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 ELECTROJUMBLE

INDUCTIVE  COMPONENTS   - Transformers Chokes and Loudspeakers

Home Up Resistive Capacitive Inductive

For purchasing information, please see Information page - Button above

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Chokes - Power Supply Types   Smoothing Chokes Iron Cored Inductors 
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Cat No.

Click images for larger pictures

 Description Condition Price

GBP
  INDUCTORS, TRANSFORMERS & Loudspeakers
RF FILTERS and Crystals
L151

Filt_SFE-10-7.jpg (11206 bytes)

 Ceramic Filter 10.7 MHz.     SFE10.7M   Murata New Old Stock 0.45
L152

,Res_MB8L.jpg (13840 bytes)

Ceramic Filter  BPMB8L

 New Old Stock 0.45
L153 , Ceramic Filter LT465B New Old Stock 0.45
L154

,Res_SFU465B.jpg (14052 bytes)

 Ceramic Filter   SFU450B  DATA New Old Stock 0.40
L155

Resonator.jpg (9166 bytes),

 Ceramic Filter  SFU465B DATA New Old Stock 0.40
L160x Ceramic Filters  Other types available include :- CSB456F18, KMF C366A,  CSA4.00, CSA2.00, CSA16.93, New Old Stock Various
L200x . Osmor Coils  A few of these available.  See original data sheet here.
The following 13 types only are now available:-
QA1,2,5,6
QO2,5,6,7
QHF1,6
QT/PP		 New Old Stock 

From 6.00
RF Coils, IF Transformers, Ferrite and Components
 The values given for the inductances and resistances are a guide only and are approximate within the limits of my component bridges.  Further data will be posted when further data are available.
The 10mm and 15mm inductors have two rows of pins  with 2 and 3 pins.  Winding A is the 3 pin row.
L411 Transformer Toko 15mm
 Two windings, one approx centre tapped bifilar wound Adjustable 8 to 15mH approx.
Secondary 2.5 to 4mH approx.   
With windings and top adjustment cap removed		 New Old Stock 0.30
L413 Transformer Toko 15mm.  Construction as L411
Single coil with taps at 10% and 50%.
Total inductance adjustable from 5 to 11mH. 		New Old Stock 0.30
L421 IF Transformer. 10.7MHz Toko N2791PQP  X2792SBS.
10mm x 20mm.
New Old Stock 0.90
L422 10.7MHz Transformer 7A 127N.  10mm size.
Equivalent to RadioShack 10565057
Two windings:- 
A.  4.3 µH with parallel capacitor ,
B.  0.1 µH.		 New Old Stock 0.65
L423

423.jpg (9009 bytes)Toko_423.jpg (9415 bytes)
Inductor.  Toko Coil 10mm Type FT06423.   Single winding 5 turns. With adjustable ferrite core.      Approximately 2.5 µH.   
Can is easy to remove on these coils.  Cut the corners a few mm up from the base and slightly peel back - the coil falls out.  Can is then reusable.
New Old Stock 0.20
L424

424.jpg (9982 bytes)Toko_424.jpg (8816 bytes)
Inductor.  Toko 10mm Type FT06424.  Single winding 3 turns.  With adjustable ferrite core.   Approx 1 micro Henry.   
With 50 loose turns wound on, the coil is adjustable from approximately 100 to 200 micro Henries. 
Can is easy to remove on these coils.  Cut the corners a few mm up from the base and slightly peel back - the coil falls out.  Can is then reusable.
New Old Stock 0.20
L425

Toko_425.jpg (11939 bytes)

 HF Transformer.  Toko 10mm Type FT06425 identical with 08641. Two windings of 3 turns and 1 turn on former with ferrite adjustable core.   Approximately 1 micro H.   The 3t winding resonates at 120MHz with 18pF in parallel. 

 Toko_425_inside.jpg (9688 bytes)Toko_425_inside_a.jpg (8672 bytes)The can has been removed to show the construction and windings. 

