RESISTORS, COIL

Ebonite bobbin in ebonite case,

Stocked resistors - 50, 200, 250, 300, 600, 1000, 2000, 3000, 4000 and 10,000ohms.

Range - 1 to 10,000ohms.

Dimensions - 3.5" x 1.4" x 1.25".

Superseded by Resistor, Coil No. 23
 

Brass bobbin in metal case.

Used on battery leads.

Stocked resistors - 10, 20, 50, 80, 100, 120, 150, 200, 250, 300, 500, 1,000 and 2,000.

Range - 1 to 4,000ohms.

Dimensions - 3.4" x 1.5" x 1.75".
 

Resistor with a red fibre former.
 

Wound on a white, moulded ceramic bobbin with two solder tags.  These can be inductive or non-inductive.

Rating up to 500 ohms - 10 Watts.
Rating over 500 ohms - 8 Watts.

Resistance tolerances - No. 9 (Values 1-2000ohms)
1ohm  - ±10%.
1-10ohms - ±5%.
Over 10 ohms - ±2.5%.

Resistance tolerance - No 9A (Values 100-500 ohms only)
All - ±1%.

Size - Height 25mm x Diameter 25mm.

Drawing - 9278 (Mark 2).

Specification - D748 (Mark 2).

Wound on a moulded Bakelite bobbin with two solder tags. These can be inductive or non-inductive.

Range - 4 to 20,000ohms.

Rating - 2 Watts.

Tolerance - No. 12 - ±2.5%.
Tolerance - No 12A - ±1%.

Size - Height 16mm x Diameter 25mm.

Drawing - 9263.

Specification - D737.

A resistor with two values, used on Tester No. 80.
 

A vitreous embedded resistor with an E.S cap.

Used on Stands for 2-lamps.

Resistance - 45ohms.

Rated at 90 Watts.
   

Wound on a moulded Bakelite bobbin with two soldered tags.  Inductive only.

Range - 0.5 to 10,000ohms.

Rating - 0.5 Watts.

Resistance tolerance No. 15 - ±2.5%.
Resistance tolerance No. 15A - ±1%.

Size - Height 7mm x Diameter 25mm.

Drawing - 9537 (Mark 2).

Specification - D783 and D1832.
 

A multi value resistor with a 7 section moulded bobbin and solder tags on each section separator.

Rated at 0.5 Watts per section.

Drawing - 60844.

Specification - D1074.
 

A multi value resistor with a 8 section moulded bobbin and solder tags on each section separator.  Non-inductive.

No. 17A is used on Units, Amplifying and No. 17C used on Unit, Auxiliary, Apparatus TG988.

Rated at 0.5 Watts per section.

Drawing - 60844.

Specification - D1074.
  

A multi value resistor with a 9 section moulded bobbin and solder tags on each section separator.

Rated at 0.5 Watts per section.

Drawing - 60844.

Specification - D1074.
 

A multi value resistor with a 12 section moulded bobbin and solder tags on each section separator.

Rated at 0.5 Watts per section.

Resistances - 12 x 50ohms.

Drawing - 60844.

Specification - D1074.
 

This resistor comprises of a pair of Resistor, Coils No. 21.

Resistance tolerance - ±0·5%.

Rated at 30 Watts each.

No. 21/ 2K - 2k+2k Ohms.  For Rectifiers No's 26B, 27A and Units, Auxiliary Apparatus TG I020.
No. 21/3·2k - 3.2k+3·2k Ohms - For V.F. telegraphs.
No. 21/4k - 4k+4k Ohms - For Units, Auxiliary Apparatus TG 1021.

Drawing - CD202

Specification - D1457.
 

Vitreous enamel resistor.

Rated at 25 Watts.

Used with Panel., Fuse and Test No. 1.

No. 21A - 2+2ohms.
No. 21B - 1.6+2ohms.

Drawing - CD202

Specification - D1457.
 

This is a Resistor, Coil No. 12 with special mountings, called a Case, Resistor, Coil No. 23.

Drawing - 62202

Supersedes the Resistor, Coil No. 1.
 

A vitreous embedded resistor.

Resistance - 40ohms.

Rated at 160 Watts.

Used on Equipments, Telegraph, TGD 7 etc.

Dimensions - Length 10" x Diameter 1.25".

To be requisitioned separately as required:-
2 x Clips No. 72.

Drawing - CD347.
 

A resistor, wound on a white, moulded ceramic bobbin with a hollow centre to prevent overheating.  Coated with a vitreous enamel and fitted with two soldering tags.

Resistance - 100ohms only.

Rating - 10 watts.

Size - Height 27mm x Diameter 27mm.

Drawing - 63367.
 

Drawing - CD358
 

Vitreous embedded resistor with wire ends.  Suitable for tropical use.

Rated at 50 Watts.

Range - 60, 100, 125 and 3.6k Ohms.

 Resistance correct to ±5% of nominal value.

Dimensions - Length 3.5" x Diameter 7/8".

