Power Chokes: Large Transmitter Applications

Power Choke
200 µH @ 70 amps

(CPW) 521111033
Power choke. 200 µH @ 70 amps. 0.19" x 0.19" square enameled wire. 7-1/2" x 5" x 4-1/2". Mounting holes: 6-1/2" x 3-1/2". 4.854mm. NSN: 5950-01-157-6598.
 

Open Frame Power Choke
700 µH @ 45 amps

(CPW) L29602
Open frame power choke. 700 µF @ 45 amps. 0.1 ohm DC resistance. 3-3/4" x 4-5/8" x 5-1/4"H.
NSN: 5950-00-570-5074.
$95 each
 
$125 each

UTC Swinging Power Choke
0.4 Hy @ 1.75 amps
0.7 Hy @ 0.15 amps

(CPW) E7770
UTC swinging power choke. 0.4 Hy @ 1.75 amps, 0.7 Hy @ 0.15 amps. DCR = 0.9 ohm. 1500v Hipot. 5-3/4"D x 7-1/8"H. Used, removed. Only one available.
 

UTC Swinging Power Choke
0.7 Hy @ 1.10 amps
1.1 Hy @ 0.10 amps

(CPW) E7773
UTC swinging power choke. 0.7 Hy @ 1.10 amps, 1.1 Hy @ 0.10 amps. DCR = 4 ohm. 8kv Hipot. 5"D x 5-1/2"H. Used, but in excellent condition. Only 2 available.
$195
 
$155 each

Power Choke Reactor
0.6 Hy C.T. / 2.5 amps / 115v

(CPW) 9893-406014
Power choke reactor. 0.6 Henry C.T., 2.5 amps, 115 volts, DCR: 6 ohm. NSN: 5950-00-795-5549.

Dimensions: 3-1/2" x 4" x 6"H

 

Power Choke
1 Hy / 1.0 adc

(CPW) BE10426001
Basler Electric power choke. 1 Henry, 1.0 adc. 21 lbs. Made for Gates / Harris broadcast transmitter. Gates P/N: 476-0298-000.

Dimensions: 6-1/4" x 4-5/8" x 5-1/4"H

$125 each
 
$125 each

Hitran Inductor
0.75 Hy / 4.5 adc

(CPW) AP0475
Hitran inductor. 0.75 Henry, 4.5 adc, 12 kv test. 9" x 5-1/4" base, 8-1/4" high. Catalog #: AP0475. Alt. P/N: AP0194-1. Used, excellent condition.
 

Hitran Inductor
1.4 Hy / 1.5 adc

(CPW) AP0476
Hitran inductor. 1.4 Henry, 1.5 adc, 12 kv test. 9" x 5-1/4" base, 8-1/4" high. Catalog #: AP0476. Alt. P/N: AP0195-1. Used, excellent condition.

$375 each
 
$275 each

Power Choke
1.3 Hy / 1.5 adc

(CPW) 476-0264
Basler Electric power choke. 1.3 Henry, 1.5 adc. 22 lbs. Made for Gates / Harris broadcast transmitter. Gates P/N: 476-0264-000.

Dimensions: 5-1/4" x 5-1/2" x 4-1/2"H

 

Transformer Choke
2.5 Hy / 700 ma

(CPW) 21656
Freed transformer choke.  Hermetically sealed. 2.5 Henry, 700 ma, 100 / 120 cycles. DCR: 23 ohm, 1 kwv. NSN: 5950-00-647-7936.

Dimensions: 3.18" x 3.40" x 5.2"H

$135 each
 
*** SOLD OUT ***
 

UTC Swinging Choke
3 Hy @ 414 ma
15 Hy @ 50 ma

(CPW) F3584
UTC swinging choke. 3 Hy @ 414 ma, 15 Hy @ 50 ma. 875 wv. 4-3/8" diameter x 5-1/2"H. NSN: 5950-00-647-7098. Only one available.
 

Filter Reactor
3 Hy @ 15 dca @ 1200v / 380 cycles

(CPW) 10125
Magnatran filter reactor. 3 Hy @ 15 dca @ 1200v, 380 cycles. DC resistance = 6.6 ohm, operating volts = 25 kvdc. 59 gallon oil (may contain PCB). 36" x 59" max dimensions. New, never used. Made for Gates Radio. Harris P/N: 476-0339-000. Catalog # 10125, Diag. A91-10125.
$265
 
$9,500

 

High Voltage Choke
4 Hy @ 850 ma / 10 kv

(CPW) 949430
Electro Engineering high voltage choke. 4 Hy @ 850 ma, 10kv. RCA transmitter. 5" x 5" x 7"H. 26 lbs. Alt. P/N: E12873. Used, clean.
 
 
$225 each
 

Filter Choke
8 Hy @ 550madc
60 Ohms / 6,000v test

(CPW) 25C94
Thordarson filter choke. 8 Hy @ 550 madc. 60 ohms, 6,000v test. Sealed, bottom terminals. 5-3/8" square x 4-5/8"H. Weighs 15 pounds.
 