 New Old Stock 0.10
L427 IF Transformer 10mm Tunes 450 - 550 kHz.  Type 4A-224,  Yellow Core.
10mm Intermediate Frequency Transformer.  Two Windings.  
A. Centre-tapped 670 µH 4 ohm with parallel capacitor.
B. 1.6µH 0.1 ohm.
             Internal Construction. 		New Old Stock 0.90
L428 IF Transformer (10.7 MHz ?) 10mm 7A-247R.  Blue Core
Equivalent to RadioShack 10564987
Two Windings.   Construction as L427
A. 4 µH 0.4 ohm with parallel capacitor.
B. 13µH 0.5 ohm.		 New Old Stock 0.65
L429 IF Transformer 10mm 460-470kHz with external capacitor. 4A-363R
Equivalent to Sony 012-003630-010:  Aiwa 6144SCA006IFT
Two Windings.   Construction as L427
A. Centre-tapped 31µH 1 ohm.  Adjustable from 25µH to 50µH
B. 1.1mH 9.5 ohm.  Adjustable from 1.04mH to 2.0mH.
 New Old Stock 0.45
L431 IF Transformer 10mm  1A621R
Two Windings.   Construction as L427
A.  350µH 3.4 ohm with tap.  Adjustable from 300µH to 450µH.
      Tap is at approximately 10%
B. 1.5µH 0.1 ohm.  		New Old Stock 0.55
L432 Inductor 10mm  FT06432
 Single winding of approximately 0.5µH.  With adjusting slug
(Winding connected to the outer pair of the 3 pins) 		New Old Stock 0.20
L433 Inductor 10mm  FT06429
 Single winding of approximately 0.6µH.  With adjusting slug adjusts from 0.35 to 0.7µH.
(Winding connected to the pair of the 2 pins) 		New Old Stock 0.20
L434 IF Transformer 10mm FT06430
Two Windings:-  
A.  720µH 5.8 ohm with tap and parallel capacitor.  Adjustable from 500µH to 920µH and tuneable from 420 to 500 kHz.    Tap is at approximately 5%
B. 0.6µH 0.3 ohm.  		New Old Stock 0.45
FORMERS and TUNING SLUGS
L451u Coil Former - Neoform.. Black or Nylon as available
Slug tunable - coarse thread
7mm diameter, 21mm high, fixing centre holes 20mm apart.
Slugs type  L471a fit.		 Used 0.25
         
L461 Ceramic Former.  Ceramic Core/Tube 60mm long, 12mm diameter with 7mm diameter longitudinal hole. Unused 0.35
L462 Coil Former. ICM 187A.  19mm square x 14mm deep. Core 8mm square with 10mm width.  Central hole 7mm square. Unused 0.10 or 5 for 0.35
         