For Perforators No's 43, and 44.

Drawing - CD454.
 

Vitreous embedded resistor with caps and clips.

Used to obtain 80+80v supply from two Rectifiers No. 22.

Resistance range - 250, 300 and 400.

Rated at 25/30 Watts.

Dimensions -  Length 2" x diameter 1/4".
 

Vitreous embedded resistor with caps and clips.

Resistance - 200ohms.

Rated at 35/40 Watts.

Dimensions - 4" x 9/16"

Used for obtaining 80+80v supply from two Rectifiers No. 22.
 

A precision wire wound resistor wound on a multi section ceramic spool with wire ends.

Resistances - 10k, 100k and 1M Ohms.

Dimensions - Length 1" x Diameter 1/2".

Specification - D1622.
 

A resistor based on a red fibre bobbin with two tinned, copper wire ends.  Non-inductive.

For use on H.F. circuits.

Range - 1 to 5000ohms.

Resistance correct to ±1%.

Rated at 10mW.

Dimensions - Length 7/16" x Diameter 5/32".

Drawing - 66202.
 

A vitreous enamel resistor with wire ends.

Used on the Rectifier No. 60A.

Resistance - 720ohms.

Rated at 20 Watts.

Dimensions - Length 2" x Diameter 1/2".
 

A resistor with a vitreous enamelled winding on a ceramic former.  Has a clamp on each end with a wiring tag on each.

Resistance - 20,000ohms.

Dimensions - Length 2" x Diameter 3/4".

Drawing - CD718
 

Miniature, wire-wound, vitreous enamel with two wire ends.

Resistance tolerance -  ±10%

Range - 0.47 to 0.82ohms (No. 35) and 1 to 10,000ohms (No's 35A and 35B).

Standard range - 10 to 4·7k Ohms.

Rated at 2.5 Watts.

Dimensions - Length 12.7mm x Diameter 5.6mm.

Drawing - CD751 and CD1989.

Specification - D2496.
 

 Wire-wound, vitreous enamel resistor with two wire ends.

Used on Coaxial Panels No. 13A etc.

Range - 1 to 68,000ohms.

Standard range - 4.7k to 30k Ohms.

Rated at 9 Watts.

Dimensions - Length 38.1mm x Diameter 8mm.

Drawing - CD1989.

Specification - D2496.
 

A resistor that is wire wound on a ceramic former with a vitreous enamel winding with two tinned copper wire ends.

Used on Coaxial Panels No. 7B.

Stocked Resistance - 2·5k Ohms.

Resistance tolerance - ±10%.

Resistance Range - 37 to 2500ohms.

Rated at 45 Watts.

Dimensions - Length 1.5" x Diameter 11/16".

Drawing - CD769.
 

A resistor that is wire wound on a ceramic former with a vitreous enamel winding with two flexible wire ends.

Resistance range - 6 to 25k Ohms.

Resistance tolerance -  ±5%.

Rated at 40 Watts.

Dimensions - Length 4" x Diameter 1/06".

Drawing - CD770.
 

Miniature, wire wound, vitreous enameled resistor on a ceramic body, suitable for use in series with Lamps.

Resistances - 0 to 20,000ohms.

Resistance tolerance - ±5%. 

Rated at 6 Watts.

Dimensions - Length 22.2mm x Diameter 8mm.

Drawing - CD1989.

Specification - D2496.
   

A vitreous wire wound resistor on a ceramic former with a Brass tag at each end.

Designed to mount in one 3000 type relay space.

Resistance range - 22 to 3.9k Ohms.

Resistance tolerance - ±10% (No. 41) and ±5% (No. 41A).

Rated at 25 Watts at 250v.

Dimensions - Length 1.25" x Width 0.5" x Height 1.125".

Drawing - CD959.
 

A vitreous wire wound resistor on a ceramic former with a Brass tag at each end.

Designed to mount in one 3000 type relay space.

Resistance range - 39 to 5.6k Ohms.

Resistance tolerance - ±10% (No. 42) and ±5% (No. 42A).

Rated at 40 Watts at 450v.

Dimensions - Length 1.625" x Width 0.5" x Height 1.125".

Drawing - CD959.
 

A vitreous wire wound resistor on a ceramic former with a Brass tag at each end.

Designed to mount in one 3000 type relay space.

Resistance range - 68 to 8.2k Ohms.

Resistance tolerance - ±10% (No. 43) and ±5% (No. 43A).

Rated at 55 Watts at 500v.

Dimensions - Length 2" x Width 0.5" x Height 1.125".

Drawing - CD959.
 

A wire wound, vitreous enamelled resistor with four tappings connected to three resistances. Each tapping has a stranded wire with wire loop for 6BA.

Fixed by means of a metal screw through the centre of the ceramic former.

Resistances - 20+20+28ohms, giving a total of 68ohms.

Resistance tolerance - ±5%

Rated at 10 Watts.

Dimensions -  Length 1.8" x Diameter 0.4".

Drawing - CD966.