	Escutcheon name plate
25814	Knob (volume and tuning)
25738	Knob (tone and range)
26283	Dial plate
24892	A.C. - D.C. switch
35560	Range switch
35630	Tone control switch
25022	Variable condenser

Transformers

Code No.	Part No.	Name of Part
T1	35450	No. 1 R.F.T.
T2	35460	No. 2 R.F.T.
T3	35470	Oscillator T.
T4	36326	No. 1 I.F.T.
T5	35910	No. 2 I.F.T.
T6	26501	Output A.F.T.

Resistors

Code No.	Part No.	Name of Part
R1	30350	Black-purple, .5 U, 1/3 W
R2	31830	Flexible, 250 ohm
R3	30320	Maroon, 10,000 ohm, 1/3 W
R4	31840	Gray, 30,000 ohm, 1/3 W
R5	30350	Black-purple, .5 U, 1/3 W
R6	30370	Green, 2 U, 1/3 W
R7	30340	Red-blue, .1 U, 1/3 W
R8	19820	Flexible, 48 ohm
R9	31970	Red-yellow, .25 U, 1/3 W
R10	30340	Red-blue, .1 U, 1/3 W
R11	30340	Red-blue, .1 U, 1/3 W
R12	30350	Black-purple, .5 U, 1/3 W
R13	30340	Red-blue, .1 U, 1/3 W
R14	35820	Flexible, 12 ohm
R15	31690	Iron core, 145 ohm

Condensers

Code No.	Part No.	Name of Part
C1	35590	500 MMF, 450 V
C2	33670	250 MMF, 500 V
C3	35840	50 MMF, 500 V
C4	35990	830 MMF, 100 V
C5	31160	.05 MF, 100 V, NI
C5A	35930	.25 MF, 200 V, NI
C6	33630	Double 250 MMF, 450 V, IND
C7	28130	500 MMF, 450 V, IND
C8	35790	Multiple .05, .05, .05, .03, .1 and .2 MF, 100 V
C9	23250	.01 MF, 450 V
C10	27630	.01 MF, 200 V, IND
C11	35760	.003 MF, 200 V, IND
C12	27630	.01 MF, 200 V, IND
C13	26660	.1 MF, 200 V, NI
C14	26158	Triple dry electrolytic 14, 8 and 8 MF

Trimmer Condensers

Double I.F. trimmer

Code No.	Part No.	Name of Part
A4, 5	35650
A6	35610	Single I.F. trimmer

Sockets

Part No.	Name of Part
26111	Socket (7 prong)
24494	Socket (6 prong)
24493	Socket (5 prong)

Miscellaneous Parts

Part No.	Name of Part
26706	Vernier shaft
26707	Vernier cap
26708	Ball bearing
26709	Trimmer screw
26711	Trimmer washer
27133	Trimmer mica
26323	T4 shield
21878	Shield disc
24327	T5 shield
26137	T5 shield insulator
24727	Antenna lead and card
26059	Instruction and log card, F1097
26332	Shipping container
26284	Dial light socket
16099	Dial lamp, 6 V
26451	Tube shield
26014	Top shield
26324	Base cover
26017	Back plate

Speaker

Part No.	Name of Part
26159	Speaker complete
25603	Diaphragm assembly
26501	Output transformer
26502	Field coil
26503	Choke coil (CK1)