L470 Ferrite Core. Tuning Slug.  Hollow hexagonal for 1.9mm hexagonal key.  4.5mm OD 8mm long with a thread pitch of approximately 0.5mm. New Old Stock 0.20
L471a Brass Tuning Slug  -  12mm long x 6mm outside diameter.  Pitch approx 1mm.    Matches 25 BSW pitch.  End slotted. Ex equip 0.20
L472 Ferrite Core. Tuning Slug.  Both ends slotted.  2.7mm OD 8mm long with a thread pitch of approximately 0.5mm. New Old Stock 0.25
L474 Ferrite Tuning Slug. 
4.9 x 14 mm ferrite,  38mm overall.  Slotted 6BA thread		 Used? 0.50
L474 Ferrite and Brass Tuning Slug.  
5.3 x 15mm ferrite, 13mm brass. 54mm overall. Slotted 6BA thread		 Used? 0.50
FERRITE CORES and Ferrite Rods
L524 . Ferrite Core Mullard Philips FX2633.
Single hole. 8mm diameter x 6mm thick. 1.6mm hole.
Broadband and Pulse use. Material grade A13.
Approximately 15 turns for 1mH.  		New Old Stock 0.15
L525 Ferrite Core Mullard Philips FX2754.
Double Hole Rounded.  13 x 8 x 6mm. 3mm holes.
Broadband and Pulse use. Material grade A13.
Approximately 15 turns for 1mH.  		New Old Stock 0.25
L526 Ferrite Core Mullard Philips FX3316. 
Double Hole rectangular.   11 x 5 x 6mm 1.4 x 1.6mm square holes.
Broadband and Pulse use. Material grade A8.
Approximately 15 turns for 1mH. 		New Old Stock 0.20
L527 Ferrite Core Mullard Philips FX3391. 
Double Hole rectangular. 11 x 5 x 6mm 1.4 x 1.6mm square holes.
Broadband and Pulse use. Material grade A13.
Approximately 10 turns for 1mH. 		New Old Stock 0.20
L548 Ferrite Core Mullard Philips FX1115 Screening Bead.
 4.3mm diameter, 1.3mm diameter hole, 5.8mm long.
Adds >25 ohms impedance at 10-40MHz when threaded on wire.		 New Old Stock 5 for 0.25
L547 Massive Ferrite "I"  FX2263  Solid but may have small chips from storage.
Matches L548 FX2264 to form complete core with 45mm square opening.   50 x 50 x 155mm.  2kg		 Unused 4.25
L548 Massive Ferrite "U"   FX2264  Solid  but may have small chips from storage.
100 x 50 x 155mm.   3kg		 Unused 7.25
L591 Ferrite Pot Core Vinkor - Mullard LA1421 pairs. 
Mullard Data Sheets HERE. (pdf 300k)
This is the replacement type for the LA1291, LA2901 and LA2936 according to Mullard data.  Approx 94 turns for 1mH or 113nH per turn.  
No adjusters available.  10mm diameter, 7mm high as pair.		 Unused Old Stock

0.22/pair
or
10 pairs for 1.20
. . A few other ferrites beads and pot cores available such as  LA1497, LA1530, LA4328 and LA4344.  To be listed.
See also below TSnn for larger, low-frequency types		 . .
L605 Ferrite Rod
14mm diameter x 103mm long approx.  Mostly red spot grade marked		 Unused Old Stock 1.35
         
L700 . RF Chokes - various vintage types available.    From 0.25
L800 . Fixed Inductors - various modern and vintage from 1µH to 10mH   From 0.25
AUDIO and Low Frequency Inductors, Transformers and Speakers GBP
TS20 Driver Transformer for Transistor Circuits Radiospares (RS) T/T1 - 2mW
Ratio 1:1 with centre tapped secondary see RS data sheet for details
21 x 16 x 17mm.  For OC71 driving two OC72.
Unused		 Unused Old Stock 7.55
TS22 Push-Pull Output Transformer for Transistors Radiospares (RS) T/T7 -500mW
Ratio 9.2:1 with centre tapped secondary see RS data sheet for details
37 x 24 x 30mm.   For 3 ohm loudspeaker and 2 x OC81
 Used Tested 6.55
TS25 Push-Pull Output transformer for transistor circuits.
Ratio 6+6:1.  Primary inductance 0.3H +0.3H, resistance 32 +32 ohms, approx.
Secondary inductance 12mH, 0.4 ohms.
For pcb mounting 20x15x15mm.  Flying leads
 Unused Old Stock 7.55
TS27 TS27.jpg (36444 bytes) Audio Transformer  Impedance Matching type TS27

General-purpose and line matching - power rating 10W.  Ratios from 4 to 40:1.  Click HERE for some test data and impedances.   

70 x 40 x 45 mm overall   330g.                     