High Voltage Choke
10 Hy @ 600 ma / 4 kv wkg / DCR = 55 ohms

(CPW) E14398
Electro Engineering high voltage choke. 10 Hy @ 600 ma, 4kv wkg, DCR = 55 ohms. RCA transmitter. 6" x 6" base, 8"H. Alt. P/N: RCA B 3462668. Used, clean.
$149 each
 
$375 each

Swinging Choke
12 Hy @ 1.1 amps
5 Hy @ 1.7 amps

(CPW) CS13879
Also removed from Wilcox transmitters just like his brethren above. A perfect match for the TP-43074 plate transformer. 5kv test voltage. 21 ohm DCR. Made by Thermador Electric for Wilcox. 6-1/4" x 8-1/4" x 9-3/4" high (w/ insulators).
 

Filter Choke
15 Hy @ 600ma

(CPW) 38058
Companion choke to swinger above. 15 Henry @ 600 ma. Removed from Wilcox transmitters. 3kv test voltage. Made by Thermador Electric for Wilcox. 5-1/4" x 6-1/4" x 8-1/4" high (w/ insulators). DCR is 111 ohms.
$289 each - $265 (3+)
 
$150 each

Swinging Choke
15 Hy @ 60ma
3 Hy @ 6 amps

(CPW) CS13892
Removed from Wilcox transmitters, these bad boys are looking for a new job. An ideal power supply choke for that brute supply. 3kv test voltage. Made by Thermador Electric for Wilcox. 5-1/4" x 6-1/4" x 8-1/4" high (w/ insulators). DCR is 111 ohms. Wilcox P/N: 38057.
 

Swinging Choke
17 Hy @ 50 ma
5 Hy @ 500 ma

(CPW) C-N343-63
Manson Labs swinging choke. Hermetically sealed. 17 Hy @ 50 ma, 5 Hy @ 500 ma. 2 kv test. 5-1/2" x 6-1/2" x 4-3/4" high. Used, removed.
$150 each
 
$149 each

Transformer
33 µH @ 260 amps

(CPW) 100F1012-4
Transformer. 33 µH @ 260 amps. 6" diameter core, 8-3/4" c-c bar holes. Copper strap, 0.065" x 1.275". 0.0828", equivalent to 1/0 AWG, 105,500 circular mils. NSN: 5950-01-115-9783.
 

Power Choke
1.65 mH / 40 amps / 2500 wv

(CPW) 61-64036
Regional Mfg. power choke. 1.65 mH, 40 amps, 2500 wv. Measures 4-1/2" x 5-1/4" x 3-3/4"H. Weighs 14 lbs.
$150 each
 
$75 each

Power Reactor
4.4 mH / 70 amps / 1kv Test

(CPW) 312509-1
Power reactor. 4.4 mH @ 70 amps, 1kv test. DC resistance: Too low to measure. Terminal strip connection. 0.118" square copper winding (9 AWG). 6" x 4" x 6" high. Weighs 13.5 lbs. NSN: 5950-01-177-9491.
 

Open Frame Power Choke
10 mH / 13 amps / 0.125 ohms DCR

(CPW) 204679
NJE Corp. open frame power choke. 10 mH, 13 amps, 0.125 ohms DCR. 3-1/4" x 3-3/4" x 4-1/4"H. NSN: 5950-00-941-5538.
$150 each
 
$75 each

Power Choke
11 mH / 50 amps / 2.5 kvw

(CPW) 61-64061
Regional Mfg. special made a handful of these power chokes for Ballantyne. 11 mH, 50 amps, 2.5 kvw. 3/16" square copper wound. 6-1/2" x 11-1/2" x 8" high max dimensions. Weighs 68 lbs. New.
 

"Retard Coil" Power Choke
800 mH / 1.4 amps

(CPW) KS8784
Western Electric "Retard Coil" power choke. 800 mH, 1.4 amps operating current. 4 ohms DCR. Hermetically sealed. 1/4" - 20 corner studs. 6.719" x 5.188" x 6.5"H. Some boxes are packed with January 31st, 1945 NY Times, but most were stored without boxes and have scratches.

Early Western Electric audio amplifier designs from the 20’s, used through the 50’s, implemented the Retard Coil, later known as a plate choke.  In the early days these were low current and very high quality.  This coil is actually made by Western Electric.  Hard-to-find gems like this are harder for us to find. NSN: 5950-00-147-5303.

$250 each
 
$175 each

Reactor
30 Henry / 5 kvdc / 1.3 adc / 3536 vrms

(CPW) GPN482-0038-000
Electro Engineering reactor. Type E16775, 30 - 10 cps. 30 Henry, 5 kvdc, 1.3 adc, 3536 vrms. Auxilliary (5 - 6) terminal winding: 265 vrms @ 0.3 adc. 30 to 10,000 Hz. 11-1/2" x 14" x 17"H. Gates / Harris P/N: 482-0036-000.
 

High Current Choke
925 mH / 1 amp

(CPW) 476-0314
High current choke. 925 mH @ 1 amp. 4-7/8" x 5-1/8" x 4-1/4". Weighs 11 lbs, 4 oz. Gates P/N: 476-0314-000.

$1,450
 
$85 each