 Unused Old Stock 3.75
TS28 1to1 Trans.jpg (21557 bytes) Audio Transformer  Impedance Matching.  1:1  600 ohm nominal.
Type 26343      28 x 26 x 22mm excluding 6mm pins. 		Unused Old Stock

3.90
TS29 RS217-775.jpg (26368 bytes) 100 volt line Loudspeaker Matching, 30W.  RS type 217-775. For 4, 8 and 16 ohm speakers, tapped for 1, 2, 5, 15 and 30W.    1.00 kg.  (RS price 14.00) One only remains. New Old Stock 6.90
TS41 AF Choke Wearite 214. approx 170H.  total dc resistance 5,100 ohms approx. Tapped at approx 33%.   37mm high excluding terminals, 28mm diameter.  Some Mounting clips available. Possibly tape recorder spares?  New Old Stock 5.40
TS42 As TS41 AF Choke Wearite 213. approx 170H.  dc resistance 5,100 ohms approx
37mm high excluding terminals, 28mm diameter. 		 Ex Equipment 3.90
TS52 2 Transformers Mullard Vinkor LA2505 (or equivalent) with two windings and red tuning slugs .
Approximately 3.0mH and 0.21mH.  DC resistance 3.5 and 0.3 ohms.      Supplied as matched pairs.  ex Racal.
            Also available less tuning slugs at 2.00 GBP per pair.		 Unused 3.95 per pair
TS53 Transformer Mullard Vinkor LA2505 (or equivalent) with two windings and red tuning slug . Approximately 3.0mH and 0.21mH.
DC resistance 3.5 and 0.3 ohms.           Marked BA20058. 
A sample could be adjusted from 2.85 to 3.3mH.		 Unused 2.60
TS63 Mullard LA5 Vinkor. 
Original 35mm range LA5 Inductor, replaced later by LA1174.
Silver plated brass plates.
<70 turns per mH.   2 only left.		 Unused 11.00
TS64 Mullard LA7 Vinkor. 
Original 35mm range LA7 Inductor, replaced later by LA1212.
Silver plated brass plates
<39 turns per mH.		 Unused 9.20
Power Supply Chokes - Various Types available.  
CH221 1H 54 ohms.  GR17769 XD  306/1  Magnetically screened.
32 x 32 x 45mm.  2 hole fixing at 39mm centres.		 Ex Equip 5.20
CH232 0.15H 60 ohm. centre tapped at 15 ohms and also at 3 ohms.
RS Tapped Choke rated at 0.9A dc. 70 x 55 x 55mm.
Mounting holes at 82mm. 		Unused old stock 12.20
CH235 Choke 0.12H <0.2 ohms. 
95 x 70 x 80mm		 Ex Equip 9.50
CH237 . Choke 0.75H 200mA  Parmeko. Sealed - with ceramic terminals
Neptune style services ref 5950-99-580-0727
52 x 52 x 95mm. Tapped fixing holes 34mm centres, with bolts.
Dented label.    		Unused? 5.50
CH239 Choke 5H 210 ohms.  Probably rated at about 60mA
55 x 45 x 45mm.  Mounting holes at 63mm.  		Ex Equip 5.20
CH241 . Choke 6.5H 210 ohms.  Rated at 5mA DC.
21x21x 35mm. Mounting holes at 28mm.  		Ex Equip 4.50
CH243 12H  270 ohms.  10C/5345  ex Air Ministry. Shrouded.
Rust on case, insulation good.
70 x 65 x 80mm.  Mounting holes at 55x50mm.		 Ex Equip 5.00
CH244 14H  215 ohms. Type R3? Antique possibly Ferranti 1930 approx. 
Pair available
80 x 65 x 90mm  1.3kg.
Ex Equip 50.00
for Pair
LOUDSPEAKERS
LS101 LS101.jpg (29187 bytes) 8 ohm 100mm Speaker.   General Purpose replacement Speaker.  New Old Stock 1.80
LS102 LS_RS248-549_35ohm.jpg (22245 bytes) 35 ohm 85mm 3.375" Loudspeaker.    RS type248-549. Unused, boxed.  35mm deep. 71mm FC. New Old Stock

3.80
         

Home Up Resistive Capacitive Inductive 

 

 For information on how to buy, please see the information page

Information Page
Last update:   March 11, 2013